carbon seat post slipping

[ginaleah]

I have a new bike that has a carbon seat post. After adjusting the seat once, I noticed that the seat post was greased by the shop that put my bike together. I realize after some reading that a carbon seat post should not be greased. My question now is how do I clean it and how can I adjust the seat post to make sure that it stops slipping? It is SO annoying to go on a ride and have the seat gradually sink throughout the ride!

[Becky]

Carbon frame or aluminum frame?

[Eden]

It's not necessarily grease - it might be friction paste. I had a problem with seat post slippage (carbon post in a Ti frame) until I got a tube. It's worked like a charm, no more seat post creep.

[ginaleah]

Carbon frame or aluminum frame?

It's a lightweight steel frame w/carbon seat post and fork.

[ginaleah]

What's a tube?

[Eden]

A tube of friction paste (it looks a lot like grease with a bit of grit in it).

[ginaleah]

A tube of friction paste (it looks a lot like grease with a bit of grit in it).

Thanks! I'm gonna try it!

[dianne_1234]

I have a new bike that has a carbon seat post. After adjusting the seat once, I noticed that the seat post was greased by the shop that put my bike together. I realize after some reading that a carbon seat post should not be greased. My question now is how do I clean it and how can I adjust the seat post to make sure that it stops slipping? It is SO annoying to go on a ride and have the seat gradually sink throughout the ride!

1. Clean post and inside frame with alcohol or acetone.
2. Apply Tacx Carbon Assembly Compound (or equivalent) to post and inside frame.
3. Grease the seat post binder bolt, threads and shoulder too.
4. Use a torque wrench when tightening the seat post binder bolt.

Possibly some or all of these were done before.