I've been sorting out the 1950 Claud Butler I picked up from Peter Naiman at Larz last year. I note that it uses 1/8" chain. The Cyclo plunger-type RD and evn the steel rings on the Duprat cranks look like they would handle 3/32" chain, but the 4-speed FW cogs are definitely too thick. When did 3/32" chain come into general use? Were there any 4-speed FW's made to handle 3/32" chain.
This bike also is geared too high for much hill climbing with a 14-23 FW and 51-49 rings shifted by a Cyclo rod-type FD. Anyone have a 26 or 28T 4-speed FW or 42T or smaller chainrings to fit the old three arm cottered steel Duprat crank? Looks like the same circle as old Strongliight steel cottered cranks.
Regards,
Jerry Moos
Houston, TX