inner tube exploding

[Kathy]

I had an inner tube replaced at a bike shop and biked at least 50 miles
when the same tire exploded. It sounded like a firecracker going off.
I am wondering if it is possible to bike that far with an inner tube
pinched in the tire & rim. Both the shop and I inspected the tire. I
thought I had removed the tiny rock that had caused the first flat.

[thirty-six]

Yes, the constant running of the tyre tends to keep it in place and it
is when you stop that the tyre creeps off the rim. Most of my blow-
offs were at night while resting, sometimes after a ride, sometimes
after pumping up tyres to full pressure. I can remember two on the
road and one being 21 miles into the day's ride after two stops of
about 20 minutes each. The other blow-off I remember was all but a
mile away from home, again whilst pausing, but for only two minutes.

[David Scheidt]

Kathy wrote:
:I had an inner tube replaced at a bike shop and biked at least 50 miles

:when the same tire exploded. It sounded like a firecracker going off.
:I am wondering if it is possible to bike that far with an inner tube
:pinched in the tire & rim. Both the shop and I inspected the tire. I

Yes, it is. The shop fucked up.




--
sig 2

[Joy Beeson]

Could also be a damaged or defective tube, or a wrinkle in the tube.

Or (I presume that examination of the casing ruled this one out)
running over a shard of sheet metal that slashes a big hole.
(I was in the Voorheesville tunnel at the time; interesting
experience.)

Went on a picnic once with a woman who showed up on a department-store
bike. It was plain that the tires hadn't been topped off since she
bought it, so one of the guys inflated them for her. About a quarter
mile down the road, one of her tires went flat.

Moral of the story: when you top off a tire for a clueless newbie,
pretend that you have just mounted that tube, and let the air out and
re-pump until you are sure there are no wrinkles in the tube.

Of course, the tube was probably so damaged by then that it might have
happened anyway.

Joy Beeson
--
joy beeson at comcast dot net
http://roughsewing.home.comcast.net/ -- sewing
http://n3f.home.comcast.net/ -- Writers' Exchange
The above message is a Usenet post.
I don't recall having given anyone permission to use it on a Web site.

[AMuzi]

Yes, that could be many things but my bet would be on an
installation error.

--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971

[David Scheidt]

Joy Beeson <jbe...@invalid.net.invalid> wrote:

:On Mon, 2 Apr 2012 09:47:08 -0500, Kathy wrote:

:> I had an inner tube replaced at a bike shop and biked at least 50 miles
:> when the same tire exploded. It sounded like a firecracker going off.
:> I am wondering if it is possible to bike that far with an inner tube
:> pinched in the tire & rim. Both the shop and I inspected the tire. I
:> thought I had removed the tiny rock that had caused the first flat.

:Could also be a damaged or defective tube, or a wrinkle in the tube.

if you hear it go 'boom', then the innertube has to be outside the
tire. The usual reason is because it's pinched on the bead. Massive
casing failure can do that too, but that's pretty obvious.




--
sig 47

[Duane]

On 04/02/2012 12:27 PM, David Scheidt wrote:
> Joy Beeson<jbe...@invalid.net.invalid> wrote:
> :On Mon, 2 Apr 2012 09:47:08 -0500, Kathy wrote:
>
> :> I had an inner tube replaced at a bike shop and biked at least 50 miles
> :> when the same tire exploded. It sounded like a firecracker going off.
> :> I am wondering if it is possible to bike that far with an inner tube

> :> pinched in the tire& rim. Both the shop and I inspected the tire. I

> :> thought I had removed the tiny rock that had caused the first flat.
>
> :Could also be a damaged or defective tube, or a wrinkle in the tube.
>
> if you hear it go 'boom', then the innertube has to be outside the
> tire. The usual reason is because it's pinched on the bead. Massive
> casing failure can do that too, but that's pretty obvious.
>

I had one pop where the valve stem connects to the tube after about
100k. Sounded like a rifle shot.
Don't think it was pinched. Looked like a defective tube. That's
pretty rare. I think it more likely
that the tube was wrinkled.

[datakoll]

as 36 wrote, and ditto hear. OR SLOW SPEEDS. BANG

[Sir Ridesalot]

Did the shop replace the tube free of charge? I've yet to find a shop
that will replace a tube they installed improperly (unless it blew in
the shop which happened to me back in the 1980's on a brand new bike I
had them top up the pressure in the tires of before I left the shop.
Both tubes blew. One blew and when they were in the back putting in a
new tube the other one blew. The shop said they'd never had believe it
if the bike had beenout of the shop and on the road when that
happened. A couple of years ago Ihad a shop install two new 30 mm
clincher cyclocross tires and tubes on my bike. The next morning I
pumped the tires up to 60 PSI and a few moments later the front tube
blew and sent the tire right off the rim. Shop installation error
abviously but they wouldn't give me a new tube even though I showed
them the large hole in the tube they had installed. Now I instal all
my own new tubes.

Cheers

[Kathy]

Well, I had it fixed and the person had to replace the tire also
because the explosion of the inner tube tore about a 2 inch hole in the
tire also.

[datakoll]

with a small bill product/procedure mlike a tube blowout, whinning at the LBS is ppppppprob not indicated.

In facto (legal latin), whinning could ppppproduce a statewide rep as an intolerable ahole (IA)


tube blowouts I suffered-4 ? - were my fault either mechanics brainfade or lack of inspectio at the rim/tire interface when looking at brake pad position. BPP can caws tube blowout.

[Dan O]

I don't think so. The tube has to get out of the tire *before* it
will explode.

[Jeff Liebermann]

Something is odd here. It would take quite a high velocity explosive
air release to blow both the inner tube and the tire. Clincher tires
leak slightly between the rim and the tire, making an explosive
release unlikely. Simultaneous release would require a simultaneous
puncture. The only way I can think this might happen is if someone
used an explosive mixture to inflate the tire (i.e. cigarette lighter
butane), or someone shot a bullet at your tire. Riding over a nail
will simply produce a small hole and very little noise. There's also
not enough air pressure to eject the nail, causing a slow leak,
instead of an explosive release.

I assume the 2 inch "hole" is more like a 2 inch long tear in the
tire. That's a very long tear. Tires have bias ply kevlar or steel
reinforcing, making it difficult to produce a long linear cut.

Do you have any photos?

--
Jeff Liebermann je...@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

[datakoll]

the tire's sidewall wears away from tire bead, unseen unexpected unwanted undesireabble.

the wear area is prob worn in to an open mesh of sidewall fabric-diifcult to see in a casual imspection. The mind really needs to have sEen one before A.B.C.D.ECT

BANG

a tube blowout can make a startling loud BANG

[AMuzi]

Kathy wrote:
> Well, I had it fixed and the person had to replace the tire also because
> the explosion of the inner tube tore about a 2 inch hole in the tire also.

If there was a long rip at the edge of the tire, it was most
probably a pre-existing abrasion [1] which failed once the
pressure was normal [2]. It's highly improbable that your
tear was caused by the blow off.

[1] Someone ought check brake pad height if that hasn't been
rectified already. And spin the wheel. A flat spot or dent
in the rim can cause the brake pad to abrade the tire at the
low spot.

[2] A damaged casing can hold for a good long while at 20~25
psi which is about the average for urban machines dragged in
here. Not so much at 80psi.

[datakoll]

tirewall is patchable in an emergency
cut a uhuh 4-5- inch long tube rubber section as curved in the donor for what's needed in the repaired.

slit donor in a position opposite the repaired holeside.

clean with CHOH, abrade, washout with CHOH

apply glue GOOP, West's 2 part epoxy, Wals 2 part epoxy I guess whatever there's around the shop. Obviously spendin glue $$$ on a blown sidewall usually isnot economic

a heavy patch. can be durabble, can also fail but not quickly if cleaned and abraded

I assume West's 2 part from NRS rafting would last last

some tourers-a singular bunch ?- cut the patch stock as kit. leaving material as a full tube section.

then yawl need a sharp knife

[datakoll]

let me be clear whcih I'm not. Yawl using a new tube or new repaired tube, the patch with a curved slit down the side opposite the tire's hole and the blown sidewall.
slather with glue afterpumping tube with a pound or two kinda limpoid, wrap, position and survey, then pump tite to secure on rim

thump thump can be artfully done

[Frank Krygowski]

Kathy wrote:
> Well, I had it fixed and the person had to replace the tire also because
> the explosion of the inner tube tore about a 2 inch hole in the tire also.

I'm pretty sure you're mixing cause and effect.

--
- Frank Krygowski

[Ian Field]

"David Scheidt" <dsch...@panix.com> wrote in message
news:jlcfq2$aa4$1...@reader1.panix.com...

Easily done - IME modern tyre beads seem a lot looser on the rims than on
the old cycles.

You have to almost inflate the tyre and check the bead is evenly seated all
the way round - then fully inflate to the specified pressure.

Otherwise the tyre bead creeps off the rim and the innertube tries to
escape.

[datakoll]

...
> > Kathy wrote:
> > :I had an inner tube replaced at a bike shop and biked at least 50 miles
> > :when the same tire exploded. It sounded like a firecracker going off.
> > :I am wondering if it is possible to bike that far with an inner tube
> > :pinched in the tire & rim. Both the shop and I inspected the tire. I
> >
> > Yes, it is. The shop fucked up.
>
>
> Easily done - IME modern tyre beads seem a lot looser on the rims than on
> the old cycles.
>
> You have to almost inflate the tyre and check the bead is evenly seated all
> the way round - then fully inflate to the specified pressure.
>
> Otherwise the tyre bead creeps off the rim and the innertube tries to
> escape.

YOUR RIMS SHRINK ? CLIMATE ?

[Ian Field]

"datakoll" <data...@yahoo.com> wrote in message
news:1802980.754.1333753996856.JavaMail.geo-discussion-forums@pbcmf4...

My theory is; they made the tyres an easier fit to assist the people who's
only reason for buying a bicycle is to show off they have more money than
sense.

[Dan O]

On Apr 7, 7:58 am, "Ian Field" <gangprobing.al...@ntlworld.com> wrote:
> "datakoll" <datak...@yahoo.com> wrote in message

Maybe some of the people spec'ing new tires are also bicyclists and
subliminally motivated by their own struggles with (too) tight tires
(?)

[Ian Field]

"Dan O" <danov...@gmail.com> wrote in message
news:e2314a6c-83bc-48d0...@t8g2000pbe.googlegroups.com...

On the old cycles I'd normally use tyre levers to remove the tyre but could
usually refit them without levers - with mountain bikes I can usually get
the tyre off without levers.

They've been made loose to help the brain-dead yuppies who're too thick to
position one side of the bead in the rim well opposite where they're
levering it over the rim.

[Sir Ridesalot]

On Apr 7, 1:51 pm, "Ian Field" <gangprobing.al...@ntlworld.com> wrote:
> "Dan O" <danover...@gmail.com> wrote in message

I have a pair of Victoria Zaffiro 700C x 25 mm tires that I have used
for a few years now. Recently I tried to mount them on my old Matrix
rims. It was a no go no waysituation.I broke three tire levers trying
to get the tire onto one of the rims and there was still about 6
inches of unmounted tire. And that was just one side. I never did get
to try an mount the second tire. Those Zaffiro tires fit my other rims
okay even if they are a fairly tight fit. But there's no way they'll
fit the Matrix rims. I think it's one of those situations where the
tire bead is a bit undersize and the rimis a bit oversize.

Cheers

[Ian Field]

"Sir Ridesalot" <i_am_cyc...@yahoo.ca> wrote in message
news:49b3ad64-dfea-4f33...@l4g2000vbt.googlegroups.com...

Or a slight difference between nearly the same imperial and metric standard
sizes.

[AMuzi]

Jesuit level contortions of logic, all to avoid saying that
Trek can't still manage to make or buy a properly
dimensioned rim.

What else is new?