I am trying to find a product that I know exists but I can't find. It is a Cantilever Post Adapter than screws into the original post holes and allows you to move them up about a 1/2". I want to modift my 650B frame to run 700C road wheels with 28c tires. The frame is a Velo Orange Polyvalent designed for 650B large volume tires.
I have seen these adapters for about $25 online (thought they were Paul Comp. or Problem Solvers), but was wrong. Does anyone have a link to these?
the frame:
Polyvalent MK3 Frame and Fork (which I want to be able to adapt back to large volume 650B in the future).