Stuck seat post

Pigeons in flight

Hello,

i have had a Planet X carbon bike for about 2 years. Set up the seat post height when I first got the bike and haven't adjusted it since. I've recently bought a carbon seatpost to replace the original Planet X aluminium one but have just discovered that it is stuck! I mean really stuck, not budging a millimetre when I loosen off the seat post clamp and try and rotate it backwards and forwards holding the saddle. It's like it's been soldered into the frame.

Any thoughts for loosening it?? I thought of squirting WD40 around it, but I'm not sure that would be a good idea.

cheers

Bunneh

GT85 around the seized area, leave it an hour, come back and wiggle it. Reapply some more GT85 and leave it again, then come back and wiggle - you get the idea. Apparently WD40 is very bad for chains, but not sure if that's the case with carbon frames so can't really comment on that.

redddraggon

WD40 would work fine.

WD40 is not bad for chains, it's just not a chain lube.

Pigeons in flight

Thanks guys. I will report back.

Radioactiveman

http://www.parktool.com/repair/readhowto.asp?id=172

Depending on frame design may be better to remove the crank and BB then apply a release agent of your choice .

Suppose you could leave the saddle on and whack it with a rubber hammer in an amount to shock it free

Failing that you could cut the seatpost off and carefully cut longitudinally down the shaft until it is possible to twist the shaft and break it free.

My advice is whatever you do take your time and be fully prepared to accept writing off your seatpost at best and at worst the frame

Pigeons in flight

Blimey...that's a bit of a scary post radioactiveman!

Right, glad to report no frame write offs required - an hour with a few liberal squirts of WD40 , some elbow grease to get the post moving and robert's your dad's.

Cheers for the help.

Bunneh

redddraggon wrote:

WD40 would work fine.

WD40 is not bad for chains, it's just not a chain lube.

Just somethign I saw

http://bicycletutor.com/no-wd40-bike-chain/

Meh, sorry my brain's really not working at the moment. anyway the video's interesting anyway.

bexley5200

wd40 just bodge it with a hammer