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Glue on beaded tires?(4 posts)

Glue on beaded tires?Boer
Mar 29, 2001 8:59 AM
Recently I'd been given an old Trek that had been used for some minor racing. (I'm a Bike magnet!) I fix them up and give them away when the basement gets loaded. In fixing a flat it appears that there was old glue residue on the tire bead holding it to the rim, does anyone know what type glue could be used? I use 100psi tires on my touring bike and change to lower pressure tires during the hotter part of the summer because I have a lot of blow outs from the heat and was wondering If the glue was someone's answer to that..

If you know drop me a email, thanks.

CCB
that's weirdDog
Mar 29, 2001 9:15 AM
My bet is that it is not glue on the rim, but rather decayed tire rubber. I've never heard of glue being used with clinchers.

Doug
Doug's right--sometimes the rubber sticks. Or maybe...Cory
Mar 29, 2001 9:32 AM
...a friend used to ride deep sand a lot around Mojave, Calif., and he says they'd sometimes lower the tire pressure to 15-18 psi (no rocks to run into, so no pinch flats). To keep the tires from moving on the rim, they'd glue one bead. But that was on mountain bikes with the fattest tires they could get in there. Can't imagine doing it with a road bike.
Not likelyKerry Irons
Mar 29, 2001 3:19 PM
As Doug said, what you are likely seeing is just the old rubber of the tires sticking to the rim. Just curious, though, how do you know that you get "a lot of blow outs from the heat". By blow outs, I assume you mean that the tire is blowing off the rim due to high pressure. The only time I've heard of blow outs from the heat is either from heavy braking during descents or from leaving the bike in a VERY hot place. For example, if you inflated your tires to 100 psi at 70F and then they heated up to 140F, the pressure would only rise to 113 psi. That should NOT cause a blow out, as tires typically have a lot more than 15% "over-pressure" cushion built in. If you are really getting blow outs from this small pressure increase, it suggests that there is either something wrong with your rim (a bend in the side wall would significantly reduce the pressure the tire could hold) or you are using tires that don't match the rim (hard to do in this day and age unless you have very old or very odd rims)

If you could find a glue that would stick to your tires without damaging them and simultaneously stick to the metal of the rim, it would probably give you a lot of trouble when it came time to remove the tire. An example of this would be tubular tire glue, which seems like a generally bad idea for clincher tires. I'm guessing that you've got something else going on.