Hi folks,

I need a Stronglight 122 BCD chainring with 39 or 40 teeth to accommodate my vintage legs. It seems these are hard to come by and when available are expensive. If I can’t find one, I have several different BCD rings with the right tooth count and wonder if I could modify one to get 122 BCD. I checked 118 & 110 BCDs, but they won’t work. Haven’t had a chance to check others, like 130 & 135.The co-op where I volunteer, has a mill and a drill press that I could use for the mod.

Thanks & regards,

Van
AKA: Senior Ryder 00