Sean & Chris, I didn't have to dimple the chainstays, but I did have a local builder add canti posts at 650b height. I will say that the clearances are tight both at the fork crown and the chainstays, but there's about 3-4mm of space left in both places. I haven't measured the actual tire width, but I'm guessing the fact that they're mounted to Velocity Dyads is keeping them from pumping up to their full 54mm stated width.
Related to wheel diameter, a big concern of mine with this conversion was dropping the bb too low, especially given my intent of riding off road. I am getting a bit of pedal strike on rocky trails, but I'm just having to pay closer attention to my riding technique and not blowing over the terrain. I used this website <https://www.bikecalc.com/wheel_size_math> to crunch wheel diameter numbers before I committed. I was running Snoqualmie Pass tires before, so 700x44 = a wheel diameter of ~710mm. Now with 650x2.1, it's ~690mm. When I thought about the conversion dropping the bb 2cm lower, I also took into consideration that the bike likely wasn't designed around a 44mm tire, and probabaly a 35 or 38mm tire, which has a wheel diameter of ~696mm. So while it's 2cm lower than where I had it, it's not really much lower than it *would* be if I had 700x35ish tires. All in all, these are approximations, and I just went for it. The bike is very, very cool and I think I'm having the most fun on a bike I've had in a while. I'm amazed at how fast and fun the ride is. I attribute it to great frame design and great tires. Erik On Saturday, June 29, 2019 at 11:31:45 AM UTC-4, Sean Kline wrote: > > Hi Erik, lime Chris’ question, do you know how much wheel cm you gained > going to 650b? What what was your wheel diameter before and after? > > Thanks, > Sean -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/49318ca7-0d61-4a1d-98ce-922697c41fcb%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
