I'm looking at doing something to keep my sanity this winter. A 650B conversion sounds good. Who can build up a set of 650B wheels if I supply the hubs? I have a set of solid axle 84-86 Specialized hubs for a 6 or 7 sp conversion. Those axles won't break for flex even on a 130mm spaced bike.

Seems like most pre built wheels are 135mm spaced. I'm looking at a set for a vintage bike with either 126 or 130mm spacing.