Generally speaking, switching from 700c to 650B on any cantilever-equipped bike is considered a very bad idea, with two exceptions: 1. you have a poorly placed set of canti-posts so that they manage to work OK 2. you have a frame builder remove and attach your canti posts in the right place for 650B
If your canti posts are in the right place for 700c, you need to run your brake pads a full 19mm lower to hit 650B rims. That's practically even with the pivot itself and the leverage just doesn't work well at all Generally speaking, switch from 700c to 650B on any 700c bike with large BB drop is considered a risky maneuver, with two exceptions: 1. you don't mind a really low BB and pedal strike doesn't concern you 2. you are going to MUCH wider 650B tires, so that the resulting BB height may be close On disc-brake bikes, swapping from 700xTHIC to 650xTHICCC is pretty common. I've got a few bikes in my stable that are intended for that kind of flexibility. My cantilever-Sam is not one of those bikes. 700x38 + fenders and it's perfect. For beefier tires, I grab one of my machines that has beefier tires Bill Lindsay El Cerrito, CA On Saturday, October 2, 2021 at 10:08:08 AM UTC-7 brenton...@gmail.com wrote: > Hi all, I have a Sam Hillborne without canti posts. I was considering > trying 650b hoops to get some even beefier tires on the bike. Has anyone > seen it done? Pics? -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/805627c9-7418-45fc-8d24-b138d1c80f66n%40googlegroups.com.
