A listmember helped me locate a Bianchi "B" chainring to use on the 1949 Cambio Corsa. I was planning to use it with a Magistroni cottered crank, but it hadn't occured to me that it would be anything different than the Magistroni (128mm?) BCD.
Ooops.
Turns out it's smaller - looks like 98mm (is that correct, anyone?). So now then, what are my options for steel cottered crank arms to fit the chainring? Is that a Bianchi proprietary size? What's the BCD on other B-rings in our group?
Thanks for any information.
Aldo Ross
Monroe, Ohio