Chuck Schmidt wrote:
>
> 1966 - The Record 5-pin cotterless ROAD crankset changed to
> 144 mm bolt circle (Ted Ernst). Minimum chainring 41 tooth.
Shouldn't this say minimum chainring 42 tooth? I believe the 41s didn't appear until much later, 80s? You can't even use a newer 41 tooth chainring on an older bike unless you also use a newer-style chain, or modify the cranks - the taller sideplates of old chains would impinge on the spider arms.
Mark Bulgier
Seattle WA USA