Cyclocross - Seat post slipping

Following a move to the countryside I have just recently purchased a Spec Crux and I am just getting use to riding bridleways and firepaths and being shaken about.

My querry is about the the seat post. The bridelways I am cycling have been rutted by tractors and are pretty rough to cycle, today was excetionally rough going and I noticed that my seat post had slipped. This may have been because I had fiddled with it earlier on in the ride, because I think that it had slipped from the previous ride and had not tighted it enough, but it may not. My question is, Is seat post slippage something had I should expect following rough riding

Is there anything else I should keep any eye on following a rough ride

Tighten the clamp more and/or add some friction paste.

Is seat post slippage something had I should expect following rough riding


Cyclocross races require a flying remount, at a full gallop,
many times an hour, a typical race length, so the seatpost had better not slip down,
JRA on a casual ride, on a horse trail.

If it does , return to the Dealer and talk to them..

Tighten the clamp more and/or add some friction paste.

I've been having a problem with this myself, despite tightening the clamp as much as seems possibly safe (and cleaning the post). What is this friction paste?

Thanks for the advice.

Have applied Fiber Grip from Finish Line and think I have tightened it significantly more than before, will find out on tomorrows ride. It states tighten to 6.2, but I don't have a torque guage so have been doing it by feel.

I think I also have new bike syndrome, whilst my mind says tighten it and ride it, its a bike and meant to be ridden hard off road, part of me still thinks it I might break it.

I'd suggest you invest in a torque wrench. Clamping down carbon parts is no place for guessing. There's a cheap and nifty little tool you can get, but the ones I've seen only have 4mm bits and click at 5 Nm (though that's probably good, even though Speciailized says you can go higher).

You can get a cheap torque wrench fron Harbor Freight for around $15: http://www.harborfreight.com/1-4-quarter-inch-drive-click-stop-torque-wrench-2696.html

If nothing else works including taking it back to the store where you bought it, try using a seatpost that is 0.2mm larger in diameter.
This worked for me.