Thread: Blown tubes
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Old 08-12-12, 10:16 AM
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Blown tubes

We're touring on a tandem with a trailer and have been plagued with blow outs. 3 of 4 occurred when we were heading down from a pass. Two were big blowouts, 8" rip on the tube and blew out the bead on the tire. Two were at the valve stem on heavy duty tubes. All tubes were 700 x 28. The big bow outs were at altitude, 8000' and 6000'. Don't know if it's tire pressure, I pump up the tires with a hand pump every couple days, or if the rim is getting too hot and causing the tubes to blow? In the cases of the two big blow outs we were just starting down the passes and the blow outs occurred in the first 1-2 km. Also we have a drum brake to assist and I had it on both times.
Appreciate any insight or suggestions.
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