I've ridden with my super from work a couple of times. He rides a Cervello. The BB sounds like someone threw a handful of rocks in it. He's had it in the shop 2 or 3 times for said noise. Each time it's quiet for maybe 45 minutes or an hour, then it rears its ugly head again. Any ideas on what it might be? BTW--he's not just a casual rider. He does tri's and Iron Man.
Thanks.
Jon

I worked at a Cervelo dealer for several years. The BBRight and BB30 bikes (30mm spindle) generally require regular maintenance. Typically if the bike is equipped with the wavy washer to take up the extra slack between the crank arms and the bearings and the bike is used on the trainer a lot (gets sweated on) or gets ridden in wet weather, the spindle walking within the bearings tends to make a lot of noise. I made a video about a year ago with some tips on keeping this set up silent, but the best method I've found so far is replacing the BB for an outboard style that adapts to shimano 24mm cranks or SRAM GXP 24/22mm spindle cranks. Wheels MFG, Kogel and Praxix make decent options.

LM,
Thanks. I'll show it to him tomorrow.
Jon