I bought a Miyata 610 frame and fork for my wife. It currently has side pull brakes. I would like to set it up as a 650b bike with Cantilever brakes. I have done 1 conversion already and it seems that in order to make the front brake work it requires extra long reach brakes. It did it on mine and am only so so happy.
So I was wondering about having cantilever posts added . Is there a minimum diameter seat stay required?
Thanks!