Originally Posted by
John E
Many Simplex shifters had absurdly small capstan diameters. Look for a different shifter, which may require a clamp-on mounting bracket (been there ... done that with my 1980 PKN-10), with a larger capstan.
Originally Posted by
Podagrower
YMMV, but I picked up an 80's bike with downtube shifters, Shimano 105 6 speed indexed. They had enough cable pull to handle a 10 speed cassette, but I did drop the coin for the Dura Ace shifters above.
Yeah, I was kinda hoping for <20eur old-school suntour or campy shifters, for my "old heavy" Bianchi Sprint 76!