Ultra Torque Pista Campagnolo Ultratorque Track crank conversion

Nice - I have a pair of Truativ Omniums on my track bike and they feel pretty beefy. Also have the Chorus carbon road set for the road bike. I can only see this as the natural progression for the track. Are the Truativ set not legal on the track or something?

BTW - Can you buy replacement bearings for Campag UT cranks anywhere? (planning ahead)

Truvativ/SRAM Omniums are fine for track use, although obviously not NJS! They're not easy to get since Planet-X ran out of the cheap stock they had a year ago, hence the Mirage hack. Total cost of the Mirage cranks + Goldtec ring + Stronglight single bolts + Record UT cups + milling by my local machine shop came to about £120, which is less than anybody is selling new Omniums for even when you can find them in stock.

The Campag UT bearings are available at a reasonable price as a Campag spare part, and at least one of the bicycle bearing shops (Boca Bearings)is doing them now, but they're not a normal common size. That ID/OD combination usually comes in a 7mm width, but the Campag ones are 6mm and you can't fudge the issue. Campag aren't just being wilfully proprietory here, they needed to keep the bearings as thin as possible to maintain the Q-Factor