That's some serious drivetrain anality you have there. I wouldn't worry about it as the differences will be pretty small. If you're really keen then I would drop a bit more hard earned and get a Phil BB, since the cups let you adjust the chainline. Then you're not tied in to one brand of cog to satisfy your drive train accuracy requirements.
That's some serious drivetrain anality you have there. I wouldn't worry about it as the differences will be pretty small. If you're really keen then I would drop a bit more hard earned and get a Phil BB, since the cups let you adjust the chainline. Then you're not tied in to one brand of cog to satisfy your drive train accuracy requirements.