Originally Posted by TrojanHorse
You mean that carbon assembly paste? Yes! Technically, you don't need it if your frame is also carbon, but I put some in anyway. My post doesn't slip. I don't think it's surprising you didn't notice at all, especially if it was happening over a long period of time.
By the way, Lennard Zinn says the worst case scenario for a seat bolt is stripping the threads if you over tighten it, even with a carbon seat post. (assuming it fits correctly) so don't be shy about tightening that bolt.
Leonard Zinn is wrong!
The worst thing that can happen if you overtorque a seatpost clamp bolt is the frame can be cracked (if the frame design did not take that into consideration), the second worst thing is that you can crack your seatpost clamp (which has happened to me). And that second one resulted because the frame, around the seatpost, was designed for that. The most inconsequential is actually stripping the bolt.
My advice is to use carbon paste, if appropriate, grease the seatpost clamp bolt, use a torque wrench or use the least amount of torque to actually hold the seatpost in place. I put a little red tape as marker on my seatpost to watch for slips, but none since I've been doing it a long time ago.
Last edited by Jed19; 08-06-12 at 05:34 PM.