Slipping seatpost

Max_Man

The seatpost is slipping down on my new Specialized Allez Elite, it's a carbon post in an alu frame.

I've tightened the collar as much as I dare and it still slips (it even rotates).


Any ideas?

Smokin Joe

Try some Tacx Carbo Assembly Paste. You can also get a collar that fits on the post and prevents it slipping. Pro teams use them in Paris-Roubaix.

I don't know who sells the collars, but Probikekit supply them with their own carbon seatpost.

spivvy

Tacx Carbon Assembly Compound seconded & you can probably ease the torque on the collar.

http://www.competitivecyclist.com/road- ... e_388.html

jeffcapeshop

how tight should one tighten a carbon seatpost out of interest?

Gav2000

I actually have a reflector on my carbon seat post which sits up against the frame. It adds a small amount of grip to stop the post from slipping down.

Gav,.

spivvy

I use a small allen key and make a guestimate I'm afraid.

Slow Downcp

jeffcapeshop wrote:

how tight should one tighten a carbon seatpost out of interest?

Without a torque wrech, just enough to stop it slipping

Try a dab of hairspray on the post - once it dries it sticks quite well.

lochindaal

I had the same problem and there is a solution on the FAQ of the specialized website (sorry don't have the link handy). Basically though it tells you to mark the correct seat height with tape. Use 200-400grit sandpaper and rub the inside of the seat post and also the carbon post below your tape mark.

Put the seat post back in using chalk dust to ensure it goes in smoothly. Tighten to correct setting.

SDince doing this I haven't had a problem.

Max_Man

Thanks for the advice guys, the hairspray worked....