Need source for presta valve extenders
z, fred
valve core out of the tire valve and thread it into the exposed (after
mounting on rim) end of the extender.
Scott
To my knowledge, no one makes an extender that long. You'll need to
take two extenders and create one long extender. It works, I've done
it for 808s.
Scott
Vittoria extenders, BTW. Only works if your tubulars (or tubes, if
you're talking clinchers) have removable valve stem cores. You can
screw as many of these together as you want, just put teflon thread
tape at each of the junctions, put the valve core back in, and BAM!,
you're in bidness.
Shameless plug for a friend's shop: you can get 'em at www.excelsports.com
Joe Big
Try TOPEAK. They make a 78 mm presta valve extender.
http://www.topeak.com/products/Floor-Pumps/PrestaValveExtenderXL
http://www.topeak.com/products/Floor-Pumps/PrestaValveExtender
Steve Freides
I would ask on news:rec.bicycles.tech
-S-
Betty
>> Looking for ones long enough for a 90 mm deep rim and where you take
>> the valve core out of the tire valve and thread it into the exposed
>> (after mounting on rim) end of the extender.
Steve Freides wrote:
> I would ask on news:rec.bicycles.tech
Only if you like advice from the inane and the insane.
Steve Freides
Or answers to questions like this one. Is the OP looking for a date or
a valve extender?
Betty
>>>> Looking for ones long enough for a 90 mm deep rim and where you take
>>>> the valve core out of the tire valve and thread it into the exposed
>>>> (after mounting on rim) end of the extender.
>> Steve Freides wrote:
>>> I would ask on news:rec.bicycles.tech
Betty wrote:
>> Only if you like advice from the inane and the insane.
Steve Freides wrote:
> Or answers to questions like this one.
They'll answer by telling him he should ride a box section 36 spoke tyed
and soldered rim on a steel bike before continuing with a 500 post
argument about spoking technique and eventually culminating in another
helmet war.
Is the OP looking for a date or a valve extender?
rbr is not the right place if you're looking for a date, however if he
needs the latter (extender) to operate on the former, rbr may indeed be
qualified to answer despite the fact that most around here are using s
box rim (if anything at all) when it comes to that kind of thing.
Anyway if he really wants advice he should ask van de man.
Steve Freides
> z, fred wrote:
>>>>> Looking for ones long enough for a 90 mm deep rim and where you
>>>>> take the valve core out of the tire valve and thread it into the
>>>>> exposed (after mounting on rim) end of the extender.
>
>>> Steve Freides wrote:
>>>> I would ask on news:rec.bicycles.tech
>
> Betty wrote:
>>> Only if you like advice from the inane and the insane.
>
> Steve Freides wrote:
>> Or answers to questions like this one.
>
> They'll answer by telling him he should ride a box section 36 spoke
> tyed and soldered rim on a steel bike before continuing with a 500
> post argument about spoking technique and eventually culminating in
> another helmet war.
_and_ they'll answer his question somewhere along the way.
As to the rest, I'm riding 1980's sewup rims, so I guess I can't really
participate in that argument, can I, now? Mine are 28 hole for the most
part, though, so I guess I can claim at least some weight-weenie-dom.
> Is the OP looking for a date or a valve extender?
>
> rbr is not the right place if you're looking for a date, however if he
> needs the latter (extender) to operate on the former, rbr may indeed
> be qualified to answer despite the fact that most around here are
> using s box rim (if anything at all) when it comes to that kind of
> thing.
I'm getting a creepy feeling reading the above paragraph, although I'm
not even sure I understand it completely. Rest assured that I don't
want to understand it completely, either.
> Anyway if he really wants advice he should ask van de man.
Absolutely, or on rec.bicycles.tech. :)
-S-
Fred on a stick
> _and_ they'll answer his question somewhere along the way.
[...]
>> Anyway if he really wants advice he should ask van de man.
>
> Absolutely, or on rec.bicycles.tech. :)
http://groups.google.com/group/rec.bicycles.tech/msg/f40ddbf2336b50e9
Fred on a stick
> Absolutely, or on rec.bicycles.tech. :)
BTW, did you not notice that a link to the right extenders was posted 4
hours before you posted your suggestion to ask on rbt?
Steve Freides
Yes, but that doesn't mean they're the only product that's out there,
and it also doesn't eliminate the need to mention a more appropriate
group in which to ask the question.
-S-
Fred on a stick
Hmmm. I'm betting that more people in rbr have experience with 90mm deep
rims than in rbt. But it sounds like a little test. Why don't you post the
same question to rbt and see how long it takes to get a reasonably helpful
response.
And, there wasn't just one response: Scott suggested connecting two
extenders.
Scott
Gee, thanks for that, Steve, given that his question has already been
answered. What would we do w/out your input?
Scott
Looks like those Topeak valve stem extenders that were also
recommended are the type that just screw onto any old valve stem, with
the valve open. They'll work, sort of, but not nearly as well as the
Vittoria extenders that essentially become part of the stem, with the
core at the end and out of the rim itself.
The longest one Vittoria makes works okay for a 60mm rim, but in my
experience the tip of the valve stem barely stuck out above an 808
rim. So, take two of the less expensive, shorter ones and screw them
together... they'll extend well beyond the rim and allow you to open/
close the valve stem with each use.
Fred on a stick
> Looks like those Topeak valve stem extenders that were also
> recommended are the type that just screw onto any old valve stem, with
> the valve open. They'll work, sort of, but not nearly as well as the
> Vittoria extenders that essentially become part of the stem, with the
> core at the end and out of the rim itself.
I've never had a problem with the simple "leave the valve open" extenders. I
was going to ask what kinds of problems you've run into but this isn't rbt
so maybe I should ask over there.
Steve Freides
Have much less to complain about, Scott, without a doubt. You're
welcome. NB: I explained my reasons in another reply in this thread.
Read, please.
-S-
Betty
>> Anyway if he really wants advice he should ask van de man.
Steve Freides wrote:
> Absolutely, or on rec.bicycles.tech. :)
Shirley you meant rec.bicycles.sociopath
Betty
> Looks like those Topeak valve stem extenders that were also
> recommended are the type that just screw onto any old valve stem, with
> the valve open. They'll work, sort of, but not nearly as well as the
> Vittoria extenders that essentially become part of the stem, with the
> core at the end and out of the rim itself.
I wonder why tubbie manufacturers don't make tyres with long valves,
after all I would suggest 90% of current tubbie use is race only deep
section wheels. Obviously you'd still need an extender for an 808 but at
least if you use a 404 say, you would'nt need that phallic valve
extender that Zipp provide with the bulbous tip that can't be very
healthy for your pump head.
z, fred
I have occasionally had the valve stick so that I can't put air in or
let it out. I've even shoved a long hex wrench down the extender and it
didn't get the valve to break loose.
Also, I had a slow leak in a tubular on a deep section wheel several
weeks ago. With the "leave the valve open" extenders, I had to pull the
tire off the rim to remove the valve core and squirt some sealant into
the tire. I wouldn't want to do that with the core in place.
Fred on a stick
Ah. I once had a stuck valve but I poked a little allen wrench down
there and it freed up immediately. That was so minor that I completely
forgot about it.