Originally Posted by OldBlueJeans
I purchased a new Trek 5200 (9 sp) a few years ago and had the dealer upgrade the B/B and crank to Dura Ace. After 6,500 miles the B/B started "clacking" away and I pulled it only to find one of the needle bearings was missing. So I replaced the bearing cups. Now, after another 6,500 miles I find the whole B/B is worn out. I have heard of other complaints about Dura Ace B/B's coming loose or wearing out quickly. It seems to me these things ought to last more than 13,000 miles.
I am curious how many other people have experienced this. Also, the Campy Record seems to have much smoother bearings. But I wonder if they last longer?
OldFreeWheel
Are you talking about the 7700 octalink one with the adjustable cups, or the 7703 triple version with a non-adjustable cartridge or the newer 7800 one. Just curious, I'm usining the 7703 triple cartridge and I've had some issues with corrosion on the spindle after 3000 miles but my bearings are tight and smooth so far.