Originally Posted by
tandempower
Thanks, Brad. Now I just have to figure out how to remove the cup, whether the crank set is assymetrical enough to warrant spacers, and if so what kind of spacers to use and how, and what you mean by equalizing L&R thread width.
Most cartridge BBs are symmetrical and many cup and cone BBs aren't. Tread width is the distance between the L&R crank arms, sometimes referred to a Q factor. While tread width won't change, you may need to equalize the L&R spacing of the crank arms with shims on the drive side. I could've worded my previous answer better.
Brad