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Old January 25th 09, 06:38 PM posted to rec.bicycles.tech
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Default Gluing Tread on a Tubular Casing

On Jan 24, 8:46*pm, Stephen Bauman wrote:
On Fri, 23 Jan 2009 18:28:34 -0800, simonvickers66 wrote:
Hi, I am going to attempt to re-tread a tubular tire, anyone got any
ideas about that? *What is the best way to remove an old tread and what
kind of glue will stick a new tread (from a clincher) to a casing.
I am hoping to remove a dried, cracked tread from a Challenge Cyclocross
tubular and then glue the tread from a Specialized or Kenda clincher
tire to the casing.
I have heard rumors that A. Dugast *performs this service and I have
seen some custom tubulars so I know it is possible. Cheers,
Simon


If the tread is dried and cracked, then the chances are that the exposed
sidewall is also dried out. Ditto for the latex inner tube. Even if the
polyester sidewall appears good, air and water may found their way to the
inner tube. You did say these were cyclocross tires, right? :=)

My first inclination is that you're wasting your time and money because
the inner tube may need replacement.

If the only thing that's bad are cracks on the rubber, try patching the
cracks with a modern day equivalent of Treadstop (the stuff never
worked). If no rubber is missing from the tread, you can use super glue
to hold the sides of the cut together. I've used super glue to repair
clincher tubes to repair pinholes near the valve. Once the cut holds,
leave the tire overnight to cure before applying pressure on the cut. You
can make small rubber plugs to replace divots.

However, be careful. Cracks in the rubber tread may also mean a slight
tear in the casing. You've got to inspect each one with a magnifying
glass. If you've got a tear in the casing, do you really want to boot the
tubular.

Stephen Bauman


Thanks for all the input. I have had the itch to do this for a while
and I am not worried about wasting the time or money. I did a crummy
job of storing some tubular tires when I moved out from the coast to
the desert and the tires are definitely spares and not race worthy.
Some of the tires have had their tubes replaced by Tire Alert even
though the casings are pretty beat. The tires I have left over hold
air but are pretty worn. Most of the racing I did on them was on
fairly dry and gravelly courses and they chew up the tires pretty
bad. I don't plan on racing these tires or even doing any serious
riding on them.
Anyway, I figure it's worth a shot and if I have any leaky tubes, I
will try to plug it up with Tufo sealant just so I can see how they
roll around.
Simon.
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