Your help or advice sought here: I am putting together for riding a Geminiani bike from the sixties (I believe, or maybe the fifties). It has one shifter braze-on for the rear. The shifter which came with the bike was a 60's Campagnolo. After switching rear derailleurs, playing with chain length, switching cables, I could not stop the shifter from loosening and dropping the derailleur into a higher gear. Finally I took the shifter apart and noticed that the braze-on peg (the do-hickey where shifter bolts screws into) was round as opposed to rectangular or square on others. That, to this spatially handicapped one, suggested that the washers in the shifters, the ones with the rectangular cutout in them, were not and could serve their purpose.
My question or questions are: does this round braze-on require a specific type of shifter that differs from the Campagnolo? If so, what kind of shifter is required? And where does one get one? Or am I doing something completely backwards and overlooking something real simple?
Thank you very much.
Cheers.
Tom
Tom Hayes
18585 Munn Road
Chagrin Falls, Ohio 44023
hayesbikes@nls.net
hayes@jcu.edu