and of course if you see tube, you rock the bead to pull it back into the
tire. The tube really wants to be inside the tire if you give it a chance.
New tubes are smaller diameter than the rim - they have to be, because
they're going to stretch - when you reinstall a used tube, they're
Ron Mc stated "I haven't had it happen in 5 years and my tire-mounting
algorithm now includes lowering the tire pressure below 20 psi, until I can
push the bead in and see rim strip. I go all the way around the tire on
both sides and make sure I don't see tube."
++1 on this. I do the same
I caught one of these pinches the last time I changed tires; I THINK I
fixed it. I'm 50 miles or so post-change, so cross your fingers
rod
On Thursday, January 19, 2017 at 12:37:59 AM UTC-5, Christopher Murray
wrote:
>
> I've had this happen three separate times on three different bikes
Still probably a pinch flat, but yes, the tire in the sun could have
increased the pressure to open the pinch wider. With Challenge tires as
the bead stretches, I've had a couple happen while rolling as the day
warmed up. One day on a greenway, the guy whose house backed up to the
path came
I had this happen once. My bike was up on my roof rack on my car and I was
at the local trailhead getting ready to start a ride. It was an explosive
sound -- and yes, it sounded like a shotgun blast. There were a bunch of
other people at the trailhead and everyone jumped and we all were looking
for me it was always on Challente open tubulars (maybe a 3 or 4 times
total).
I haven't had it happen in 5 years and my tire-mounting algorithm now
includes lowering the tire pressure below 20 psi, until I can push the bead
in and see rim strip. I go all the way around the tire on both
I was chatting with a tech in a local bike shop a couple of days ago and
asked him whether he'd ever had a tire explode. He said no, but that from
time to time one of the bikes on display in his large downtown (Washington
D.C.) store will randomly detonate, typically at night when he's alone
>
> Have to agree with the others - was likely pinched. We had this happen
> over and over with my wife's rear wheel when she switched to Little-Big
> Bens. That combination of rim and tire made it extremely hard to get the
> tire seated properly. In the end, after a lot of other
Does anyone know the Max Recommended Pressure??? An old F Berto article
stated tires are tested to 2xRec'd Preesure to stay seated on a nominal rim.
Inflating a 60psig tire in 20°F temperature and then bringing it inside to
a 70°F room increases the pressure by 5 to 6 psig. Not likely this
I've had this happen when my rim tape had been worn down (from wet/water)
to expose the sharp edges of the spoke holes inside the rim.
On Friday, January 13, 2017 at 6:10:24 AM UTC-8, Kevin Lindsey wrote:
>
> So I inflated the 50mm Schwalbe Marathons on my Hunq to 60 psi (rear) and
> 40 psi
I agree that it is highly unlikely pressure had anything to do with it. Rat
Trap Max pressure is 55psi, and that is almost a 60mm tire. And most tires
are built to withstand twice the pressure listed on the sidewalls. I have
to pump the RTP to at least 60 just to get the bead to pop into place.
Before I even install the tire I inflate the tube just enough to give it
some shape. The install the tire, leaving half open. Then slide the tube in
place, then close the tire, use some lever if necessary but often they are
not, just depends on the tire. Then I start to fill the tire, but just
On 01/13/2017 02:38 PM, Ian A wrote:
I've had the same symptoms from catching the tube between the bead and
rim and it's not always been an immediate reaction. Sometimes a few
hours have passed. I'm a little gun-shy around newly changed tires
now. I always slightly inflate the tube and often
I've had the same symptoms from catching the tube between the bead and rim
and it's not always been an immediate reaction. Sometimes a few hours have
passed. I'm a little gun-shy around newly changed tires now. I always
slightly inflate the tube and often used a narrower tube than recommended
my first reaction was two things:
1.) i agree with bill and peter that 60psi is high. i usually go no higher
than 40 on compass rat traps (measure 50mm), and they need a bit more
pressure because the sidewalls are supple
2.) for stiffer / tires with wirebead, i go lower pressure. i blew off the
while the possibility exists that there was a QC problem with the tube,
more likely it was a QC problem with the installer like others mentioned
overinflation, pinched the tube, not seating the tire onto the rim.
minh--who has been guilty of poor QC with tire installation in the past
resulting
When installing the tube, do you slightly inflate the tube, which makes
tucking it between tire and rim without getting pinched much easier? If so,
and you know you check it before calling it done, then follow Conway's
advice. If not, try it with future installs, and see if that fixes the
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