Thread Size on Older Bike's Rack/Fender Mount
Hey, all!
I am coming around the final bend in my race to build my CCM Torino 76 into a sturdy all weather Afline 8 equipped commuter, and all that needs to be done now is to mount fenders and a rack. There are braze-ons aove the rear and behind the front dropouts, but they are obviously a larger diameter than the modern standard (M4?) for mounting racks, fenders, and water bottles.
I have found in the past that some BSOs have larger holes that are threaded, but don't know what thread size and pattern they were. Does anyone know what size(s) of bolt are likely to thread into an old frame like this? It is a Made in Canada CCM Torino '10 speed' from , I think, 1976.
I am going to try a few different sizes tonight, and I may just wind up going with an M4 or M5 with a nut, but if there is a more elegant solution I will be happy as a clam at high tide!
Thanks,
LASF