Originally Posted by
JohnDThompson
Cantilever brakes can be a bit trickier to convert from 27" to 700C. MAFAC cantilevers, for example, don't offer any reach adjustment for the pads. Shimano MC-70s have a few millimeters of reach adjustment, which may or may not be enough, depending on where the posts were brazed.
And the posts on this look quite narrow. But chances are that this was made for 700c it sounds like. Here's hoping at least; I'm away from home until late tonight so I can't check!