Joined: Feb 2012
Posts: 19,353
Likes: 5,471
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 best way to determine this kind of stuff is to try the cranks on a known BB axle and see what might be able to be made "better" with a different BB. In theory a BB axle that's 5.5MM shorter then current will be expected to change the chainline by about half the length difference. But a little tolerance drift, wear, or other variables can make chasing down these last few MMs impossible without testing. Andy
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AndrewRStewart