Joined: Feb 2012
Posts: 19,349
Likes: 5,466
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
Chain width of both 7.1mm and 7.3mm are claimed to be 8,7,6 speed specs. But .1mm (from center of the cog/chain fit up) is a very small dimension. I wonder if worn parts (pulley bushings, index detents, der pivots, cable route friction) are the larger issues at play. BTW Uniglide cogs are a bit wide, in function, as the Twist Tooth design takes up space and has sharp tooth tips at the edges of the cog width dimension. There's a reason that HG tooth profiles are narrowed at the tooth tops. Andy