Originally Posted by
Scrodzilla
That's a weird one and without having the bike right in front of me, I may not be able to give you an answer.
I've actually never had any trouble with my Sugino 103mm BB - or even various Shimano UN54 BBs ( which are considered by many as "cheap") - so it's hard to say. The only thing I can think of off the top of my melon is that the mismatched crank arms have different Q-factors and it's putting some kind of strain on one side of your BB. Either that or your BB shell was never faced properly and the BB spindle isn't sitting in there perfectly straight with the BB installled. I would probably start by chasing the BB shell.
Because I've never had issues with "cheapo" BBs (except the damn GXP that came with my Omniums), I don't really have an opinion of why pricey BBs are better.
Thanks alot for your rs.
Yeah, a good mechanic/guru friend of mine made this suggestion as well. Originally, I had a matched set of Bulletproof cranks, but the NDS cranks rounded out in pretty short order, so I replaced it w/one I picked up at a co-op nearby. Have sold off one of my vehicles(going car-lite+...got a scooter, sold the pick-up), so I've got some extra coinage. Plan on getting a matching set of Sugino 103mm bb and RD-2 crankset.
I think it's either what you and my friend spoke of or my stroke is off a little. That would explain similar problems from 2 different bbs. Thanks again.