Joined: Feb 2012
Posts: 19,381
Likes: 5,527
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 classic chain length determining is to place the chain in the big/big and add 1 or 2 link pairs. I've always tended to go longer if all works well, as you can always shorten the chain easily, if needed. Actual length is a factor of cog/ring size, der, cage design, pulley wheel size, hanger length, chain stay length AND the rider's ability to stay out of cog combos as needed. Andy.