I recently installed a set of 52/36 Q-Rings onto my Cervelo S2. For the life of me...I can't get a good shift onto the big ring. This setup was on a different bike using a clamp adapter...and the shifting was great. Now that I moved it onto my Cervelo...it will not shift properly onto the big ring. It shifts fine on the stand...soon as I get on the bike and shift...the chain will feel like its not catching onto the lift pins. Chain is slipping on the back of the large chainring.
I have the limit screw set at the limit...any more it will pop the chain off onto the crank.
I have the FD setup as per the Rotor instructions. They mention a "shim" has anyone actually used that?SRAM Braze-on Front Derailleur washer for compact crank - www.neuvationcycling.com
I had a 53/38 round rings before and that shifted fine.