Originally Posted by
sam83
Said it was the cups, not the bearings. Fulcrum. Original install was there on a new frame as part of a build up. My impression is that they are an experienced group.
Many bottom brackets come as a cups/bearings set... and the cups don't wear out the bearings do.
If the bottom bracket does not have perfectly parallel faces then you will shorten the life of the bearings. Many 'experienced' people do not realize this and claim that external bbs are always tight when new and need to break in... well often the tightness is caused by misalignment and the 'break-in' is actually the beginning of the bearings wearing out.
Have your bottom bracket faced.