Does anyone have a new or nearly new Suntour Winner Pro A 17 cog? Evidently, I use this gear a lot, since I have three such cogs, all of which slip with a new chain.
This cog will be used in my almost complete secret derailleur project on my '73 Ron Cooper. I have achieved shifting Nirvana (aside from the cog) with a retro look, using a '91 Campy Record derailleur (nice exposed upper and lower pivot bolts, sprung upper pivot, brass bushings, ball bearing jockey wheels), 7-speed Winner Pro freewheel (the rear was spread previously to 126 mm), DID Daido SuperLight chain, and Shimano downtube shifters. It indexes perfectly (but there is a secret involved, which will be disclosed to the person with the cog).
Louis Schulman
Tampa, Florida