Originally Posted by
mountaindave
Anybody do a 650b conversion on a classic Trek with 38mm tires under fenders?
Bridgestone RB-1 650b conversion?
No pics for some reason, but I can get Soma B-Lines on there. They claim 38mm, but are closer to 36mm. True 38's would require your dimpler.
I've heard there is a fence somewhere, but gugie knocked it down... I'm not sure why anybody rides clinchers under 35mm.
Last year I started with the uglyrm 650b wheels for the RB-1, then bought a vintage 650b set to convert a bike for my friend (she loves it), then built a 650b set for the Trek. It happened to be the very first pair of wheels that I built myself and there are more 650b sets to come!
At first I thought all these 650b conversion people were nuts... now I can't find any of my marbles...
Sweet. Which model Trek is this? Looks like you topped out at 36mm. I thought that 38mm was sort of the gold standard for conversions since that gives you the same diameter as 700 x 19c? Although it's hard to imagine 2 mm making a big difference.
I especially like the way you have the zeal hp pump mounted. That can be an issue with older bikes that lack a pump peg. How did you macgyver that?
How fat a tire can you fit on a RB-1? I'm skeptical that you can get close to 38mm on a racing bike.