Bad news for me, the bearings in my bottom bracket went bad and scored the shaft of the crankset, so it looks like I'm in for some expensive repair, unless the bike shop that I got it from will cover it under warranty. I haven't approached them yet.
The equipment specifics are Dura-Ace 7803 crankset and Boca Dura Ace full ceramic bearings.
I got this bike in April '08 and in that 30 weeks have ridden almost every weekend, on the average 100 miles with 4,000 feet of ascent. This problem became evident on my last ride, in which I encountered rain, so I suspect dirt got splashed up onto the crankset and somehow found its way into the bearings.
Am I right in thinking that even with that considerable usage, that this premature wear? Would improper installation by the bike shop be a likely cause?
I haven't done any maintenance on the bearings in that time, like taking them out and cleaning & lubing them. Was that a mistake?
Ceramic bearings are nice for reducing friction, but are they a lot less durable than steel?