Unlike some measurements on a bici, tube and clamp diameter is a true measurement. Just put a caliper on it.
Can't help you with the rest of it, but size is easy.
Unlike some measurements on a bici, tube and clamp diameter is a true measurement. Just put a caliper on it.
Can't help you with the rest of it, but size is easy.
Speed comes from what you put behind you. - Judi Ketteler
I seem to be seeing a bolt head where there usually wouldn't be one. Thus I think you have a "braze on" style mounting for your FD. But it also looks like you have a clamp. So - perhaps you have a clamped on "braze on" mount? If so, this digression is moot because you could substitute the whole thing with a clamp style FD.