Joined: Dec 2004
Posts: 12,560
Likes: 799
From: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, Bacchetta Quattro, Catrike Speed
Yes, I had a set for a while. It took an unusual 144mm BCD for the rings, and the set I had was without rings; so I never got to try it out. The documentation recommended overgearing by 30% to take advantage of the cam effect. It's back with its original owner now.