Originally Posted by
showlow
No screws in the BB shell. It's a single speed setup so I took the cable guide off. The exposed threads don't really bother me. I was just wondering if I should do something about it or not.
...the purpose of those installation cups on a sealed unit like yours is to go in far enough that the tapered inner circumference of the cup fixes the casing of the sealed unit firmly in place within the BB shell. When you put the crank arms on, grab them and see if you can feel any movement when you rock them perpendicular to the plane of rotation.
If not, you're in deep enough and good to go. If you feel some movement, back the thing out and start over.