Originally Posted by tkatzir
There's a good thread going on in the Bicycle Mechanics forum
Finding tube leak
I'd like to know your ideas (and experience) on how to find a leak in the tube during a randonnee, at night, in the rain, after a few hundred km's...
Until now, luckily, all my flats didn't stop me from riding (none was during a randonnee.)
They were slow leaks, and didn't prevent me from getting home, and patching them calmly.
I've ridden about 4km on entirely deflated front or rear tyres. Not ideal, but it is surprising how far you can go to get shelter (in this case, my office) to do the repair job. You do have to be careful not to dent the rims, of course. But tubes and tyres didn't really suffer...
The last time was a rear flat, and I rode 5km -- the first 3 on a seal surface, then the last 2 on a rough gravel road... at night. The tyre was cactus with split sidewalls, but it was 15 years old and was fitted to the bike when I collected it from the rubbish dump.
Finding shelter is a good thing. Having a good head torch is a good thing. Having several spare tubes in your kit is a good thing. Patience in finding the cause of the puncture before inserting a new tube is a good thing. Having a pump that will inflate to your preferred riding pressure is a good thing.
NOT finding the original cause of the puncture is a bad thing. Having a tube of cement that has evaporated all its solvent is a bad thing. Leaving your patch kit at home and having gone through all your spare tubes is a disastrous thing.
Other than that, read my tip in the thread you quoted.
Last edited by Rowan; 09-19-06 at 01:35 PM.