Join Date: Jul 2005
Location: Northern Illinois
Bikes: Normal Ones
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Q factors, even on Campy are much larger then they were 50 years ago. I haven't heard anyone claim that this is progress. Anybody no any more?
External BB cups are solution for a non-problem. They do cantilever the bearings outside of the BB, which puts unusual forces on the bearings. So... testing has shown that expensive ceramic bearings in external BB cups manage to return the rolling resistance down to that of a decent old-fashioned ball and cup internal BB.
That said, marketers have the public convinced of the need so I'm going to try to order some Omniums from my wholesaler. Assuming he follows through, I'll give you feedback on our experience.