To grease or not to grease

[pigman]

My next project is to build a modern summer bike (not retro, sorry)
Do I grease a carbon seatpost into a carbon frame or assemble it dry?

 

[66 triumph daytona]

Re:

Ive never used grease on a carbon post.3 of my bikes have carbon posts with a tiny bit of carbon assembly paste.To be honest Im not even sure the paste is necessary.

 

[mattr]

It might creak or slip without assembly paste.
Grease might have some unfortunate side effects. Depending on the post/frame finish or any scrapes, scratches or if you've trimmed the post. (Unlikely with anything modern)
The frame might also have a metal shim in it.

 

[pigman]

Re:

Seatpost is lacquered carbon, inside of frame is naked carbon, no shims

 

[mattr]

Bit of assembly paste then. Won't hurt.

 

[pigman]

Re:

Ok cheers, I'll look it up - never heard of it ( not a carbon expert)

 

[mattr]

There are loads of brands who do it
I've got this.
http://www.finishlineusa.com/products/s ... iber-grip-

Any LBS should have something similar lying around on the shelf.

 

[dyna-ti]

Re: Re:

Bit of assembly paste then. Won't hurt.

Seatpost is lacquered carbon, inside of frame is naked carbon, no shims

Just a wee point there, just so its out there, but if the inner frame is unsealed, will the assembly past bleed into or contaminate the raw carbon ? :?
Could it affect it in the long run ?.

 

[mattr]

Nope.
IIRC most of them are water based, so won't do anything to carbon. (but do need reapplying on occasion, if you do a lot of riding in the wet.)

 

[Nob]

Carbon paste always to stop slippage or layers of Harmony Hairspray as another option