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The PF is messing with my head
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Sam Wilson
Mar 17, 2020, 3:52:28 PM3/17/20
to
[Note for Scottish readers: Not that kind of PF]
I have a bike that was fitted with Schwalbe Delta Cruisers from new. I
never had a puncture with them over about 4 years. The rear one wore out -
down to the brown belt under the tread - and I swapped it with a
Specialized Infinity Sport Reflect, which appears to be a similar spec and
half the price of the M+, which I also considered. That was fine for a
while but over the last few months the pressure has started to drop from
about 5 bar to 2 over the course of a week or so, except this week it’s
only down to 3.5 bar. It doesn’t go below 2 bar as far as I can tell.
Recently my front tyre has started going flat overnight though it holds up
fine during the day. I can’t find any kind of puncture in the inner. I
suspect the valve (Presta) which leaks when unscrewed but shows no sign of
air escape when screwed up. I’ve swapped the tube out and we’ll see what
happens.
Suggestions welcome.
Sam
--
The entity formerly known as Sam.W...@ed.ac.uk
Spit the dummy to reply
I have a bike that was fitted with Schwalbe Delta Cruisers from new. I
never had a puncture with them over about 4 years. The rear one wore out -
down to the brown belt under the tread - and I swapped it with a
Specialized Infinity Sport Reflect, which appears to be a similar spec and
half the price of the M+, which I also considered. That was fine for a
while but over the last few months the pressure has started to drop from
about 5 bar to 2 over the course of a week or so, except this week it’s
only down to 3.5 bar. It doesn’t go below 2 bar as far as I can tell.
Recently my front tyre has started going flat overnight though it holds up
fine during the day. I can’t find any kind of puncture in the inner. I
suspect the valve (Presta) which leaks when unscrewed but shows no sign of
air escape when screwed up. I’ve swapped the tube out and we’ll see what
happens.
Suggestions welcome.
Sam
--
The entity formerly known as Sam.W...@ed.ac.uk
Spit the dummy to reply
Nick Maclaren
Mar 17, 2020, 4:00:12 PM3/17/20
to
In article <r4njle$btb$1...@dont-email.me>,
>Recently my front tyre has started going flat overnight though it holds up
>fine during the day. I can't find any kind of puncture in the inner. I
>suspect the valve (Presta) which leaks when unscrewed but shows no sign of
>air escape when screwed up. I've swapped the tube out and we'll see what
>happens.
That's probably the problem. I loathe Presta, and avoid it if at all
possible, and that is one of the many reasons.
Regards,
Nick Maclaren.
Sam Wilson <u...@dummy.wislons.fastmail.co.uk> wrote:
>
>That was fine for a
>while but over the last few months the pressure has started to drop from
>about 5 bar to 2 over the course of a week or so, except this week it's
>only down to 3.5 bar. It doesn't go below 2 bar as far as I can tell.
Ah, the merits of butyl! No more pumping up twice a day :-)
>
>That was fine for a
>while but over the last few months the pressure has started to drop from
>about 5 bar to 2 over the course of a week or so, except this week it's
>only down to 3.5 bar. It doesn't go below 2 bar as far as I can tell.
>Recently my front tyre has started going flat overnight though it holds up
>fine during the day. I can't find any kind of puncture in the inner. I
>suspect the valve (Presta) which leaks when unscrewed but shows no sign of
>air escape when screwed up. I've swapped the tube out and we'll see what
>happens.
possible, and that is one of the many reasons.
Regards,
Nick Maclaren.
Jolly polly
Mar 17, 2020, 7:58:48 PM3/17/20
to
"Sam Wilson" <u...@dummy.wislons.fastmail.co.uk> wrote in message
news:r4njle$btb$1...@dont-email.me...
> [Note for Scottish readers: Not that kind of PF]
>
> I have a bike that was fitted with Schwalbe Delta Cruisers from new. I
> never had a puncture with them over about 4 years. The rear one wore
> out -
> down to the brown belt under the tread - and I swapped it with a
> Specialized Infinity Sport Reflect, which appears to be a similar spec and
> half the price of the M+, which I also considered. That was fine for a
> while but over the last few months the pressure has started to drop from
> about 5 bar to 2 over the course of a week or so, except this week it’s
> only down to 3.5 bar. It doesn’t go below 2 bar as far as I can tell.
>
> Recently my front tyre has started going flat overnight though it holds up
> fine during the day. I can’t find any kind of puncture in the inner. I
> suspect the valve (Presta) which leaks when unscrewed but shows no sign of
> air escape when screwed up. I’ve swapped the tube out and we’ll see what
> happens.
Check to see if it is the removable valve core type
>
> I have a bike that was fitted with Schwalbe Delta Cruisers from new. I
> never had a puncture with them over about 4 years. The rear one wore
> out -
> down to the brown belt under the tread - and I swapped it with a
> Specialized Infinity Sport Reflect, which appears to be a similar spec and
> half the price of the M+, which I also considered. That was fine for a
> while but over the last few months the pressure has started to drop from
> about 5 bar to 2 over the course of a week or so, except this week it’s
> only down to 3.5 bar. It doesn’t go below 2 bar as far as I can tell.
>
> Recently my front tyre has started going flat overnight though it holds up
> fine during the day. I can’t find any kind of puncture in the inner. I
> suspect the valve (Presta) which leaks when unscrewed but shows no sign of
> air escape when screwed up. I’ve swapped the tube out and we’ll see what
> happens.
I suspect it is and its not tightend up enough
so when you unscew the nut, your actually undoing the core
Adam Funk
Mar 18, 2020, 5:15:22 AM3/18/20
to
Tosspot
Mar 18, 2020, 5:59:06 AM3/18/20
to
I have no idea why some people dislike them, I much prefer them to
Schraeder or heaven forbid Woods!
Nick Maclaren
Mar 18, 2020, 6:01:24 AM3/18/20
to
In article <pp49kgx...@news.ducksburg.com>,
It's another artifact of the damn domination by road-racing. Very
narrow tyres were needed for high pressures back in the latex/linen
days, those need narrow rims, and there's no room for anything much
wider. Also, Woods aren't great for those pressures, and I believe
that was true of Schraeder at the time.
And then, of course, the merits of narrow tyres became an Article of
Faith, which is only now being corrected by the light of reason
(despite that having been known for at least 40 years, to my certain
knowledge).
Regards,
Nick Maclaren.
It's another artifact of the damn domination by road-racing. Very
narrow tyres were needed for high pressures back in the latex/linen
days, those need narrow rims, and there's no room for anything much
wider. Also, Woods aren't great for those pressures, and I believe
that was true of Schraeder at the time.
And then, of course, the merits of narrow tyres became an Article of
Faith, which is only now being corrected by the light of reason
(despite that having been known for at least 40 years, to my certain
knowledge).
Regards,
Nick Maclaren.
Nick Maclaren
Mar 18, 2020, 6:45:25 AM3/18/20
to
In article <O7WdnYzPVfhBbezD...@giganews.com>,
It's been explained several times before. They are prone to leaking,
very fiddly, require good finger dexterity and some strength, don't
work with many pumps, are very delicate, and misbehave horribly if
the rod is even slightly bent or they don't like the connector.
People with even minor physical handicaps often find them extremely
hard to use, extremely unreliable, and sometimes completely unusable.
My wife couldn't use them at all, even 20 years ago, and I can't get a
decent (i.e. reliable) lifetime out of them.
Woods is the only one that does not need an effective non-return
valve in the pump, or can be fixed without the use of fiddly tools.
It's the only one my wife can use, and she's not particularly unusual
in that respect. Yes, it used to be a problem back when the seal was
latex, but so were all other valve types. It's not a problem, unless
you have idiots who find it funny to unscrew it.
Regards,
Nick Maclaren.
very fiddly, require good finger dexterity and some strength, don't
work with many pumps, are very delicate, and misbehave horribly if
the rod is even slightly bent or they don't like the connector.
People with even minor physical handicaps often find them extremely
hard to use, extremely unreliable, and sometimes completely unusable.
My wife couldn't use them at all, even 20 years ago, and I can't get a
decent (i.e. reliable) lifetime out of them.
Woods is the only one that does not need an effective non-return
valve in the pump, or can be fixed without the use of fiddly tools.
It's the only one my wife can use, and she's not particularly unusual
in that respect. Yes, it used to be a problem back when the seal was
latex, but so were all other valve types. It's not a problem, unless
you have idiots who find it funny to unscrew it.
Regards,
Nick Maclaren.
Tosspot
Mar 18, 2020, 7:52:22 AM3/18/20
to
On 18/03/2020 11:45, Nick Maclaren wrote:
> In article <O7WdnYzPVfhBbezD...@giganews.com>,
> Tosspot <Frank...@gmail.com> wrote:
>> On 18/03/2020 10:04, Adam Funk wrote:
>>>
>>> Why have Presta valves become so common anyway?
>>
>> Smaller hole in rim, free flow valve.
>>
>> I have no idea why some people dislike them, I much prefer them to
>> Schraeder or heaven forbid Woods!
>
> It's been explained several times before. They are prone to leaking,
> very fiddly, require good finger dexterity and some strength, don't
> work with many pumps, are very delicate, and misbehave horribly if
> the rod is even slightly bent or they don't like the connector.
> People with even minor physical handicaps often find them extremely
> hard to use, extremely unreliable, and sometimes completely unusable.
> My wife couldn't use them at all, even 20 years ago, and I can't get a
> decent (i.e. reliable) lifetime out of them.
All I can say is in 40 years I've never had one leak or break.
> In article <O7WdnYzPVfhBbezD...@giganews.com>,
> Tosspot <Frank...@gmail.com> wrote:
>> On 18/03/2020 10:04, Adam Funk wrote:
>>>
>>> Why have Presta valves become so common anyway?
>>
>> Smaller hole in rim, free flow valve.
>>
>> I have no idea why some people dislike them, I much prefer them to
>> Schraeder or heaven forbid Woods!
>
> It's been explained several times before. They are prone to leaking,
> very fiddly, require good finger dexterity and some strength, don't
> work with many pumps, are very delicate, and misbehave horribly if
> the rod is even slightly bent or they don't like the connector.
> People with even minor physical handicaps often find them extremely
> hard to use, extremely unreliable, and sometimes completely unusable.
> My wife couldn't use them at all, even 20 years ago, and I can't get a
> decent (i.e. reliable) lifetime out of them.
> Woods is the only one that does not need an effective non-return
> valve in the pump, or can be fixed without the use of fiddly tools.
> It's the only one my wife can use, and she's not particularly unusual
> in that respect. Yes, it used to be a problem back when the seal was
> latex, but so were all other valve types. It's not a problem, unless
> you have idiots who find it funny to unscrew it.
just guessing the PSI at about 10 to overcome the valve, so max PSI 75,
call it 85 on the gauge and hope.
[1] Joys of your neighbors knowing you have a track pump.
Nick Maclaren
Mar 18, 2020, 10:16:08 AM3/18/20
to
In article <QKedndbVGsH-lu_D...@giganews.com>,
unless I screwed the nut down, and one did even then. They were not
cheap and nasty ones, either. While I can screw and unscrew that nut,
my wife couldn't, even back then - a LOT of women lose strength after
menopause, and lots of older people have trouble with fiddly things.
And YOU may not have any problem with bending right over or balancing,
but a LOT of people do. All you have to do is jerk that damn rod, and
the valve stops working properly. After I had bent several back, and
replaced a couple of tubes, I thought 'sod this for a lark' and drilled
out for Schraeder/Woods. The point is that there is NO modern field
pump that can be used on those things if the user can't pump while
bending over, or can't hold steady while pumping. Track pumps aren't
a problem.
You don't need to be seriously handicapped to have trouble with that
poxious valve - at a wild guess, half the population would have,
though few of those cycle any longer (unlike up to the 1960s). I have
known people who gave up because they replaced Woods by Presta, and
have advised many others to drill the rims out for Schraeder or Woods
to solve their problems.
>> Woods is the only one that does not need an effective non-return
>> valve in the pump, or can be fixed without the use of fiddly tools.
>> It's the only one my wife can use, and she's not particularly unusual
>> in that respect. Yes, it used to be a problem back when the seal was
>> latex, but so were all other valve types. It's not a problem, unless
>> you have idiots who find it funny to unscrew it.
>
>What do they use now then? I pumped one up yesterday[1] and tbh I was
>just guessing the PSI at about 10 to overcome the valve, so max PSI 75,
>call it 85 on the gauge and hope.
Absolute tyre pressure isn't critical, and you can judge it well enough
simply by feeling the tyre - with moderate experience. That's what we
always used to do, and I have checked it (on Schraeder) against what
the gauge measures. When using a gauge, I tend to allow about 5 psi,
but 10 is close enough, even for lowish-pressure tyres. I wouldn't use
it on seriously high-volume tyres, as Schraeder is by far the best for
those.
Regards,
Nick Maclaren.
Tosspot <Frank...@gmail.com> wrote:
>>>>
>>>> Why have Presta valves become so common anyway?
>>>
>>> Smaller hole in rim, free flow valve.
>>>
>>> I have no idea why some people dislike them, I much prefer them to
>>> Schraeder or heaven forbid Woods!
>>
>> It's been explained several times before. They are prone to leaking,
>> very fiddly, require good finger dexterity and some strength, don't
>> work with many pumps, are very delicate, and misbehave horribly if
>> the rod is even slightly bent or they don't like the connector.
>> People with even minor physical handicaps often find them extremely
>> hard to use, extremely unreliable, and sometimes completely unusable.
>> My wife couldn't use them at all, even 20 years ago, and I can't get a
>> decent (i.e. reliable) lifetime out of them.
>
>All I can say is in 40 years I've never had one leak or break.
Of the half dozen or a bit more ones I have seen, over half leaked
>>>>
>>>> Why have Presta valves become so common anyway?
>>>
>>> Smaller hole in rim, free flow valve.
>>>
>>> I have no idea why some people dislike them, I much prefer them to
>>> Schraeder or heaven forbid Woods!
>>
>> It's been explained several times before. They are prone to leaking,
>> very fiddly, require good finger dexterity and some strength, don't
>> work with many pumps, are very delicate, and misbehave horribly if
>> the rod is even slightly bent or they don't like the connector.
>> People with even minor physical handicaps often find them extremely
>> hard to use, extremely unreliable, and sometimes completely unusable.
>> My wife couldn't use them at all, even 20 years ago, and I can't get a
>> decent (i.e. reliable) lifetime out of them.
>
>All I can say is in 40 years I've never had one leak or break.
unless I screwed the nut down, and one did even then. They were not
cheap and nasty ones, either. While I can screw and unscrew that nut,
my wife couldn't, even back then - a LOT of women lose strength after
menopause, and lots of older people have trouble with fiddly things.
And YOU may not have any problem with bending right over or balancing,
but a LOT of people do. All you have to do is jerk that damn rod, and
the valve stops working properly. After I had bent several back, and
replaced a couple of tubes, I thought 'sod this for a lark' and drilled
out for Schraeder/Woods. The point is that there is NO modern field
pump that can be used on those things if the user can't pump while
bending over, or can't hold steady while pumping. Track pumps aren't
a problem.
You don't need to be seriously handicapped to have trouble with that
poxious valve - at a wild guess, half the population would have,
though few of those cycle any longer (unlike up to the 1960s). I have
known people who gave up because they replaced Woods by Presta, and
have advised many others to drill the rims out for Schraeder or Woods
to solve their problems.
>> Woods is the only one that does not need an effective non-return
>> valve in the pump, or can be fixed without the use of fiddly tools.
>> It's the only one my wife can use, and she's not particularly unusual
>> in that respect. Yes, it used to be a problem back when the seal was
>> latex, but so were all other valve types. It's not a problem, unless
>> you have idiots who find it funny to unscrew it.
>
>What do they use now then? I pumped one up yesterday[1] and tbh I was
>just guessing the PSI at about 10 to overcome the valve, so max PSI 75,
>call it 85 on the gauge and hope.
simply by feeling the tyre - with moderate experience. That's what we
always used to do, and I have checked it (on Schraeder) against what
the gauge measures. When using a gauge, I tend to allow about 5 psi,
but 10 is close enough, even for lowish-pressure tyres. I wouldn't use
it on seriously high-volume tyres, as Schraeder is by far the best for
those.
Regards,
Nick Maclaren.
Zebee Johnstone
Mar 18, 2020, 3:52:41 PM3/18/20
to
In uk.rec.cycling.moderated on Wed, 18 Mar 2020 14:15:59 -0000 (UTC)
bent one. Which doesn't leak any more than the unbent one, say from
100psi to 80 psi in around 2 weeks.
Had one go bad when the bike fell over while still attached to the
pump. I forgive it for that even though I was late to work because I
had to change the tube.
I'm not all that fond but I cope.
I do find that some pumps can't easily overcome the pressure. I have a
Lezyne track pump (cheapest one) that can't do the ones on the 26" wheel,
whereas the Lezyne mini pump carried for emergencies can. So that's
cheap pumps for you! (bought to do the rear wheel on the trike as only
Lezyne's screw on chuck fits)
I have pondered going to schraeder on all. Have to check the rims on
the 'bent as I don't feel like drilling. THe B doesn't need presta
anymore as a larger pump can fit in the current seatpost but then
I'd have to find a schraeder pump that can and new tubes and sod it.
As I say, not fond of them but they are what I have and I personally
have no reason to change.
Zebee
Nick Maclaren <n...@wheeler.UUCP> wrote:
>
> Of the half dozen or a bit more ones I have seen, over half leaked
> unless I screwed the nut down, and one did even then. They were not
> cheap and nasty ones, either. While I can screw and unscrew that nut,
> my wife couldn't, even back then - a LOT of women lose strength after
> menopause, and lots of older people have trouble with fiddly things.
Glad that hasn't happened to me. I can still unscrew mine, even the
>
> Of the half dozen or a bit more ones I have seen, over half leaked
> unless I screwed the nut down, and one did even then. They were not
> cheap and nasty ones, either. While I can screw and unscrew that nut,
> my wife couldn't, even back then - a LOT of women lose strength after
> menopause, and lots of older people have trouble with fiddly things.
bent one. Which doesn't leak any more than the unbent one, say from
100psi to 80 psi in around 2 weeks.
Had one go bad when the bike fell over while still attached to the
pump. I forgive it for that even though I was late to work because I
had to change the tube.
I'm not all that fond but I cope.
I do find that some pumps can't easily overcome the pressure. I have a
Lezyne track pump (cheapest one) that can't do the ones on the 26" wheel,
whereas the Lezyne mini pump carried for emergencies can. So that's
cheap pumps for you! (bought to do the rear wheel on the trike as only
Lezyne's screw on chuck fits)
I have pondered going to schraeder on all. Have to check the rims on
the 'bent as I don't feel like drilling. THe B doesn't need presta
anymore as a larger pump can fit in the current seatpost but then
I'd have to find a schraeder pump that can and new tubes and sod it.
As I say, not fond of them but they are what I have and I personally
have no reason to change.
Zebee
Sam Wilson
Mar 18, 2020, 9:37:28 PM3/18/20
to
I’ve now reseated it and inflated the inner tube and we’ll see whether it
goes down or not. Even previously there was no sign of leakage when I
stuck it in my basin of water.
Thanks for the suggestion, though.
Sam
[1] I’ve never noticed one before
<https://bicycles.stackexchange.com/questions/38573/how-can-i-tell-if-my-presta-valves-have-removable-cores>
Peter Clinch
Mar 18, 2020, 9:37:37 PM3/18/20
to
On 18/03/2020 11:52, Tosspot wrote:
> On 18/03/2020 11:45, Nick Maclaren wrote:
>> In article <O7WdnYzPVfhBbezD...@giganews.com>,
>> Tosspot <Frank...@gmail.com> wrote:
>>> On 18/03/2020 10:04, Adam Funk wrote:
>>>>
>>>> Why have Presta valves become so common anyway?
>>>
>>> Smaller hole in rim, free flow valve.
>>>
>>> I have no idea why some people dislike them, I much prefer them to
>>> Schraeder or heaven forbid Woods!
>>
>> It's been explained several times before. They are prone to leaking,
>> very fiddly, require good finger dexterity and some strength, don't
>> work with many pumps, are very delicate, and misbehave horribly if
>> the rod is even slightly bent or they don't like the connector.
>> People with even minor physical handicaps often find them extremely
>> hard to use, extremely unreliable, and sometimes completely unusable.
>> My wife couldn't use them at all, even 20 years ago, and I can't get a
>> decent (i.e. reliable) lifetime out of them.
>
> All I can say is in 40 years I've never had one leak or break.
I find that in practice different pumps connect either well or badly to
> On 18/03/2020 11:45, Nick Maclaren wrote:
>> In article <O7WdnYzPVfhBbezD...@giganews.com>,
>> Tosspot <Frank...@gmail.com> wrote:
>>> On 18/03/2020 10:04, Adam Funk wrote:
>>>>
>>>> Why have Presta valves become so common anyway?
>>>
>>> Smaller hole in rim, free flow valve.
>>>
>>> I have no idea why some people dislike them, I much prefer them to
>>> Schraeder or heaven forbid Woods!
>>
>> It's been explained several times before. They are prone to leaking,
>> very fiddly, require good finger dexterity and some strength, don't
>> work with many pumps, are very delicate, and misbehave horribly if
>> the rod is even slightly bent or they don't like the connector.
>> People with even minor physical handicaps often find them extremely
>> hard to use, extremely unreliable, and sometimes completely unusable.
>> My wife couldn't use them at all, even 20 years ago, and I can't get a
>> decent (i.e. reliable) lifetime out of them.
>
> All I can say is in 40 years I've never had one leak or break.
whatever. I personally prefer Prestas because I've had fewer faffs with
them over the years, but bottom line is I have Prestas and Schreaders
and both work okay. Various folk have religious objections to one or the
other, and if so then it makes sense to stick to the other, but <shrug>
I /did/ have an issue with a Presta recently: it had held air so well
that I only pumped it up once a blue moon, it had lost its dust cap and
road-salt rendered it very difficult to open. Not really something I'd
put down as a deal-breaker TBH.
>> Woods is the only one that does not need an effective non-return
>> valve in the pump, or can be fixed without the use of fiddly tools.
>> It's the only one my wife can use, and she's not particularly unusual
>> in that respect. Yes, it used to be a problem back when the seal was
>> latex, but so were all other valve types. It's not a problem, unless
>> you have idiots who find it funny to unscrew it.
will fit. I imagine a Dutch online shop would solve either easily
enough. Roos has them on her Gazelle and I have to use the wee pump that
came with the bike to pump them up, but that's a pump limitation, not a
valve issue.
Pete.
--
Peter Clinch Medical Physics IT Officer
NHS Tayside & Univ. of Dundee Ninewells Hospital & Med. School
Tel 44 1382 660111 ext. 33637 Dundee DD1 9SY Scotland UK
net p.j.c...@dundee.ac.uk http://medphys.dundee.ac.uk/~pjclinch/
John Miller
Mar 18, 2020, 9:37:46 PM3/18/20
to
remember having trouble with one in all that time. I buy the cheapest
tubes I can find so have had a mixture of sizes and manufacturers over
the years. I'm now 75 and have no trouble using them. I wouldn't thank
you for Woods or Schrader valves. Each to their own, but none of the
cyclists I know complain about Presta valves.
John M
Nick Maclaren
Mar 19, 2020, 5:18:55 AM3/19/20
to
In article <hdemsb...@mid.individual.net>,
plenty of spare caps, after some experience (with Schraeder) and mud :-)
>The problem with Woods is getting tubes, and getting a track-pump that
>will fit. I imagine a Dutch online shop would solve either easily
>enough. Roos has them on her Gazelle and I have to use the wee pump that
>came with the bike to pump them up, but that's a pump limitation, not a
>valve issue.
The're still fairly widely available in the UK and its online shops,
though I agree getting rarer. I have never had any trouble with track
pumps, because Presta heads usually work on Woods - because of the
latter's design, a poor seal doesn't matter.
Regards,
Nick Maclaren.
Peter Clinch <p.j.c...@dundee.ac.uk> wrote:
>
>I /did/ have an issue with a Presta recently: it had held air so well
>that I only pumped it up once a blue moon, it had lost its dust cap and
>road-salt rendered it very difficult to open. Not really something I'd
>put down as a deal-breaker TBH.
Not for you (or me), but definitely for people like my wife. I keep
>
>I /did/ have an issue with a Presta recently: it had held air so well
>that I only pumped it up once a blue moon, it had lost its dust cap and
>road-salt rendered it very difficult to open. Not really something I'd
>put down as a deal-breaker TBH.
plenty of spare caps, after some experience (with Schraeder) and mud :-)
>The problem with Woods is getting tubes, and getting a track-pump that
>will fit. I imagine a Dutch online shop would solve either easily
>enough. Roos has them on her Gazelle and I have to use the wee pump that
>came with the bike to pump them up, but that's a pump limitation, not a
>valve issue.
though I agree getting rarer. I have never had any trouble with track
pumps, because Presta heads usually work on Woods - because of the
latter's design, a poor seal doesn't matter.
Regards,
Nick Maclaren.
Kim Wall
Mar 19, 2020, 12:20:20 PM3/19/20
to
On 18/03/2020 13:43, Peter Clinch wrote:
> I find that in practice different pumps connect either well or badly to
> whatever. I personally prefer Prestas because I've had fewer faffs with
> them over the years, but bottom line is I have Prestas and Schreaders
> and both work okay. Various folk have religious objections to one or the
> other, and if so then it makes sense to stick to the other, but <shrug>
I've standardised on Presta because I've got a couple of rims that are
> I find that in practice different pumps connect either well or badly to
> whatever. I personally prefer Prestas because I've had fewer faffs with
> them over the years, but bottom line is I have Prestas and Schreaders
> and both work okay. Various folk have religious objections to one or the
> other, and if so then it makes sense to stick to the other, but <shrug>
narrow enough to require it, and any religious tendencies are overridden
by the convenience of not finding myself having to dismantle a pump and
rotate its thinger in the pissing rain.
Agreed that some pumps are better at one than the other. Screw-on
chucks are best avoided with Presta valves IMHO. The Schrader valve
experience can be greatly improved on some rims by using tubes like
Schwalbe's where the valve body is threaded metal with a lock-ring, so
you have something to push the chuck against. Valve caps are essential
on Schrader, but mostly optional on Presta (unless you're going to play
in the mud).
I had a bad batch of Conti tubes some years ago with chronically leaky
Presta valves, but seem to have avoided problems since. The 'valve
failures' I have usually turn out to be intermittently-self-sealing
splits where the valve joins the tube, which isn't actually the valve's
fault.
The hand-strength issue is a good one though. I doubt my partner could
unscrew a Presta valve without resorting to pliers (this is largely
academic, as she can't really work a pump, and isn't currently able to
cycle anyway). Indeed, I've done so myself on a couple of occasions.
Kim.
--
Zebee Johnstone
Mar 19, 2020, 3:26:36 PM3/19/20
to
In uk.rec.cycling.moderated on Thu, 19 Mar 2020 16:11:34 +0000
something that happens in a cold country where you can get some icing
of the valve?
I think I've once had one that was a bit stiff but never one I
couldn't undo with a bit of effort.
Guess I've got that to look forward to?
Zebee
Kim Wall <k...@ductilebiscuit.net> wrote:
>
> The hand-strength issue is a good one though. I doubt my partner could
> unscrew a Presta valve without resorting to pliers (this is largely
> academic, as she can't really work a pump, and isn't currently able to
> cycle anyway). Indeed, I've done so myself on a couple of occasions.
I find this fascinating as I've never had the problem. Is it maybe
>
> The hand-strength issue is a good one though. I doubt my partner could
> unscrew a Presta valve without resorting to pliers (this is largely
> academic, as she can't really work a pump, and isn't currently able to
> cycle anyway). Indeed, I've done so myself on a couple of occasions.
something that happens in a cold country where you can get some icing
of the valve?
I think I've once had one that was a bit stiff but never one I
couldn't undo with a bit of effort.
Guess I've got that to look forward to?
Zebee
Nick Maclaren
Mar 19, 2020, 4:11:13 PM3/19/20
to
In article <slrnr77hr2...@gmail.com>,
I have had serious problems with many fiddly items for that reason.
There is also the corrosion problem, and things can seize up remarkably
fast after being exposed to salt (and fairly fast due to just humidity).
>I think I've once had one that was a bit stiff but never one I
>couldn't undo with a bit of effort.
>
>Guess I've got that to look forward to?
Not necessarily. People vary a lot with how fast and how much they
lose strength (as well as how much they have initially), and menopause
affects different women in different ways. It's common, but nowhere
near universal.
Regards,
Nick Maclaren.
Zebee Johnstone <zeb...@gmail.com> wrote:
>In uk.rec.cycling.moderated on Thu, 19 Mar 2020 16:11:34 +0000
>Kim Wall <k...@ductilebiscuit.net> wrote:
>>
>> The hand-strength issue is a good one though. I doubt my partner could
>> unscrew a Presta valve without resorting to pliers (this is largely
>> academic, as she can't really work a pump, and isn't currently able to
>> cycle anyway). Indeed, I've done so myself on a couple of occasions.
>
>I find this fascinating as I've never had the problem. Is it maybe
>something that happens in a cold country where you can get some icing
>of the valve?
More because cold also reduces finger strength, feeling and dexterity.
>In uk.rec.cycling.moderated on Thu, 19 Mar 2020 16:11:34 +0000
>Kim Wall <k...@ductilebiscuit.net> wrote:
>>
>> The hand-strength issue is a good one though. I doubt my partner could
>> unscrew a Presta valve without resorting to pliers (this is largely
>> academic, as she can't really work a pump, and isn't currently able to
>> cycle anyway). Indeed, I've done so myself on a couple of occasions.
>
>I find this fascinating as I've never had the problem. Is it maybe
>something that happens in a cold country where you can get some icing
>of the valve?
I have had serious problems with many fiddly items for that reason.
There is also the corrosion problem, and things can seize up remarkably
fast after being exposed to salt (and fairly fast due to just humidity).
>I think I've once had one that was a bit stiff but never one I
>couldn't undo with a bit of effort.
>
>Guess I've got that to look forward to?
lose strength (as well as how much they have initially), and menopause
affects different women in different ways. It's common, but nowhere
near universal.
Regards,
Nick Maclaren.
Kim Wall
Mar 19, 2020, 4:20:17 PM3/19/20
to
On 19/03/2020 19:26, Zebee Johnstone wrote:
> In uk.rec.cycling.moderated on Thu, 19 Mar 2020 16:11:34 +0000
> Kim Wall <k...@ductilebiscuit.net> wrote:
>>
>> The hand-strength issue is a good one though. I doubt my partner could
>> unscrew a Presta valve without resorting to pliers (this is largely
>> academic, as she can't really work a pump, and isn't currently able to
>> cycle anyway). Indeed, I've done so myself on a couple of occasions.
>
> I find this fascinating as I've never had the problem. Is it maybe
> something that happens in a cold country where you can get some icing
> of the valve?
IME it's more about icing (not literally) of the fingers than the valve.
> In uk.rec.cycling.moderated on Thu, 19 Mar 2020 16:11:34 +0000
> Kim Wall <k...@ductilebiscuit.net> wrote:
>>
>> The hand-strength issue is a good one though. I doubt my partner could
>> unscrew a Presta valve without resorting to pliers (this is largely
>> academic, as she can't really work a pump, and isn't currently able to
>> cycle anyway). Indeed, I've done so myself on a couple of occasions.
>
> I find this fascinating as I've never had the problem. Is it maybe
> something that happens in a cold country where you can get some icing
> of the valve?
Fiddly stuff becomes much more difficult with cold hands (I suppose in
part because you get pain rather than useful tacticle feedback), and my
circulation isn't brilliant.
(My partner's issue comes from being born without thumbs: Her pincer
grip is impressive by the standards of the surgery that made it
possible, but well below normal for a woman her age. She's generally
inclined to reach for a tool or get someone else to do the monkey-work
rather than waste time struggling with things.)
Kim.
--
Tosspot
Mar 20, 2020, 5:59:09 AM3/20/20
to
have a recalcitrant one that was caked in salt and slime. That just
made me buy a job lot of dust caps :-)
Tbf, the big advantage of Schraeder is of course the roadside garage,
but I have a presta-schraeder adaptor living in my handlebars for that.
With a piece of blu-tac to stop the rattle, 'cos I don't need anymore
rattles!
Kim Wall
Mar 20, 2020, 8:20:17 AM3/20/20
to
On 20/03/2020 09:58, Tosspot wrote:
> Tbf, the big advantage of Schraeder is of course the roadside garage,
> but I have a presta-schraeder adaptor living in my handlebars for that.
Good point (also muggle bike pumps tend to be set to Schrader). I have
> Tbf, the big advantage of Schraeder is of course the roadside garage,
> but I have a presta-schraeder adaptor living in my handlebars for that.
those in the small objects box of my tool kits (along with other things
with an extremely high save-your-day to size/weight ratio, like chain
quick links, spare cleat bolts and so on).
I know someone who uses them (presumably in combination with a Schrader
valve cap) as valve caps.
Kim.
--
Nick Maclaren
Mar 20, 2020, 9:59:41 AM3/20/20
to
In article <RtqdneZYxaVHDunD...@giganews.com>,
usually leaked. The trouble there was (a) my firmly is too hard for
my wife and (b) a week or two of high humidity often changed the
firmly into hard! Yes, I could handle that aspect, especially since
I carry a small pair of pliers when touring, but many people can't.
It was the combination of their fragility and the fuck-awful field
pumps that was the killer for me, not that aspect.
Regards,
Nick Maclaren.
Tosspot <Frank...@gmail.com> wrote:
>
>They don't need to be screwed up tight to start with, otoh, I did once
>have a recalcitrant one that was caked in salt and slime. That just
>made me buy a job lot of dust caps :-)
I found that, unless I screwed them up firmly, they shook loose and
>
>They don't need to be screwed up tight to start with, otoh, I did once
>have a recalcitrant one that was caked in salt and slime. That just
>made me buy a job lot of dust caps :-)
usually leaked. The trouble there was (a) my firmly is too hard for
my wife and (b) a week or two of high humidity often changed the
firmly into hard! Yes, I could handle that aspect, especially since
I carry a small pair of pliers when touring, but many people can't.
It was the combination of their fragility and the fuck-awful field
pumps that was the killer for me, not that aspect.
Regards,
Nick Maclaren.
Sam Wilson
Mar 21, 2020, 7:38:22 AM3/21/20
to
Sam Wilson <u...@dummy.wislons.fastmail.co.uk> wrote:
now is whether I stick it back on the wheel, inflate it to full pressure
and then see what happens, or whether I just put it back in the bag,
knowing it’s good enough for emergencies... :-)
Sam
> Jolly polly <knee...@aton.com> wrote:
>>
>> Check to see if it is the removable valve core type
>> I suspect it is and its not tightend up enough
>> so when you unscew the nut, your actually undoing the core
>
> It is the removable core type[1] but the core didn’t seem to be loose.
> I’ve now reseated it and inflated the inner tube and we’ll see whether it
> goes down or not. Even previously there was no sign of leakage when I
> stuck it in my basin of water.
The inflated inner tube has not appreciably leaked overnight. The question
>>
>> Check to see if it is the removable valve core type
>> I suspect it is and its not tightend up enough
>> so when you unscew the nut, your actually undoing the core
>
> It is the removable core type[1] but the core didn’t seem to be loose.
> I’ve now reseated it and inflated the inner tube and we’ll see whether it
> goes down or not. Even previously there was no sign of leakage when I
> stuck it in my basin of water.
now is whether I stick it back on the wheel, inflate it to full pressure
and then see what happens, or whether I just put it back in the bag,
knowing it’s good enough for emergencies... :-)
Sam
Sam Wilson
Mar 21, 2020, 7:38:28 AM3/21/20
to
problem undoing a Presta valve (I may be imagining having to unscrew one
with pliers when I was a teenager). I prefer them to the alternatives.
With both the pumps I normally use, a track and a short frame pump, each of
which has a flip-over clamp, the Presta is much easier to get a good seal
on than the Schaders on my partner’s bike.
I haven’t seen a Woods valve in years, though there’s still a length of
valve rubber in the old puncture kit in my drawer.
Peter Clinch
Mar 21, 2020, 7:38:37 AM3/21/20
to
On 18/03/2020 14:15, Nick Maclaren wrote:
> And YOU may not have any problem with bending right over or balancing,
> but a LOT of people do. All you have to do is jerk that damn rod, and
> the valve stops working properly. After I had bent several back, and
> replaced a couple of tubes, I thought 'sod this for a lark' and drilled
> out for Schraeder/Woods. The point is that there is NO modern field
> pump that can be used on those things if the user can't pump while
> bending over, or can't hold steady while pumping. Track pumps aren't
> a problem.
I find no discernible difference in the difficulties attaching any given
> And YOU may not have any problem with bending right over or balancing,
> but a LOT of people do. All you have to do is jerk that damn rod, and
> the valve stops working properly. After I had bent several back, and
> replaced a couple of tubes, I thought 'sod this for a lark' and drilled
> out for Schraeder/Woods. The point is that there is NO modern field
> pump that can be used on those things if the user can't pump while
> bending over, or can't hold steady while pumping. Track pumps aren't
> a problem.
pump to any of the main 3 valve systems (put head over tube, lever to
lock), and no difference in using the pump once it is attached.
Thinks like the Topeak Road Morph are IME much easier to use then
typical hand pumps, and the short hose also provides useful mechanical
isolation which makes pumping easier than the more typical direct
connections. It's not as easy to use as a proper track pump, but much
easier than most hand pumps. There's a fold-out foot that you stand on
and then drive the pump against the ground, like a track pump but smaller.
Mine (a Bontrager) switches between Schraders and Prestas by unscrewing
the end and inverting a couple of things, bit of a faff but in practice
you just have it set for whatever you use. According to Topeak's web
site the Road Morph G will also do "Dunlop valves", which AIUI are Woods.
David Lawrence
Mar 21, 2020, 7:38:45 AM3/21/20
to
On 17/03/2020 20:00, Nick Maclaren wrote:
>
> That's probably the problem. I loathe Presta, and avoid it if at all
> possible, and that is one of the many reasons.
>
I am not keen on Presta valves either, but the very cheap, screw on
>
> That's probably the problem. I loathe Presta, and avoid it if at all
> possible, and that is one of the many reasons.
>
Schraeder to Presta adapters solve a lot of my problems. I have a few of
those lying about now, so there is always one in any place I look for it. ;)
Adam Funk
Mar 21, 2020, 8:00:16 AM3/21/20
to
points.
Jolly polly
Mar 21, 2020, 10:34:04 AM3/21/20
to
news:r4vdbg$l96$1...@dont-email.me...
If it were me, I'd pop it back in. You would then know for sure you've found
and fixed the fault after a week or so
and fixed the fault after a week or so
Nick Maclaren
Mar 21, 2020, 2:35:42 PM3/21/20
to
In article <hdgoi5...@mid.individual.net>,
over? As I said, this is a problem for a large number of people who
have various minor handicaps, often due simply to old age.
I am not joking that I have known people who cycled for decades, and
gave up when they were moved to Presta or were thinking of doing so.
>Thinks like the Topeak Road Morph are IME much easier to use then
>typical hand pumps, and the short hose also provides useful mechanical
>isolation which makes pumping easier than the more typical direct
>connections. It's not as easy to use as a proper track pump, but much
>easier than most hand pumps. There's a fold-out foot that you stand on
>and then drive the pump against the ground, like a track pump but smaller.
Yeah. Sodding EVIL. I need 3 stable points to hold position precisely
when performing physical activity (e.g. pumping) or to be able to rock
around on my feet (and move by body as needed) to maintain balance. If
I put my foot on it, that foot ceases to be adequate for balancing. And
when (WHEN not IF) I lose balance, I will fall further than that stupid
little hose allows before I can recover. I use an almost identical one
from another maker, but (a) have fallen completely over several times
trying to protect the valve (NOT a good idea for people with even
osteopaenia, let alone osteoporosis, but I don't have them) and (b) it's
Schraeder valves, which are VASTLY more robust against being jerked.
Balance as bad as mine is rare in younger people, but gets increasingly
common in the elderly, and is the norm for people in their 90s. Over
60-70 years, I have learnt to live with it, but it gets my goat when
people tell me that there isn't a problem because THEY don't have it.
Regards,
Nick Maclaren.
Peter Clinch <p.j.c...@dundee.ac.uk> wrote:
>
>> And YOU may not have any problem with bending right over or balancing,
>> but a LOT of people do. All you have to do is jerk that damn rod, and
>> the valve stops working properly. After I had bent several back, and
>> replaced a couple of tubes, I thought 'sod this for a lark' and drilled
>> out for Schraeder/Woods. The point is that there is NO modern field
>> pump that can be used on those things if the user can't pump while
>> bending over, or can't hold steady while pumping. Track pumps aren't
>> a problem.
>
>I find no discernible difference in the difficulties attaching any given
>pump to any of the main 3 valve systems (put head over tube, lever to
>lock), and no difference in using the pump once it is attached.
And how difficult do YOU find it to pump and balance while bending
>
>> And YOU may not have any problem with bending right over or balancing,
>> but a LOT of people do. All you have to do is jerk that damn rod, and
>> the valve stops working properly. After I had bent several back, and
>> replaced a couple of tubes, I thought 'sod this for a lark' and drilled
>> out for Schraeder/Woods. The point is that there is NO modern field
>> pump that can be used on those things if the user can't pump while
>> bending over, or can't hold steady while pumping. Track pumps aren't
>> a problem.
>
>I find no discernible difference in the difficulties attaching any given
>pump to any of the main 3 valve systems (put head over tube, lever to
>lock), and no difference in using the pump once it is attached.
over? As I said, this is a problem for a large number of people who
have various minor handicaps, often due simply to old age.
I am not joking that I have known people who cycled for decades, and
gave up when they were moved to Presta or were thinking of doing so.
>Thinks like the Topeak Road Morph are IME much easier to use then
>typical hand pumps, and the short hose also provides useful mechanical
>isolation which makes pumping easier than the more typical direct
>connections. It's not as easy to use as a proper track pump, but much
>easier than most hand pumps. There's a fold-out foot that you stand on
>and then drive the pump against the ground, like a track pump but smaller.
when performing physical activity (e.g. pumping) or to be able to rock
around on my feet (and move by body as needed) to maintain balance. If
I put my foot on it, that foot ceases to be adequate for balancing. And
when (WHEN not IF) I lose balance, I will fall further than that stupid
little hose allows before I can recover. I use an almost identical one
from another maker, but (a) have fallen completely over several times
trying to protect the valve (NOT a good idea for people with even
osteopaenia, let alone osteoporosis, but I don't have them) and (b) it's
Schraeder valves, which are VASTLY more robust against being jerked.
Balance as bad as mine is rare in younger people, but gets increasingly
common in the elderly, and is the norm for people in their 90s. Over
60-70 years, I have learnt to live with it, but it gets my goat when
people tell me that there isn't a problem because THEY don't have it.
Regards,
Nick Maclaren.
Tosspot
Mar 21, 2020, 3:14:20 PM3/21/20
to
Dimensions in *droves*. Best to put it in the bag and wait until they
get bored and turn their attention to inflatable beach toys. Usually
takes 2-3 weeks.
Zebee Johnstone
Mar 21, 2020, 5:11:18 PM3/21/20
to
In uk.rec.cycling.moderated on Thu, 19 Mar 2020 08:24:42 +0000
than the other hose type mini pumps. It has a very long hose and can
be used as an old fashioned hold in both hands pump if you want, the
long hose meaning you can stand in the same position as if you had the
old style hose pump. I don't bother: I'm short enough that using it
as a floor pump works fine!
Screw chucks aren't for all and I've had it stick on a trike tyre and
need a pair of pliers but that was just the once and it may have been
some kind of user error.
Zebee
Peter Clinch <p.j.c...@dundee.ac.uk> wrote:
> Thinks like the Topeak Road Morph are IME much easier to use then
> typical hand pumps, and the short hose also provides useful mechanical
> isolation which makes pumping easier than the more typical direct
> connections. It's not as easy to use as a proper track pump, but much
> easier than most hand pumps. There's a fold-out foot that you stand on
> and then drive the pump against the ground, like a track pump but smaller.
My on road pump is now a Lezyne Micro Floor. A big bigger and heavier
> Thinks like the Topeak Road Morph are IME much easier to use then
> typical hand pumps, and the short hose also provides useful mechanical
> isolation which makes pumping easier than the more typical direct
> connections. It's not as easy to use as a proper track pump, but much
> easier than most hand pumps. There's a fold-out foot that you stand on
> and then drive the pump against the ground, like a track pump but smaller.
than the other hose type mini pumps. It has a very long hose and can
be used as an old fashioned hold in both hands pump if you want, the
long hose meaning you can stand in the same position as if you had the
old style hose pump. I don't bother: I'm short enough that using it
as a floor pump works fine!
Screw chucks aren't for all and I've had it stick on a trike tyre and
need a pair of pliers but that was just the once and it may have been
some kind of user error.
Zebee
Sam Wilson
Mar 21, 2020, 9:58:55 PM3/21/20
to
On the other it would mean washing my hands again and currently that’s a
slightly painful business - my knuckles have gone dry and cracked from the
current health emergency response.
Roger Merriman
Mar 21, 2020, 10:33:43 PM3/21/20
to
Nick Maclaren <n...@wheeler.UUCP> wrote:
> In article <hdgoi5...@mid.individual.net>,
> Peter Clinch <p.j.c...@dundee.ac.uk> wrote:
>>
>>> And YOU may not have any problem with bending right over or balancing,
>>> but a LOT of people do. All you have to do is jerk that damn rod, and
>>> the valve stops working properly. After I had bent several back, and
>>> replaced a couple of tubes, I thought 'sod this for a lark' and drilled
>>> out for Schraeder/Woods. The point is that there is NO modern field
>>> pump that can be used on those things if the user can't pump while
>>> bending over, or can't hold steady while pumping. Track pumps aren't
>>> a problem.
>>
>> I find no discernible difference in the difficulties attaching any given
>> pump to any of the main 3 valve systems (put head over tube, lever to
>> lock), and no difference in using the pump once it is attached.
>
> And how difficult do YOU find it to pump and balance while bending
> over? As I said, this is a problem for a large number of people who
> have various minor handicaps, often due simply to old age.
I do not unsurprisingly due to damaged vestibular system, be that car or
> In article <hdgoi5...@mid.individual.net>,
> Peter Clinch <p.j.c...@dundee.ac.uk> wrote:
>>
>>> And YOU may not have any problem with bending right over or balancing,
>>> but a LOT of people do. All you have to do is jerk that damn rod, and
>>> the valve stops working properly. After I had bent several back, and
>>> replaced a couple of tubes, I thought 'sod this for a lark' and drilled
>>> out for Schraeder/Woods. The point is that there is NO modern field
>>> pump that can be used on those things if the user can't pump while
>>> bending over, or can't hold steady while pumping. Track pumps aren't
>>> a problem.
>>
>> I find no discernible difference in the difficulties attaching any given
>> pump to any of the main 3 valve systems (put head over tube, lever to
>> lock), and no difference in using the pump once it is attached.
>
> And how difficult do YOU find it to pump and balance while bending
> over? As I said, this is a problem for a large number of people who
> have various minor handicaps, often due simply to old age.
bike, but attaching the pump lead to the valve is reasonably easy yes
Presta valves can be more fiddly to open, but hardly a deal breaker. It’s
the pumping that’s awkward not the valve as such.
I can’t reliably stand and pump unless it’s a track/foot pump, so I end up
Sitting/kneeling I also can’t crouch though I still occasionally try and
unceremoniously topple...
>
> I am not joking that I have known people who cycled for decades, and
> gave up when they were moved to Presta or were thinking of doing so.
>
>> Thinks like the Topeak Road Morph are IME much easier to use then
>> typical hand pumps, and the short hose also provides useful mechanical
>> isolation which makes pumping easier than the more typical direct
>> connections. It's not as easy to use as a proper track pump, but much
>> easier than most hand pumps. There's a fold-out foot that you stand on
>> and then drive the pump against the ground, like a track pump but smaller.
>
> Yeah. Sodding EVIL. I need 3 stable points to hold position precisely
> when performing physical activity (e.g. pumping) or to be able to rock
> around on my feet (and move by body as needed) to maintain balance. If
> I put my foot on it, that foot ceases to be adequate for balancing. And
> when (WHEN not IF) I lose balance, I will fall further than that stupid
> little hose allows before I can recover. I use an almost identical one
> from another maker, but (a) have fallen completely over several times
> trying to protect the valve (NOT a good idea for people with even
> osteopaenia, let alone osteoporosis, but I don't have them) and (b) it's
> Schraeder valves, which are VASTLY more robust against being jerked.
>
> Balance as bad as mine is rare in younger people, but gets increasingly
> common in the elderly, and is the norm for people in their 90s. Over
> 60-70 years, I have learnt to live with it, but it gets my goat when
> people tell me that there isn't a problem because THEY don't have it.
>
liable to rip the valve clean off, fall, Put my head though the wheel...
Track/foot pump that’s fine but for hand pumps I need to kneel, I equally
hated the road morph was neither fish or fowl. So I got a big frame pump
for the odd occasions I wanted a big pump but couldn’t take a frame pump,
generally taking a bike abroad. For all other uses I use the Topeak Race
Rocket MT ie a mini pump with a hose, and a decent throw, since my bikes go
from 35mm to 60mm+ so high pressures aren’t needed, but volume is.
>
> Regards,
> Nick Maclaren.
>
Roger Merriman
Nick Maclaren
Mar 22, 2020, 5:17:33 AM3/22/20
to
In article <r56ipo$uqq$1...@dont-email.me>,
because I lost a lot of their functionality shortly after learning to
walk and talk, so I was at the optimal time to adapt and have had a
lifetime to do so! I even managed to learn to parallel ski at 64,
but it took me 5 times as long as most people and I was the slowest
parallel skier on the slopes :-)
I often kneel or lie down, too, but that's serious unpleasant in many
circumstances, and I don't find holding position when kneeling is at
all easy.
I will take a look at that pump (and the Lezyne). Thanks.
Regards,
Nick Maclaren.
Roger Merriman <ro...@sarlet.com> wrote:
>>
>I'm impressed your attempting to stand, I can't for mini/frame pumps I'm
>liable to rip the valve clean off, fall, Put my head though the wheel...
>Track/foot pump that's fine but for hand pumps I need to kneel, I equally
>hated the road morph was neither fish or fowl. So I got a big frame pump
>for the odd occasions I wanted a big pump but couldn't take a frame pump,
>generally taking a bike abroad. For all other uses I use the Topeak Race
>Rocket MT ie a mini pump with a hose, and a decent throw, since my bikes go
>from 35mm to 60mm+ so high pressures aren't needed, but volume is.
Yes, but I was lucky with my loss of hearing and vestibular function,
>>
>I'm impressed your attempting to stand, I can't for mini/frame pumps I'm
>liable to rip the valve clean off, fall, Put my head though the wheel...
>Track/foot pump that's fine but for hand pumps I need to kneel, I equally
>hated the road morph was neither fish or fowl. So I got a big frame pump
>for the odd occasions I wanted a big pump but couldn't take a frame pump,
>generally taking a bike abroad. For all other uses I use the Topeak Race
>Rocket MT ie a mini pump with a hose, and a decent throw, since my bikes go
>from 35mm to 60mm+ so high pressures aren't needed, but volume is.
because I lost a lot of their functionality shortly after learning to
walk and talk, so I was at the optimal time to adapt and have had a
lifetime to do so! I even managed to learn to parallel ski at 64,
but it took me 5 times as long as most people and I was the slowest
parallel skier on the slopes :-)
I often kneel or lie down, too, but that's serious unpleasant in many
circumstances, and I don't find holding position when kneeling is at
all easy.
I will take a look at that pump (and the Lezyne). Thanks.
Regards,
Nick Maclaren.
Roger Merriman
Mar 22, 2020, 8:39:01 AM3/22/20
to
ability to compensate goes.
For myself I always had very good balance growing up in the hills, so as
long as there light it’s generally okay crowds and public transport aren’t
great, one of the reasons I commute by bike, I also saw the vestibular
physios who though did weird sh*t to me, has helped.
Roger Merriman
Nick Maclaren
Mar 22, 2020, 10:10:22 AM3/22/20
to
In article <r57m8s$sv7$1...@dont-email.me>,
slow to train at the best of times. 150 hours for my skiing.
>For myself I always had very good balance growing up in the hills, so as
>long as there light it's generally okay crowds and public transport aren't
>great, one of the reasons I commute by bike, I also saw the vestibular
>physios who though did weird sh*t to me, has helped.
I rely primarily on touch and proprioreception, not sight - but,
whatever method you use, it's a matter of "use it or lose it". I saw
some specialists, and it turns out have no physical function in one
side, and don't even track with my eyes (the primary function of the
vestibular system). I predict, and was making very rude remarks about
the author of the pseudrorandom number generator used in the test by
the end (which happens to be a speciality of mine). But, because of
what I rely on, I am VERY sensitive to being bumped into (especially
on a bicycle), which is why I had to give up when they 'improved' the
route into my work and forced cyclists onto a dangerously narrow
psychle farcility.
Regards,
Nick Maclaren.
Roger Merriman <ro...@sarlet.com> wrote:
>
>Young brains learn/cope well, though looking at others as you age the
>ability to compensate goes.
Yes. It's primarily an unconscious (reflex) matter, and that is very
>
>Young brains learn/cope well, though looking at others as you age the
>ability to compensate goes.
slow to train at the best of times. 150 hours for my skiing.
>For myself I always had very good balance growing up in the hills, so as
>long as there light it's generally okay crowds and public transport aren't
>great, one of the reasons I commute by bike, I also saw the vestibular
>physios who though did weird sh*t to me, has helped.
whatever method you use, it's a matter of "use it or lose it". I saw
some specialists, and it turns out have no physical function in one
side, and don't even track with my eyes (the primary function of the
vestibular system). I predict, and was making very rude remarks about
the author of the pseudrorandom number generator used in the test by
the end (which happens to be a speciality of mine). But, because of
what I rely on, I am VERY sensitive to being bumped into (especially
on a bicycle), which is why I had to give up when they 'improved' the
route into my work and forced cyclists onto a dangerously narrow
psychle farcility.
Regards,
Nick Maclaren.
Roger Merriman
Mar 22, 2020, 11:52:27 AM3/22/20
to
Nick Maclaren <n...@wheeler.UUCP> wrote:
> In article <r57m8s$sv7$1...@dont-email.me>,
> Roger Merriman <ro...@sarlet.com> wrote:
>>
>> Young brains learn/cope well, though looking at others as you age the
>> ability to compensate goes.
>
> Yes. It's primarily an unconscious (reflex) matter, and that is very
> slow to train at the best of times. 150 hours for my skiing.
I’ve not attempted to learn any thing new, I was fairly slow to pick up the
> In article <r57m8s$sv7$1...@dont-email.me>,
> Roger Merriman <ro...@sarlet.com> wrote:
>>
>> Young brains learn/cope well, though looking at others as you age the
>> ability to compensate goes.
>
> Yes. It's primarily an unconscious (reflex) matter, and that is very
> slow to train at the best of times. 150 hours for my skiing.
physio movements I think.
>
>> For myself I always had very good balance growing up in the hills, so as
>> long as there light it's generally okay crowds and public transport aren't
>> great, one of the reasons I commute by bike, I also saw the vestibular
>> physios who though did weird sh*t to me, has helped.
>
> I rely primarily on touch and proprioreception, not sight - but,
> whatever method you use, it's a matter of "use it or lose it". I saw
> some specialists, and it turns out have no physical function in one
> side, and don't even track with my eyes (the primary function of the
> vestibular system). I predict, and was making very rude remarks about
> the author of the pseudrorandom number generator used in the test by
> the end (which happens to be a speciality of mine). But, because of
> what I rely on, I am VERY sensitive to being bumped into (especially
> on a bicycle), which is why I had to give up when they 'improved' the
> route into my work and forced cyclists onto a dangerously narrow
> psychle farcility.
>
I have minimal on one side, which they tested with various tests, generally
>> For myself I always had very good balance growing up in the hills, so as
>> long as there light it's generally okay crowds and public transport aren't
>> great, one of the reasons I commute by bike, I also saw the vestibular
>> physios who though did weird sh*t to me, has helped.
>
> I rely primarily on touch and proprioreception, not sight - but,
> whatever method you use, it's a matter of "use it or lose it". I saw
> some specialists, and it turns out have no physical function in one
> side, and don't even track with my eyes (the primary function of the
> vestibular system). I predict, and was making very rude remarks about
> the author of the pseudrorandom number generator used in the test by
> the end (which happens to be a speciality of mine). But, because of
> what I rely on, I am VERY sensitive to being bumped into (especially
> on a bicycle), which is why I had to give up when they 'improved' the
> route into my work and forced cyclists onto a dangerously narrow
> psychle farcility.
>
involved having ones head shaken by some young physio, or attempting to
focus and track on her finger while she invaded my personal space, and
stared into my eyes which wasn’t at all uncomfortable! In fairness it has
improved my brain has learnt to compensate.
No numbers mainly being pulled around by physio and such.
On foot being knocked or people passing behind etc such as in crowds I
struggle with, in the early days I couldn’t cope with holding hands in low
light as i couldn’t work out what was or wasn’t moving. I can’t cope with
things like discos for that reason and need to be careful with things like
cinema as it’s so dark my systems can’t cope.
On the bike it’s as before, i do though need to use lights with good wide
beams, and had a few ooh sh*t if you pass under bridges on a bright day
which can momentarily knock my systems off line.
Hence to a extent the bike is transport/aid
Sam Wilson
Mar 23, 2020, 9:55:42 AM3/23/20
to
Sam Wilson <u...@dummy.wislons.fastmail.co.uk> wrote:
> [Note for Scottish readers: Not that kind of PF]
>
> I have a bike that was fitted with Schwalbe Delta Cruisers from new. I
> never had a puncture with them over about 4 years. The rear one wore out -
> down to the brown belt under the tread - and I swapped it with a
> Specialized Infinity Sport Reflect, which appears to be a similar spec and
> half the price of the M+, which I also considered. That was fine for a
> while but over the last few months the pressure has started to drop from
> about 5 bar to 2 over the course of a week or so, except this week it’s
> only down to 3.5 bar. It doesn’t go below 2 bar as far as I can tell.
PF doing what s/he/they do best:
- Monday, pump up rear tyre from 3.5 to 5 bar, go for leisurely ride;
- Friday, pump up rear tyre from 3.5 to 5 bar, go for leisurely ride
(maintaining social distance);
- Saturday, pump up rear tyre from 3.5 to 5 bar, go for leisurely ride with
friends (maintaining social distance except when crossing the Slateford
aqueduct and passing other people on the towpath at less than 2 m
separation);
- Monday, 10 minutes before doctor’s appointment 5 minutes ride away (it’s
OK, they’re triaging and I’m asymptomatic) rear tyre is completely flat -
pump up to 5 bar and it’s down to 4 bar 30 minutes later when I get home.
I’m going to have to do something about that one.
> [Note for Scottish readers: Not that kind of PF]
>
> I have a bike that was fitted with Schwalbe Delta Cruisers from new. I
> never had a puncture with them over about 4 years. The rear one wore out -
> down to the brown belt under the tread - and I swapped it with a
> Specialized Infinity Sport Reflect, which appears to be a similar spec and
> half the price of the M+, which I also considered. That was fine for a
> while but over the last few months the pressure has started to drop from
> about 5 bar to 2 over the course of a week or so, except this week it’s
> only down to 3.5 bar. It doesn’t go below 2 bar as far as I can tell.
PF doing what s/he/they do best:
- Monday, pump up rear tyre from 3.5 to 5 bar, go for leisurely ride;
- Friday, pump up rear tyre from 3.5 to 5 bar, go for leisurely ride
(maintaining social distance);
- Saturday, pump up rear tyre from 3.5 to 5 bar, go for leisurely ride with
friends (maintaining social distance except when crossing the Slateford
aqueduct and passing other people on the towpath at less than 2 m
separation);
- Monday, 10 minutes before doctor’s appointment 5 minutes ride away (it’s
OK, they’re triaging and I’m asymptomatic) rear tyre is completely flat -
pump up to 5 bar and it’s down to 4 bar 30 minutes later when I get home.
I’m going to have to do something about that one.
David Damerell
Mar 23, 2020, 10:06:37 AM3/23/20
to
Quoting Peter Clinch <p.j.c...@dundee.ac.uk>:
>I find no discernible difference in the difficulties attaching any given
>pump to any of the main 3 valve systems (put head over tube, lever to
>lock), and no difference in using the pump once it is attached.
I would much rather use Schraeder-with-lockring than Presta, especially
>I find no discernible difference in the difficulties attaching any given
>pump to any of the main 3 valve systems (put head over tube, lever to
>lock), and no difference in using the pump once it is attached.
with cold hands.
--
David Damerell <dame...@chiark.greenend.org.uk>
If we aren't perfectly synchronised this corncob will explode!
Today is Second Leicesterday, March.
Tomorrow will be Second Brieday, March.
David Damerell
Mar 23, 2020, 10:06:38 AM3/23/20
to
Quoting John Miller <millerhous...@talktalk.net>:
>I've been using Presta valves for the last 50 years or so and can only
>remember having trouble with one in all that time.
I've bent the threaded shaft on them. I don't have serious trouble with
them, but given a free choice, I'd have Schraeder - and I can definitely
see Schraeder would be much better for people with wonky hands.
Tomorrow will be Second Gloucesterday, March.
>I've been using Presta valves for the last 50 years or so and can only
>remember having trouble with one in all that time.
I've bent the threaded shaft on them. I don't have serious trouble with
them, but given a free choice, I'd have Schraeder - and I can definitely
see Schraeder would be much better for people with wonky hands.
--
David Damerell <dame...@chiark.greenend.org.uk>
If we aren't perfectly synchronised this corncob will explode!
Today is Gorgonzoladay, March - a weekend.
David Damerell <dame...@chiark.greenend.org.uk>
If we aren't perfectly synchronised this corncob will explode!
Tomorrow will be Second Gloucesterday, March.
Peter Clinch
Mar 24, 2020, 12:29:11 PM3/24/20
to
On 21/03/2020 18:35, Nick Maclaren wrote:
> In article <hdgoi5...@mid.individual.net>,
> Peter Clinch <p.j.c...@dundee.ac.uk> wrote:
>>
>>> And YOU may not have any problem with bending right over or balancing,
>>> but a LOT of people do. All you have to do is jerk that damn rod, and
>>> the valve stops working properly. After I had bent several back, and
>>> replaced a couple of tubes, I thought 'sod this for a lark' and drilled
>>> out for Schraeder/Woods. The point is that there is NO modern field
>>> pump that can be used on those things if the user can't pump while
>>> bending over, or can't hold steady while pumping. Track pumps aren't
>>> a problem.
>>
>> I find no discernible difference in the difficulties attaching any given
>> pump to any of the main 3 valve systems (put head over tube, lever to
>> lock), and no difference in using the pump once it is attached.
>
> And how difficult do YOU find it to pump and balance while bending
> over? As I said, this is a problem for a large number of people who
> have various minor handicaps, often due simply to old age.
The key point here is not how difficult I find it, but that there is no
> In article <hdgoi5...@mid.individual.net>,
> Peter Clinch <p.j.c...@dundee.ac.uk> wrote:
>>
>>> And YOU may not have any problem with bending right over or balancing,
>>> but a LOT of people do. All you have to do is jerk that damn rod, and
>>> the valve stops working properly. After I had bent several back, and
>>> replaced a couple of tubes, I thought 'sod this for a lark' and drilled
>>> out for Schraeder/Woods. The point is that there is NO modern field
>>> pump that can be used on those things if the user can't pump while
>>> bending over, or can't hold steady while pumping. Track pumps aren't
>>> a problem.
>>
>> I find no discernible difference in the difficulties attaching any given
>> pump to any of the main 3 valve systems (put head over tube, lever to
>> lock), and no difference in using the pump once it is attached.
>
> And how difficult do YOU find it to pump and balance while bending
> over? As I said, this is a problem for a large number of people who
> have various minor handicaps, often due simply to old age.
discerbible difference in difficulty between Prestas and Schraeders. In
other words, if I can do one, I can do the other, and if I can't do one
I'd be just as snookered with the other.
>> Thinks like the Topeak Road Morph are IME much easier to use then
>> typical hand pumps, and the short hose also provides useful mechanical
>> isolation which makes pumping easier than the more typical direct
>> connections. It's not as easy to use as a proper track pump, but much
>> easier than most hand pumps. There's a fold-out foot that you stand on
>> and then drive the pump against the ground, like a track pump but smaller.
>
> Yeah. Sodding EVIL. I need 3 stable points to hold position precisely
> when performing physical activity (e.g. pumping) or to be able to rock
> around on my feet (and move by body as needed) to maintain balance. If
> I put my foot on it, that foot ceases to be adequate for balancing. And
> when (WHEN not IF) I lose balance, I will fall further than that stupid
> little hose allows before I can recover.
stood and bent over? On the 'bent trike you could actually do the front
wheels sat in the chair.
Nick Maclaren
Mar 24, 2020, 2:43:19 PM3/24/20
to
In article <hdull8...@mid.individual.net>,
is like for people with dire balance like Roger Merriman and me, or with
breathing or back problems that make it hard to pump while bent over
(of which which I have the former). The answer appears to be that you
don't, and aren't prepared to listen to those of us who do.
>Why not just sit or kneel in front of the wheel instead of doing it
>stood and bent over? On the 'bent trike you could actually do the front
>wheels sat in the chair.
Because, on most surfaces, that does not count as 3 stable points; yes,
it's a bit better, but holding yourself in position while kneeling on
rough tarmac, gravel etc. is DAMN HARD, and it's none too easy even on
paving slabs, plus it requires tensing your inner core for the whole
time you are pumping, which is a good way to injure yourself. Sitting
is more comfortable, but requires even harder work from your inner
core. You really do NOT understand how much extra stress on the inner
core is needed to hold position with no vestibular function.
And, as far as sitting on the seat, the stupid little hose on the Topeak
ISN'T LONG ENOUGH unless I bend until my chest touches my legs - and I
can't breath effectively enough to pump in that position (as many people
can't) - some can't do that for other reasons, too. Perching on the
edge is no damn good, either, because it isn't stable enough.
Look, I have tried ALL of those 'solutions' and NONE OF THEM WORK.
My handicaps are mild enough that I can actually pump in most of them
but (a) it takes AGES because of the need to take breaks, (b) I risk
injuring myself (yes, I have done so) and (c) I am STILL risking the
valve, because they all have high 'topple rates'.
I am getting the Lezyne valve than zeebee suggested, and will see how
much the extra hose length helps. I have got the version without a
gauge, because several reviews damned the gauge to hell, but the pen
gauges used for car tyres are cheap, small, easy to use and accurate.
And, as you may notice, available only for Schraeder.
Regards,
Nick Maclaren.
Peter Clinch <p.j.c...@dundee.ac.uk> wrote:
>
>The key point here is not how difficult I find it, but that there is no
>discerbible difference in difficulty between Prestas and Schraeders. In
>other words, if I can do one, I can do the other, and if I can't do one
>I'd be just as snookered with the other.
No, the key is whether you have even the glimmering of a clue what it
>
>The key point here is not how difficult I find it, but that there is no
>discerbible difference in difficulty between Prestas and Schraeders. In
>other words, if I can do one, I can do the other, and if I can't do one
>I'd be just as snookered with the other.
is like for people with dire balance like Roger Merriman and me, or with
breathing or back problems that make it hard to pump while bent over
(of which which I have the former). The answer appears to be that you
don't, and aren't prepared to listen to those of us who do.
>Why not just sit or kneel in front of the wheel instead of doing it
>stood and bent over? On the 'bent trike you could actually do the front
>wheels sat in the chair.
it's a bit better, but holding yourself in position while kneeling on
rough tarmac, gravel etc. is DAMN HARD, and it's none too easy even on
paving slabs, plus it requires tensing your inner core for the whole
time you are pumping, which is a good way to injure yourself. Sitting
is more comfortable, but requires even harder work from your inner
core. You really do NOT understand how much extra stress on the inner
core is needed to hold position with no vestibular function.
And, as far as sitting on the seat, the stupid little hose on the Topeak
ISN'T LONG ENOUGH unless I bend until my chest touches my legs - and I
can't breath effectively enough to pump in that position (as many people
can't) - some can't do that for other reasons, too. Perching on the
edge is no damn good, either, because it isn't stable enough.
Look, I have tried ALL of those 'solutions' and NONE OF THEM WORK.
My handicaps are mild enough that I can actually pump in most of them
but (a) it takes AGES because of the need to take breaks, (b) I risk
injuring myself (yes, I have done so) and (c) I am STILL risking the
valve, because they all have high 'topple rates'.
I am getting the Lezyne valve than zeebee suggested, and will see how
much the extra hose length helps. I have got the version without a
gauge, because several reviews damned the gauge to hell, but the pen
gauges used for car tyres are cheap, small, easy to use and accurate.
And, as you may notice, available only for Schraeder.
Regards,
Nick Maclaren.
Sam Wilson
Mar 24, 2020, 9:21:49 PM3/24/20
to
Nick Maclaren <n...@wheeler.UUCP> wrote:
>
> I am getting the Lezyne valve than zeebee suggested, and will see how
> much the extra hose length helps. I have got the version without a
> gauge, because several reviews damned the gauge to hell, but the pen
> gauges used for car tyres are cheap, small, easy to use and accurate.
> And, as you may notice, available only for Schraeder.
Or for Presta fitted with a Schrader[1] adaptor? I don’t know, but since
>
> I am getting the Lezyne valve than zeebee suggested, and will see how
> much the extra hose length helps. I have got the version without a
> gauge, because several reviews damned the gauge to hell, but the pen
> gauges used for car tyres are cheap, small, easy to use and accurate.
> And, as you may notice, available only for Schraeder.
the adapters have been mentioned upthread then it seems worth
investigating.
Sam
[1] The online references all seem to say “Schrader” rather than
“Schraeder” or “Schräder”.
Tosspot
Mar 25, 2020, 3:49:20 AM3/25/20
to
On 24/03/2020 20:27, Sam Wilson wrote:
> Nick Maclaren <n...@wheeler.UUCP> wrote:
>>
>> I am getting the Lezyne valve than zeebee suggested, and will see how
>> much the extra hose length helps. I have got the version without a
>> gauge, because several reviews damned the gauge to hell, but the pen
>> gauges used for car tyres are cheap, small, easy to use and accurate.
>> And, as you may notice, available only for Schraeder.
>
> Or for Presta fitted with a Schrader[1] adaptor? I don’t know, but since
> the adapters have been mentioned upthread then it seems worth
> investigating.
No the pressure gauges push the pin down in a schraeder valve, put and
> Nick Maclaren <n...@wheeler.UUCP> wrote:
>>
>> I am getting the Lezyne valve than zeebee suggested, and will see how
>> much the extra hose length helps. I have got the version without a
>> gauge, because several reviews damned the gauge to hell, but the pen
>> gauges used for car tyres are cheap, small, easy to use and accurate.
>> And, as you may notice, available only for Schraeder.
>
> Or for Presta fitted with a Schrader[1] adaptor? I don’t know, but since
> the adapters have been mentioned upthread then it seems worth
> investigating.
adapter on and it won't work. But since garages have pressure gauges
for me it's a mute point.
Schrader was a German immigrant and in German it would be spelt
Schraeder or with an omelette. Likely in this case with the omelette
and due to early 19th tech it was simply left out. So, you are correct,
for the valve it should be Schrader :-)
Nick Maclaren
Mar 25, 2020, 6:46:55 AM3/25/20
to
In article <r5dmv0$t08$1...@dont-email.me>,
first place and (2) drilling out for Woods/Schrader. When I finally
got sick of the horrors, I did (2) and now do (1).
To Tosspot: thanks. I originally saw it spelled with an umlaut on
several German sites, and assumed that was the correct spelling,
because a LOT of German words are misspelled on English-speaking sites
by simply dropping the umlaut.
Regards,
Nick Maclaren.
Sam Wilson <u...@dummy.wislons.fastmail.co.uk> wrote:
>
>Or for Presta fitted with a Schrader[1] adaptor? I don’t know, but since
>the adapters have been mentioned upthread then it seems worth
>investigating.
That would be a third possibility after (1) not buying Presta in the
>
>Or for Presta fitted with a Schrader[1] adaptor? I don’t know, but since
>the adapters have been mentioned upthread then it seems worth
>investigating.
first place and (2) drilling out for Woods/Schrader. When I finally
got sick of the horrors, I did (2) and now do (1).
To Tosspot: thanks. I originally saw it spelled with an umlaut on
several German sites, and assumed that was the correct spelling,
because a LOT of German words are misspelled on English-speaking sites
by simply dropping the umlaut.
Regards,
Nick Maclaren.
Sam Wilson
Mar 25, 2020, 3:48:27 PM3/25/20
to
Tosspot <Frank...@gmail.com> wrote:
> On 24/03/2020 20:27, Sam Wilson wrote:
>> Nick Maclaren <n...@wheeler.UUCP> wrote:
>>>
>>> I am getting the Lezyne valve than zeebee suggested, and will see how
>>> much the extra hose length helps. I have got the version without a
>>> gauge, because several reviews damned the gauge to hell, but the pen
>>> gauges used for car tyres are cheap, small, easy to use and accurate.
>>> And, as you may notice, available only for Schraeder.
>>
>> Or for Presta fitted with a Schrader[1] adaptor? I don’t know, but since
>> the adapters have been mentioned upthread then it seems worth
>> investigating.
>
> No the pressure gauges push the pin down in a schraeder valve, put and
> adapter on and it won't work. But since garages have pressure gauges
> for me it's a mute point.
So the adaptor doesn’t link the Presta and Schrader pins? Similarly it
> On 24/03/2020 20:27, Sam Wilson wrote:
>> Nick Maclaren <n...@wheeler.UUCP> wrote:
>>>
>>> I am getting the Lezyne valve than zeebee suggested, and will see how
>>> much the extra hose length helps. I have got the version without a
>>> gauge, because several reviews damned the gauge to hell, but the pen
>>> gauges used for car tyres are cheap, small, easy to use and accurate.
>>> And, as you may notice, available only for Schraeder.
>>
>> Or for Presta fitted with a Schrader[1] adaptor? I don’t know, but since
>> the adapters have been mentioned upthread then it seems worth
>> investigating.
>
> No the pressure gauges push the pin down in a schraeder valve, put and
> adapter on and it won't work. But since garages have pressure gauges
> for me it's a mute point.
relies on pressure from the pump to overcome the Presta valve rather than
pressing the Presta or Schrader pin in like most pumps? Interesting...
> Schrader was a German immigrant and in German it would be spelt
> Schraeder or with an omelette. Likely in this case with the omelette
> and due to early 19th tech it was simply left out. So, you are correct,
> for the valve it should be Schrader :-)
>
>> Sam
>>
>> [1] The online references all seem to say “Schrader” rather than
>> “Schraeder” or “Schräder”.
rather assumed that. I’m also assuming that Americans would pronounce
Schrader pretty much how a German speaker would pronounce Schräder, rather
than how such a speaker would pronounce Schrader!
Sam
Tosspot
Mar 25, 2020, 4:01:57 PM3/25/20
to
On 25/03/2020 11:44, Sam Wilson wrote:
> Tosspot <Frank...@gmail.com> wrote:
>> On 24/03/2020 20:27, Sam Wilson wrote:
>>> Nick Maclaren <n...@wheeler.UUCP> wrote:
>>>>
>>>> I am getting the Lezyne valve than zeebee suggested, and will
>>>> see how much the extra hose length helps. I have got the
>>>> version without a gauge, because several reviews damned the
>>>> gauge to hell, but the pen gauges used for car tyres are cheap,
>>>> small, easy to use and accurate. And, as you may notice,
>>>> available only for Schraeder.
>>>
>>> Or for Presta fitted with a Schrader[1] adaptor? I don’t know,
>>> but since the adapters have been mentioned upthread then it seems
>>> worth investigating.
>>
>> No the pressure gauges push the pin down in a schraeder valve, put
>> and adapter on and it won't work. But since garages have pressure
>> gauges for me it's a mute point.
>
> So the adaptor doesn’t link the Presta and Schrader pins? Similarly
> it relies on pressure from the pump to overcome the Presta valve
> rather than pressing the Presta or Schrader pin in like most pumps?
> Interesting...
Exactly. I guess you'd need a free floating needle that the pin on the
> Tosspot <Frank...@gmail.com> wrote:
>> On 24/03/2020 20:27, Sam Wilson wrote:
>>> Nick Maclaren <n...@wheeler.UUCP> wrote:
>>>>
>>>> I am getting the Lezyne valve than zeebee suggested, and will
>>>> see how much the extra hose length helps. I have got the
>>>> version without a gauge, because several reviews damned the
>>>> gauge to hell, but the pen gauges used for car tyres are cheap,
>>>> small, easy to use and accurate. And, as you may notice,
>>>> available only for Schraeder.
>>>
>>> Or for Presta fitted with a Schrader[1] adaptor? I don’t know,
>>> but since the adapters have been mentioned upthread then it seems
>>> worth investigating.
>>
>> No the pressure gauges push the pin down in a schraeder valve, put
>> and adapter on and it won't work. But since garages have pressure
>> gauges for me it's a mute point.
>
> So the adaptor doesn’t link the Presta and Schrader pins? Similarly
> it relies on pressure from the pump to overcome the Presta valve
> rather than pressing the Presta or Schrader pin in like most pumps?
> Interesting...
pump head could engage with and that's just too much faff for a get you
home solution. It's is a bit like pumpinh up annold woods style valve.
>> Schrader was a German immigrant and in German it would be spelt
>> Schraeder or with an omelette. Likely in this case with the
>> omelette and due to early 19th tech it was simply left out. So,
>> you are correct, for the valve it should be Schrader :-)
>>
>>> Sam
>>>
>>> [1] The online references all seem to say “Schrader” rather than
>>> “Schraeder” or “Schräder”.
>
> Not knowing enough German to know if Schrader was a possible German
> name I rather assumed that. I’m also assuming that Americans would
> pronounce Schrader pretty much how a German speaker would pronounce
> Schräder, rather than how such a speaker would pronounce Schrader!
Sam Wilson
Apr 1, 2020, 1:25:01 PM4/1/20
to
confirm that that inner also had a removable core. I took the inner out,
checked for leaks (tested negative), took the valve core out, gave it a
good coat of looking at and reassembled the whole thing. A week later the
tyre is still fully inflated.
Good call, Polly, thank you - looks like the PF had suborned my valves.
Tosspot
Apr 1, 2020, 3:37:17 PM4/1/20
to
Jaimie Vandenbergh
Apr 2, 2020, 7:18:12 AM4/2/20
to
On 16 Mar 2020 at 11:16:14 GMT, "Sam Wilson"
It's taken me two weeks of mildly wondering, but... is it Puncture Fairy?
Cheers - Jaimie
--
"If you can't make fun of it, it's probably not worth taking seriously"
-- http://survivingtheworld.net/Lesson494.html
It's taken me two weeks of mildly wondering, but... is it Puncture Fairy?
Cheers - Jaimie
--
"If you can't make fun of it, it's probably not worth taking seriously"
-- http://survivingtheworld.net/Lesson494.html
Roger Merriman
Apr 2, 2020, 1:09:24 PM4/2/20
to
Jaimie Vandenbergh <jai...@usually.sessile.org> wrote:
> On 16 Mar 2020 at 11:16:14 GMT, "Sam Wilson"
> <u...@dummy.wislons.fastmail.co.uk> wrote:
>
>> [Note for Scottish readers: Not that kind of PF]
>
> It's taken me two weeks of mildly wondering, but... is it Puncture Fairy?
>
> Cheers - Jaimie
It would be, she even used to have a Twitter account!
> On 16 Mar 2020 at 11:16:14 GMT, "Sam Wilson"
> <u...@dummy.wislons.fastmail.co.uk> wrote:
>
>> [Note for Scottish readers: Not that kind of PF]
>
> It's taken me two weeks of mildly wondering, but... is it Puncture Fairy?
>
> Cheers - Jaimie
Roger Merriman
Nick Maclaren
Apr 2, 2020, 2:02:43 PM4/2/20
to
In article <r6567q$afa$1...@dont-email.me>,
Scotland!
Regards,
Nick Maclaren.
Roger Merriman <ro...@sarlet.com> wrote:
>Jaimie Vandenbergh <jai...@usually.sessile.org> wrote:
>> On 16 Mar 2020 at 11:16:14 GMT, "Sam Wilson"
>> <u...@dummy.wislons.fastmail.co.uk> wrote:
>>
>>> [Note for Scottish readers: Not that kind of PF]
>>
>> It's taken me two weeks of mildly wondering, but... is it Puncture Fairy?
>
>Jaimie Vandenbergh <jai...@usually.sessile.org> wrote:
>> On 16 Mar 2020 at 11:16:14 GMT, "Sam Wilson"
>> <u...@dummy.wislons.fastmail.co.uk> wrote:
>>
>>> [Note for Scottish readers: Not that kind of PF]
>>
>> It's taken me two weeks of mildly wondering, but... is it Puncture Fairy?
>
>It would be, she even used to have a Twitter account!
Yes, but what I want to know is what the other kind of PF is in
Scotland!
Regards,
Nick Maclaren.
Sam Wilson
Apr 2, 2020, 9:03:07 PM4/2/20
to
Nick Maclaren
Apr 3, 2020, 7:01:58 AM4/3/20
to
In article <r65ic0$2tt$1...@dont-email.me>,
Regards,
Nick Maclaren.
Sam Wilson <u...@dummy.wislons.fastmail.co.uk> wrote:
>>
>> Yes, but what I want to know is what the other kind of PF is in
>> Scotland!
>
>Procurator Fiscal. Another entity you want to keep on the right side of.
Silly of me! Thanks. At least the two offices are separate :-)
>>
>> Yes, but what I want to know is what the other kind of PF is in
>> Scotland!
>
>Procurator Fiscal. Another entity you want to keep on the right side of.
Regards,
Nick Maclaren.
Jaimie Vandenbergh
Apr 3, 2020, 11:50:24 PM4/3/20
to
asking that question!
I've just pumped up the road bike to full for the first time since last
spring. Rather concerned that the aging Marathons might be approaching
spontaneous disassembly age, but they look pretty rubbery still, no cracks.
Fingers crossed.
Cheers - Jaimie
--
"It has been said that man is a rational animal. All my life I have been
searching for evidence which could support this" -- Bertrand Russell
Roger Merriman
Apr 4, 2020, 9:47:06 AM4/4/20
to
Jaimie Vandenbergh <jai...@usually.sessile.org> wrote:
> On 3 Apr 2020 at 12:01:47 BST, "Nick Maclaren" <Nick Maclaren> wrote:
>
>> In article <r65ic0$2tt$1...@dont-email.me>,
>> Sam Wilson <u...@dummy.wislons.fastmail.co.uk> wrote:
>>>>
>>>> Yes, but what I want to know is what the other kind of PF is in
>>>> Scotland!
>>>
>>> Procurator Fiscal. Another entity you want to keep on the right side of.
>>
>> Silly of me! Thanks. At least the two offices are separate :-)
>
> I hadn't even got as far as wondering about the Scottish PF, so thank you for
> asking that question!
>
> I've just pumped up the road bike to full for the first time since last
> spring. Rather concerned that the aging Marathons might be approaching
> spontaneous disassembly age, but they look pretty rubbery still, no cracks.
> Fingers crossed.
I always understood it that for most part cracking was cosmetic than
> On 3 Apr 2020 at 12:01:47 BST, "Nick Maclaren" <Nick Maclaren> wrote:
>
>> In article <r65ic0$2tt$1...@dont-email.me>,
>> Sam Wilson <u...@dummy.wislons.fastmail.co.uk> wrote:
>>>>
>>>> Yes, but what I want to know is what the other kind of PF is in
>>>> Scotland!
>>>
>>> Procurator Fiscal. Another entity you want to keep on the right side of.
>>
>> Silly of me! Thanks. At least the two offices are separate :-)
>
> I hadn't even got as far as wondering about the Scottish PF, so thank you for
> asking that question!
>
> I've just pumped up the road bike to full for the first time since last
> spring. Rather concerned that the aging Marathons might be approaching
> spontaneous disassembly age, but they look pretty rubbery still, no cracks.
> Fingers crossed.
structural, ie in the rubber rather than in the carcass.
Though I believe that earlier Marathons could be prone to this,
particularly if under inflated I seem to recall reading one Schwalbe note,
probably when I was looking at options before choosing Big Apples to
replace the Marathon Plus Touring.
>
> Cheers - Jaimie
Roger Merriman
Nick Maclaren
Apr 4, 2020, 10:18:22 AM4/4/20
to
In article <r6a349$52v$1...@dont-email.me>,
it's structural. Remember that it's like fibreglass - once the
binding fails, the tyre stops being a composite structure, and the
fabric will start to separate and even tear.
>Though I believe that earlier Marathons could be prone to this,
>particularly if under inflated I seem to recall reading one Schwalbe note,
>probably when I was looking at options before choosing Big Apples to
>replace the Marathon Plus Touring.
Yes, they were. You had to underinflate them quite a lot, but many
people did.
Regards,
Nick Maclaren.
>> I've just pumped up the road bike to full for the first time since last
>> spring. Rather concerned that the aging Marathons might be approaching
>> spontaneous disassembly age, but they look pretty rubbery still, no cracks.
>> Fingers crossed.
>
>I always understood it that for most part cracking was cosmetic than
>structural, ie in the rubber rather than in the carcass.
Surface cracking is cosmetic, yes, but when it reaches the carcase,
>> spring. Rather concerned that the aging Marathons might be approaching
>> spontaneous disassembly age, but they look pretty rubbery still, no cracks.
>> Fingers crossed.
>
>I always understood it that for most part cracking was cosmetic than
>structural, ie in the rubber rather than in the carcass.
it's structural. Remember that it's like fibreglass - once the
binding fails, the tyre stops being a composite structure, and the
fabric will start to separate and even tear.
>Though I believe that earlier Marathons could be prone to this,
>particularly if under inflated I seem to recall reading one Schwalbe note,
>probably when I was looking at options before choosing Big Apples to
>replace the Marathon Plus Touring.
people did.
Regards,
Nick Maclaren.
Roger Merriman
Apr 4, 2020, 7:01:31 PM4/4/20
to
Nick Maclaren <n...@wheeler.UUCP> wrote:
> In article <r6a349$52v$1...@dont-email.me>,
> Roger Merriman <ro...@sarlet.com> wrote:
>> Jaimie Vandenbergh <jai...@usually.sessile.org> wrote:
>>>
>>> I've just pumped up the road bike to full for the first time since last
>>> spring. Rather concerned that the aging Marathons might be approaching
>>> spontaneous disassembly age, but they look pretty rubbery still, no cracks.
>>> Fingers crossed.
>>
>> I always understood it that for most part cracking was cosmetic than
>> structural, ie in the rubber rather than in the carcass.
>
> Surface cracking is cosmetic, yes, but when it reaches the carcase,
> it's structural. Remember that it's like fibreglass - once the
> binding fails, the tyre stops being a composite structure, and the
> fabric will start to separate and even tear.
I’ve generally replaced marathons types when the war wounds get too much!
> In article <r6a349$52v$1...@dont-email.me>,
> Roger Merriman <ro...@sarlet.com> wrote:
>> Jaimie Vandenbergh <jai...@usually.sessile.org> wrote:
>>>
>>> I've just pumped up the road bike to full for the first time since last
>>> spring. Rather concerned that the aging Marathons might be approaching
>>> spontaneous disassembly age, but they look pretty rubbery still, no cracks.
>>> Fingers crossed.
>>
>> I always understood it that for most part cracking was cosmetic than
>> structural, ie in the rubber rather than in the carcass.
>
> Surface cracking is cosmetic, yes, but when it reaches the carcase,
> it's structural. Remember that it's like fibreglass - once the
> binding fails, the tyre stops being a composite structure, and the
> fabric will start to separate and even tear.
Oddly the Big Apples are picking up gravel shards though seems to be coping
with glass. Which did for the Marathons or rather got to the point I felt
some of the wounds where too big!
The only tyres I can remember cracking was some very cheap tyres that where
fitting new to the bike, which I’d been meaning to replace any way.
>
>> Though I believe that earlier Marathons could be prone to this,
>> particularly if under inflated I seem to recall reading one Schwalbe note,
>> probably when I was looking at options before choosing Big Apples to
>> replace the Marathon Plus Touring.
>
> Yes, they were. You had to underinflate them quite a lot, but many
> people did.
>
Yup I used to run them quite low on my Road Single Speed also gave them
>> Though I believe that earlier Marathons could be prone to this,
>> particularly if under inflated I seem to recall reading one Schwalbe note,
>> probably when I was looking at options before choosing Big Apples to
>> replace the Marathon Plus Touring.
>
> Yes, they were. You had to underinflate them quite a lot, but many
> people did.
>
grip, would of been 25mm, I’m on the lower limit on the 26x2in commute bike
but doesn’t seem to cause any premature wear.
Nick Maclaren
Apr 5, 2020, 5:16:36 AM4/5/20
to
In article <r6b3js$27g$1...@dont-email.me>,
saw cracked were all run far too often at below 25 PSI (sometimes
below 15) for 622x37. That also causes the tyre to move on braking,
which twists and writes off the tube!
I am interested what they are resistant against. My Big Ben Pluses
on the trike are rather prone to (needle-like) thorn punctures; my
Marthon Pluses seem immune to that, because of the thickness of the
tread and protective band. I never had much problem from glass,
possibly because I can't ride safely near the gutter and on the local
psychle farcilities, anyway.
Regards,
Nick Maclaren.
Roger Merriman <ro...@sarlet.com> wrote:
>>
>> Surface cracking is cosmetic, yes, but when it reaches the carcase,
>> it's structural. Remember that it's like fibreglass - once the
>> binding fails, the tyre stops being a composite structure, and the
>> fabric will start to separate and even tear.
>
>I've generally replaced marathons types when the war wounds get too much!
>Oddly the Big Apples are picking up gravel shards though seems to be coping
>with glass. Which did for the Marathons or rather got to the point I felt
>some of the wounds where too big!
>
>The only tyres I can remember cracking was some very cheap tyres that where
>fitting new to the bike, which I'd been meaning to replace any way.
Yes, those are most of the ones I have seen crack. The Marathons I
>>
>> Surface cracking is cosmetic, yes, but when it reaches the carcase,
>> it's structural. Remember that it's like fibreglass - once the
>> binding fails, the tyre stops being a composite structure, and the
>> fabric will start to separate and even tear.
>
>I've generally replaced marathons types when the war wounds get too much!
>Oddly the Big Apples are picking up gravel shards though seems to be coping
>with glass. Which did for the Marathons or rather got to the point I felt
>some of the wounds where too big!
>
>The only tyres I can remember cracking was some very cheap tyres that where
>fitting new to the bike, which I'd been meaning to replace any way.
saw cracked were all run far too often at below 25 PSI (sometimes
below 15) for 622x37. That also causes the tyre to move on braking,
which twists and writes off the tube!
I am interested what they are resistant against. My Big Ben Pluses
on the trike are rather prone to (needle-like) thorn punctures; my
Marthon Pluses seem immune to that, because of the thickness of the
tread and protective band. I never had much problem from glass,
possibly because I can't ride safely near the gutter and on the local
psychle farcilities, anyway.
Regards,
Nick Maclaren.
Roger Merriman
Apr 5, 2020, 6:30:03 AM4/5/20
to
segregated cycleway but due to the area tends to have a liberal spread of
glass.
The Big Apples are picking up small wounds from wet gravel shards, but
surface wounds only, I pick out the shards. Glass slashed I’ve not found
any yet at least to the extent that the Marathon Plus Touring did, but I am
slightly more careful with the Big Apples, glass seems only to do slashing
rather than stabbing wounds hence me moving to the Big Apples, ie why haul
all that weight and wooden ride?
Talking of stabbing, what I found did puncture though only just was the
Hawthorn which had just enough length to penetrate the Marathon plus
Touring.
In short for my uses, the Marathon plus Touring was overkill.
Roger Merriman
Kim Wall
Apr 5, 2020, 9:00:31 AM4/5/20
to
On 05/04/2020 00:01, Roger Merriman wrote:
> Nick Maclaren <n...@wheeler.UUCP> wrote:
>> In article <r6a349$52v$1...@dont-email.me>,
>> Roger Merriman <ro...@sarlet.com> wrote:
>>> I always understood it that for most part cracking was cosmetic than
>>> structural, ie in the rubber rather than in the carcass.
>>
>> Surface cracking is cosmetic, yes, but when it reaches the carcase,
>> it's structural. Remember that it's like fibreglass - once the
>> binding fails, the tyre stops being a composite structure, and the
>> fabric will start to separate and even tear.
>
> I’ve generally replaced marathons types when the war wounds get too much!
Indeed. In the absence of catastrophic damage, I've found they
> Nick Maclaren <n...@wheeler.UUCP> wrote:
>> In article <r6a349$52v$1...@dont-email.me>,
>> Roger Merriman <ro...@sarlet.com> wrote:
>>> I always understood it that for most part cracking was cosmetic than
>>> structural, ie in the rubber rather than in the carcass.
>>
>> Surface cracking is cosmetic, yes, but when it reaches the carcase,
>> it's structural. Remember that it's like fibreglass - once the
>> binding fails, the tyre stops being a composite structure, and the
>> fabric will start to separate and even tear.
>
> I’ve generally replaced marathons types when the war wounds get too much!
eventually get to a point where they start getting regular punctures,
rather than generally not getting punctures. There's usually a fair
amount of tread left, and no obvious signs of falling apart.
Kim.
--
Roger Merriman
Apr 5, 2020, 5:39:33 PM4/5/20
to
well with the Big Apples, it’s what seems to happen to road tyres often.
but the plus bit keeps working it’s just that over the 7/8k of Miles it’s
picked up enough slashes that gets to the point I’m uncomfortable using
them any more.
Roger Merriman
Zebee Johnstone
Apr 5, 2020, 6:12:27 PM4/5/20
to
In uk.rec.cycling.moderated on Sun, 5 Apr 2020 21:39:14 -0000 (UTC)
Roger Merriman <ro...@sarlet.com> wrote:
without getting punctures.
I suspect I'm riding on better swept roads...
The Conti Contact Speeds have held up very well on the trike so far but
mostly local where there aren't many horrors. Some glass but looks like
the NSW drink container deposit scheme is working: the glass I'm seeing
now is windscreen glass not bottle glass so lumps not sharp bits.
I noticed that when I lived in Adelaide which had a bottle refund schem
for years: you just don't get broken bottles on the road there.
Zebee
Roger Merriman <ro...@sarlet.com> wrote:
> Kim Wall <k...@ductilebiscuit.net> wrote:
>>
>> Indeed. In the absence of catastrophic damage, I've found they
>> eventually get to a point where they start getting regular punctures,
>> rather than generally not getting punctures. There's usually a fair
>> amount of tread left, and no obvious signs of falling apart.
>
>>
>> Indeed. In the absence of catastrophic damage, I've found they
>> eventually get to a point where they start getting regular punctures,
>> rather than generally not getting punctures. There's usually a fair
>> amount of tread left, and no obvious signs of falling apart.
>
> With the Marathon plus/Touring that doesn’t seem to have happened might
> well with the Big Apples, it’s what seems to happen to road tyres often.
> but the plus bit keeps working it’s just that over the 7/8k of Miles it’s
> picked up enough slashes that gets to the point I’m uncomfortable using
> them any more.
THe ones on the 2 wheel 'bent so far have worn the tread to the belt
> well with the Big Apples, it’s what seems to happen to road tyres often.
> but the plus bit keeps working it’s just that over the 7/8k of Miles it’s
> picked up enough slashes that gets to the point I’m uncomfortable using
> them any more.
without getting punctures.
I suspect I'm riding on better swept roads...
The Conti Contact Speeds have held up very well on the trike so far but
mostly local where there aren't many horrors. Some glass but looks like
the NSW drink container deposit scheme is working: the glass I'm seeing
now is windscreen glass not bottle glass so lumps not sharp bits.
I noticed that when I lived in Adelaide which had a bottle refund schem
for years: you just don't get broken bottles on the road there.
Zebee
Roger Merriman
Apr 5, 2020, 6:54:10 PM4/5/20
to
Zebee Johnstone <zeb...@gmail.com> wrote:
> In uk.rec.cycling.moderated on Sun, 5 Apr 2020 21:39:14 -0000 (UTC)
> Roger Merriman <ro...@sarlet.com> wrote:
>> Kim Wall <k...@ductilebiscuit.net> wrote:
>>>
>>> Indeed. In the absence of catastrophic damage, I've found they
>>> eventually get to a point where they start getting regular punctures,
>>> rather than generally not getting punctures. There's usually a fair
>>> amount of tread left, and no obvious signs of falling apart.
>>
>> With the Marathon plus/Touring that doesn’t seem to have happened might
>> well with the Big Apples, it’s what seems to happen to road tyres often.
>> but the plus bit keeps working it’s just that over the 7/8k of Miles it’s
>> picked up enough slashes that gets to the point I’m uncomfortable using
>> them any more.
>
> THe ones on the 2 wheel 'bent so far have worn the tread to the belt
> without getting punctures.
>
> I suspect I'm riding on better swept roads...
I ride on very little roads for the commute, it’s just shy of 12 miles of
> In uk.rec.cycling.moderated on Sun, 5 Apr 2020 21:39:14 -0000 (UTC)
> Roger Merriman <ro...@sarlet.com> wrote:
>> Kim Wall <k...@ductilebiscuit.net> wrote:
>>>
>>> Indeed. In the absence of catastrophic damage, I've found they
>>> eventually get to a point where they start getting regular punctures,
>>> rather than generally not getting punctures. There's usually a fair
>>> amount of tread left, and no obvious signs of falling apart.
>>
>> With the Marathon plus/Touring that doesn’t seem to have happened might
>> well with the Big Apples, it’s what seems to happen to road tyres often.
>> but the plus bit keeps working it’s just that over the 7/8k of Miles it’s
>> picked up enough slashes that gets to the point I’m uncomfortable using
>> them any more.
>
> THe ones on the 2 wheel 'bent so far have worn the tread to the belt
> without getting punctures.
>
> I suspect I'm riding on better swept roads...
which I connect up parks the first 5 or so miles, so lots of gravel paths
and what not, and the next 5 miles are old segregated bike path, the road
was intended to be one of the many motorways ringing London, it’s this
section that has fair bit of glass though it’s less of issue than I first
feared.
>
> The Conti Contact Speeds have held up very well on the trike so far but
> mostly local where there aren't many horrors. Some glass but looks like
> the NSW drink container deposit scheme is working: the glass I'm seeing
> now is windscreen glass not bottle glass so lumps not sharp bits.
>
> I noticed that when I lived in Adelaide which had a bottle refund schem
> for years: you just don't get broken bottles on the road there.
>
> Zebee
>
There isn’t much glass it’s just they so rarely clean it! Maybe twice a
> The Conti Contact Speeds have held up very well on the trike so far but
> mostly local where there aren't many horrors. Some glass but looks like
> the NSW drink container deposit scheme is working: the glass I'm seeing
> now is windscreen glass not bottle glass so lumps not sharp bits.
>
> I noticed that when I lived in Adelaide which had a bottle refund schem
> for years: you just don't get broken bottles on the road there.
>
> Zebee
>
year?
Roger Merriman
Matthew Vernon
Apr 6, 2020, 8:22:41 AM4/6/20
to
Roger Merriman <ro...@sarlet.com> writes:
> I’ve generally replaced marathons types when the war wounds get too much!
Mine seem to reach a point where tiny shards of gravel stick in rather
> I’ve generally replaced marathons types when the war wounds get too much!
than coming out; that typically is fairly shortly followed by punctures
(as a shard gets far enough in to start puncturing), so I try and
replace at that point rather than after having to find the offending
fragment in the dark by the roadside...
Matthew
--
`O'-----0 `O'---. `O'---. `O'---.
\___| | \___|0-/ \___|/ \___|
| | /\ | | \ | |\ | |
The Dangers of modern veterinary life
Nick Maclaren
Apr 6, 2020, 8:38:32 AM4/6/20
to
In article <np37dys...@sanger.ac.uk>,
Plus Tour is good, but ordinary Marathon Plus only so-so, and even much
cheaper tready tyres are as good. What I think happens is that:
If such shards/thorns/whatever get stuck into the thread, they break off
in use, and gradually get pushed in, but there is a sufficient distance
that they don't get the whole way - I have found quite a lot of such
things, on inspection of older tyres.
If they go between the tread (unusual, but happens), they break off,
and the tread prevents them from being pushed in the whole way, so an
infrequent inspection and removal is enough. I have also found a few
such things in that state.
But, as always, it's a matter of probabilities - and then there are
large cuts, which I have very rarely had, but I know some people get
quite a lot.
Regards,
Nick Maclaren.
Matthew Vernon <mat...@debian.org> wrote:
>Roger Merriman <ro...@sarlet.com> writes:
>
>> I’ve generally replaced marathons types when the war wounds get too much!
>
>Mine seem to reach a point where tiny shards of gravel stick in rather
>than coming out; that typically is fairly shortly followed by punctures
>(as a shard gets far enough in to start puncturing), so I try and
>replace at that point rather than after having to find the offending
>fragment in the dark by the roadside...
Yes. That's why I find there is no substitute for tread - e.g. Marathon
>Roger Merriman <ro...@sarlet.com> writes:
>
>> I’ve generally replaced marathons types when the war wounds get too much!
>
>Mine seem to reach a point where tiny shards of gravel stick in rather
>than coming out; that typically is fairly shortly followed by punctures
>(as a shard gets far enough in to start puncturing), so I try and
>replace at that point rather than after having to find the offending
>fragment in the dark by the roadside...
Plus Tour is good, but ordinary Marathon Plus only so-so, and even much
cheaper tready tyres are as good. What I think happens is that:
If such shards/thorns/whatever get stuck into the thread, they break off
in use, and gradually get pushed in, but there is a sufficient distance
that they don't get the whole way - I have found quite a lot of such
things, on inspection of older tyres.
If they go between the tread (unusual, but happens), they break off,
and the tread prevents them from being pushed in the whole way, so an
infrequent inspection and removal is enough. I have also found a few
such things in that state.
But, as always, it's a matter of probabilities - and then there are
large cuts, which I have very rarely had, but I know some people get
quite a lot.
Regards,
Nick Maclaren.
Roger Merriman
Apr 6, 2020, 5:04:30 PM4/6/20
to
Nick Maclaren <n...@wheeler.UUCP> wrote:
> In article <np37dys...@sanger.ac.uk>,
> Matthew Vernon <mat...@debian.org> wrote:
>> Roger Merriman <ro...@sarlet.com> writes:
>>
>>> I’ve generally replaced marathons types when the war wounds get too much!
>>
>> Mine seem to reach a point where tiny shards of gravel stick in rather
>> than coming out; that typically is fairly shortly followed by punctures
>> (as a shard gets far enough in to start puncturing), so I try and
>> replace at that point rather than after having to find the offending
>> fragment in the dark by the roadside...
>
> Yes. That's why I find there is no substitute for tread - e.g. Marathon
> Plus Tour is good, but ordinary Marathon Plus only so-so, and even much
> cheaper tready tyres are as good. What I think happens is that:
>
> If such shards/thorns/whatever get stuck into the thread, they break off
> in use, and gradually get pushed in, but there is a sufficient distance
> that they don't get the whole way - I have found quite a lot of such
> things, on inspection of older tyres.
As ever it seems to depend, with my other bikes with faster softer tyres
> In article <np37dys...@sanger.ac.uk>,
> Matthew Vernon <mat...@debian.org> wrote:
>> Roger Merriman <ro...@sarlet.com> writes:
>>
>>> I’ve generally replaced marathons types when the war wounds get too much!
>>
>> Mine seem to reach a point where tiny shards of gravel stick in rather
>> than coming out; that typically is fairly shortly followed by punctures
>> (as a shard gets far enough in to start puncturing), so I try and
>> replace at that point rather than after having to find the offending
>> fragment in the dark by the roadside...
>
> Yes. That's why I find there is no substitute for tread - e.g. Marathon
> Plus Tour is good, but ordinary Marathon Plus only so-so, and even much
> cheaper tready tyres are as good. What I think happens is that:
>
> If such shards/thorns/whatever get stuck into the thread, they break off
> in use, and gradually get pushed in, but there is a sufficient distance
> that they don't get the whole way - I have found quite a lot of such
> things, on inspection of older tyres.
it’s certainly true that it’s the tread that picks up stuff, the Gravel
Bike is more prone as even with less racy tyres, they are still fairly
lightweight though by some margin more resilient than a road tyre, ie a wet
gritty road ride has no real risk. The MTB the tyres are intended to be
able to cope with sidewalk rips and what not, plus have deep tall knobs so
very unlucky to have any problems.
>
> If they go between the tread (unusual, but happens), they break off,
> and the tread prevents them from being pushed in the whole way, so an
> infrequent inspection and removal is enough. I have also found a few
> such things in that state.
>
I found that Hawthorn was able *just* to push though a marathon plus
> If they go between the tread (unusual, but happens), they break off,
> and the tread prevents them from being pushed in the whole way, so an
> infrequent inspection and removal is enough. I have also found a few
> such things in that state.
>
Touring via the tread, it resulted a few times in a slow puncture and a
truly impressive thorn!
The gravel/glass shards don’t seem to go any further than surface with both
the Marathon plus Touring and the Big Apples both have sufficient depth
that no puncture is caused even with sometimes quite impressive shards!
> But, as always, it's a matter of probabilities - and then there are
> large cuts, which I have very rarely had, but I know some people get
> quite a lot.
>
Zebee Johnstone
May 17, 2020, 2:12:00 AM5/17/20
to
In uk.rec.cycling.moderated on Tue, 24 Mar 2020 18:43:06 -0000 (UTC)
Zebee
Nick Maclaren <n...@wheeler.UUCP> wrote:
>
> I am getting the Lezyne valve than zeebee suggested, and will see how
> much the extra hose length helps. I have got the version without a
> gauge, because several reviews damned the gauge to hell, but the pen
> gauges used for car tyres are cheap, small, easy to use and accurate.
> And, as you may notice, available only for Schraeder.
>
How did you go with the pump Nick?
>
> I am getting the Lezyne valve than zeebee suggested, and will see how
> much the extra hose length helps. I have got the version without a
> gauge, because several reviews damned the gauge to hell, but the pen
> gauges used for car tyres are cheap, small, easy to use and accurate.
> And, as you may notice, available only for Schraeder.
>
Zebee
Nick Maclaren
May 17, 2020, 9:04:41 AM5/17/20
to
In article <slrnrc1ld3...@gmail.com>,
and the frame pump is much easier. Thanks for the reminder, because
I must start using it instead of that to give it a better test.
Initial verdict: I can use it standing up, though I have to stoop,
especially as the valve needs to be low down for the pen gauge.
It's a pain not having a direct-reading gauge, but the reviews were
SO damning I didn't want to take the risk.
Regards,
Nick Maclaren.
Zebee Johnstone <zeb...@gmail.com> wrote:
>>
>> I am getting the Lezyne valve than zeebee suggested, and will see how
>> much the extra hose length helps. I have got the version without a
>> gauge, because several reviews damned the gauge to hell, but the pen
>> gauges used for car tyres are cheap, small, easy to use and accurate.
>> And, as you may notice, available only for Schraeder.
>>
>
>How did you go with the pump Nick?
It's OK, but I haven't used it much, because I am under lockdown,
>>
>> I am getting the Lezyne valve than zeebee suggested, and will see how
>> much the extra hose length helps. I have got the version without a
>> gauge, because several reviews damned the gauge to hell, but the pen
>> gauges used for car tyres are cheap, small, easy to use and accurate.
>> And, as you may notice, available only for Schraeder.
>>
>
>How did you go with the pump Nick?
and the frame pump is much easier. Thanks for the reminder, because
I must start using it instead of that to give it a better test.
Initial verdict: I can use it standing up, though I have to stoop,
especially as the valve needs to be low down for the pen gauge.
It's a pain not having a direct-reading gauge, but the reviews were
SO damning I didn't want to take the risk.
Regards,
Nick Maclaren.
Zebee Johnstone
May 17, 2020, 3:29:29 PM5/17/20
to
In uk.rec.cycling.moderated on Sun, 17 May 2020 13:04:23 -0000 (UTC)
Really?
I've not had to use mine in anger but I've tested it on all my bikes.
No idea what the gauge issue is - not having seen it mentioned in any
reviews I saw - but for me it seems to do the job.
What problem did the reviewers see?
My main complaint is that like all micro pumps those last 20psi are hard
work.
Zebee
I've not had to use mine in anger but I've tested it on all my bikes.
No idea what the gauge issue is - not having seen it mentioned in any
reviews I saw - but for me it seems to do the job.
What problem did the reviewers see?
My main complaint is that like all micro pumps those last 20psi are hard
work.
Zebee
Nick Maclaren
May 17, 2020, 5:14:19 PM5/17/20
to
In article <slrnrc344b...@gmail.com>,
such problems, which I felt was too high.
Regards,
Nick Maclaren.
Zebee Johnstone <zeb...@gmail.com> wrote:
>
>Really?
>
>I've not had to use mine in anger but I've tested it on all my bikes.
>No idea what the gauge issue is - not having seen it mentioned in any
>reviews I saw - but for me it seems to do the job.
>
>What problem did the reviewers see?
Grossly inaccurate and leaked. About 10% of the buyers reported
>
>Really?
>
>I've not had to use mine in anger but I've tested it on all my bikes.
>No idea what the gauge issue is - not having seen it mentioned in any
>reviews I saw - but for me it seems to do the job.
>
>What problem did the reviewers see?
such problems, which I felt was too high.
Regards,
Nick Maclaren.
Zebee Johnstone
May 17, 2020, 6:00:58 PM5/17/20
to
In uk.rec.cycling.moderated on Sun, 17 May 2020 21:14:07 -0000 (UTC)
on my 2 wheel 'bent's presta 26" the gauge read the same as my
floor pump's within a psi or so, and on the trike's rear tyre which
is schraeder seemed to the the same as my elderly pen gauge. I have
noticed no leakage. So guess I'm in the 90% of lucky ones.
Zebee
floor pump's within a psi or so, and on the trike's rear tyre which
is schraeder seemed to the the same as my elderly pen gauge. I have
noticed no leakage. So guess I'm in the 90% of lucky ones.
Zebee
Nick Maclaren
May 18, 2020, 5:30:24 AM5/18/20
to
In article <slrnrc3d0b...@gmail.com>,
away from a bicycle shop that did not attract me. While Schrader
has the advantage that I can borrow a car tyre pump, punctures would
change from a minor to major nuisance.
Regards,
Nick Maclaren.
Zebee Johnstone <zeb...@gmail.com> wrote:
>
>>>I've not had to use mine in anger but I've tested it on all my bikes.
>>>No idea what the gauge issue is - not having seen it mentioned in any
>>>reviews I saw - but for me it seems to do the job.
>>>
>>>What problem did the reviewers see?
>>
>> Grossly inaccurate and leaked. About 10% of the buyers reported
>> such problems, which I felt was too high.
>
>on my 2 wheel 'bent's presta 26" the gauge read the same as my
>floor pump's within a psi or so, and on the trike's rear tyre which
>is schraeder seemed to the the same as my elderly pen gauge. I have
>noticed no leakage. So guess I'm in the 90% of lucky ones.
Yes. It was the prospect of it developing a leak when I was 3 days
>
>>>I've not had to use mine in anger but I've tested it on all my bikes.
>>>No idea what the gauge issue is - not having seen it mentioned in any
>>>reviews I saw - but for me it seems to do the job.
>>>
>>>What problem did the reviewers see?
>>
>> Grossly inaccurate and leaked. About 10% of the buyers reported
>> such problems, which I felt was too high.
>
>on my 2 wheel 'bent's presta 26" the gauge read the same as my
>floor pump's within a psi or so, and on the trike's rear tyre which
>is schraeder seemed to the the same as my elderly pen gauge. I have
>noticed no leakage. So guess I'm in the 90% of lucky ones.
away from a bicycle shop that did not attract me. While Schrader
has the advantage that I can borrow a car tyre pump, punctures would
change from a minor to major nuisance.
Regards,
Nick Maclaren.
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