Originally Posted by
gugie
I'm in Portland, Oregon, and have done a few dozen 650b conversions. I've had people come over to do a wheel fit, if you were close enough I'd offer the same. There are several BF C&V posters here that have that particular tire size on their bikes. Where are you located?
Hey, that could be awesome! I'm in Foster-Powell. I'll PM you.
Originally Posted by
Dfrost
Read this:
650B Conversion Guidlines
A pretty good approximation for the wide spot on a 650B wheel/tire set is the outer rim edge on a 700C wheel, which is only 4mm inboard from a 27” rim edge.
If you’re converting 27” to 650B, watch out for brake reach issues.
Thanks for the info! I've been through that document a few times. I think these guys are right though, I'd be best off having a real set of wheels/tires on there to have a look. Also, not that I obsessively went over the photos of that built-up Tempo, but I definitely found out those are "dural forge" MAFACS on it, which take a 650b with Hetre with some over-extended reach. I'll likely go with R559s for my project -- they have more reach than Racers, if i recall. Think they should do the trick.