Joined: Feb 2012
Posts: 19,373
Likes: 5,516
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
The SunTour index systems of that era did use different cog c-c dimensions and different lever/der movement ratios then Shimano. Chains and cables will interchange. I have done a few system conversions to Shimano, a bunch more with friction thumb levers and a lot with just cleaning and tuning with a fresh chain. Andy.