Originally Posted by cs1
I don't have a set of 7 speed barcons now. I was wondering if you could alter the very common 8,9 or 10 speed versions to accept 7 speed. I know friction is an option but I'd rather have indexing if possible. Being a Campy user I am unfamiliar with the Shimano spacing system for their cassettes. Thanks for the info on the 8 speed systems.
Tim
Shimano spacing for 7-speed systems: 5.0 mm.
Shimano spacing for 8-speed systems: 4.8 mm.
You should be able to get away with indexing 8-speed bar end shifters on a seven-speed freewheel or cassette. This is what I'm planning to do with the 8-speed shifters that I just bought.