Join Date: Jun 2001
Location: living in the moment
Bikes: 2005 Litespeed Teramo, 2000 Marinoni Leggero, 2001 Kona Major Jake (with Campy Centaur), 1997 Specialized S-Works M2, 1992 Specialized Rockhopper
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i can't coment on the chorus bb, but the centaur ac-h bb is a pretty fragile piece of hardware. it might work well enough on the road, but the stresses of cyclo-cross are a bit too much for it. i went through three in one season. the problem is that water and grit get into the frame, and tend to weaken the adhesive that bonds the drive side cup to the bb body. quit simply, the bb fall apart.
the biggest problem, though, is in the square-taper spindle. you put a lot of load on the cranks when you drive through the mud, and they have a habit of coming loose, sometimes even in the middle of a race, no matter how hard you have the cranks torqued down. the square taper also makes for a pretty mushy bb, which is something you will notice in a race.
yo can only use campy bb's with campy cranks. better to go with an after-market product like the truvativ elita or the fsa gassamer cross crankset with an isis bb.