Originally Posted by
ironwood
650B was not a new size, it is an old French size that was eclipsed by the 700C size.....
I knew it wasn't new, just a revival of an obsolete size.
My point is that there are really no truly NEW sizes available since the ISO size range goes from 137 to 637 mm with practically no significant gaps. About all that can happen is someone trying to drag out something old and make it "the next big thing".