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Actually there was a solution if your friend was feeling especially generous and willing to help.
You can mount a sewup on a 700c clincher rim. I learned this trick from some early triathletes. Triathletes have to support themselves including fixing their own flats unlike bike racers who have mechanics, team cars etc. Some triathletes ride clinchers but carry a sewup for a spare. When they flatted it was quicker to rip the old tire off and put on the sewup than to pull out the tube, look for what caused the puncture, air up the tube a little, stuff it in the tire, them mount on rim. Of course there will be no glue on the clincher rim so no hard cornering but it will definitely get you home.
When I went on rides with one sewup and one clincher I usually just took a sewup for a spare. Works great.
Edited by: GIANT-STEPS at: 8/12/2009 (13:35)
What do you want to know?
Every rider should know how do #2 - fixing a flat. On Sunday morning we stopped to help someone who had a flat. He didn't have the tools, tube, pump or skills. It turns out we didn't have the right stuff either - I was running big knobby tires that day and my other mate were on tubulars so that guy was stuck. He had two choices: a) walk 20k back to the carpark or b) trash his rim and limp back on a totally flat tire. Had he known how to change a flat and had the kit to do it, he'd have been done in 10 minutes.
Every rider who rides in the rain should know how to do #1. Even those that don't should know how to clean the bike and oiling chains is included in that.
In God we trust, all others bring data.
- W. Edwards Demings
If God invented marathons to keep people from doing anything more stupid, the triathlon must have taken Him completely by surprise.
Specificity, specificity, specificity.
The plural of "anecdote" is not "data".
- Frank Kotsonis
Bike Washing Skills
Changing a Flat
C0-Team leader of Change is Good and Half Marathon Team, Support panel of The Best Life Diet