Grease for carbon Seat post . Post broke on removal

Mrdeece

My carbon seat post was stuck into the frame (The frame is Alu) and broke when trying to free it. I used all the usual tricks by heating the frame with a hair dryer, using WD40 and leaving over night. I eventually got it out by using a vice. It saved the frame but the seat post was damaged, fibres all broken. On close inspection I could see that the Carbon fibre resin had welded itself to the seat post. I was originally told not to use any anti seize grease or any grease on carbon parts at all. However I not so sure this was good advice. I am now looking for a special grease or anybodies ideas of what they have used. I see that Pace sell a "Carbon Compound Shield Grease" but I think this is for stopping a seat post from slipping rather then to stop the post seizing in the seat post. I would like a solution for my two bikes one is alloy and the other is a full carbon bike. Both seat posts are carbon.

Smokin Joe

I use Tacx Carbon Assembly Paste. As well as preventing the post from slipping it provides a barrier between post and tube just like grease does on metal.

nicklouse

so info here:
http://www.bikeradar.com/forum/viewtopic.php?t=12534958

but discus with the supplier of your new seat post as there is differing thoughts.

meagain

Finest olive oil - OR take it out and clean/dry once every couple of weeks. And after every wet ride.

Mrdeece

Thanks for the replys. Nick The link was really helful. Thanks

Philip S

Yeah, that's a useful link - conscious that I hadn't moved my seat post in the 6 months I've owned my bike (carbon post and carbon frame), I took my seat post out last night and found that it felt like it was lightly greased, but also had a fine gritty feel to it. It wasn't even remotely stuck, but I wasn't entirely sure whether it had been greased or if the grit was just dirt that had found its way in there. Sounds like it has been greased with something like the Scott grease...

blorg

I have never greased a carbon seat post and have had three of them in carbon, aluminium, titanium and thermoplastic shim without any hint of sticking. In the carbon and aluminium for up to a year without moving. nicklouse's link above suggests residiual grease might be an issue- I have been careful to clean this out when swapping from an alloy to carbon seatpost (just using a rag). Just my experience, YMMV.

campagsarge

I use Ritchy Carbon grease that i bought from Merlin Cycles but I now cannot find it on their website. I have a spesh Pave seat post in an Alu frame and take out t he seat post every four weeks to make sure every is ok.

mcmikeec

Same problem with my bike (Scott Speedster)- the carbon seat pin was bonded to the frame and as a result needed to get a new pin. The bike was only 2 years old so I complained to the bike shop (where it was being serviced at the time and where it was originally bought). I asked why I should need to pay for a new pin if the wrong grease had been applied when the bike was assembled. I won my argument and now have spanking new Ritchey carbon fibre seat pin - the lesson learnt...keep it moving ever so often so it doesn't bond like loctite!!!

rohloff-rich

Ritchey, Tacx and Pace stuff is all pretty much the same, and yes it is used to prevent slippage but in doing so also prevents seizure.

Grease (or olive oil for that matter :roll: ) should not be used on carbon as the carbon can expand with the moisture from it, as what seems to have happened to this stuck post.

Apparently bees wax does the same job as the carbon paste, but I know which I'll be using and relying on when my new carbon post arrives! 8)