Seat post will not extract

[scooter01]

I was at my LBS last night f or a club meeting, one of our club members has a Scott Carbon frame with a Thompson seat post that is seriously stuck.

The shop has not been able to remove this post, they have tried liquid wrench WD 40 and and a lot of muscle. The current plan is to cut the post and slide a hacksaw blade within the post to cut it from the inside out. I really cringe at this idea! A quick call to some fellow forumites to help find another solution.
I am thinking a heat cycle ( small torch) and or a freezing cycle (dust off co2 )

may work.

Any other other suggestions would truly be welcome.

[jemoryl]

Maybe immerse the aluminum part sticking out in some liquid nitrogen? Know anyone that works in a chemistry or physics lab?

[M.Sommers]

Hacksaw blade by hand, just the blade.
Lubricant.
Patience.
Time.
Cut down, in, check work every few passes.
It works and is the last resort.

And the fool who owns the bike deserves a smack in the arse. Here:

http://www.circleacycles.com/chris/wp-content/uploads/2007/08/library-1836.jpg

Talk to stevep and e-RICHIE. Then have the dude call swoop for some mental advice. By then he'll the dude will be nuts for sure.

[jvp]

sell it advertized w/ "integrated seat post".
I removed one seatpost by using a throw away saddle, securing it solidly, and twisting the frame around. But that was a steel frame...

[Big Dan]

C clamp.

[Chris]

pepsi

[Tom]

Ammonyur. Werks grate. Amoolinum hawks ides. Ammonyur absolves it.

[rwsaunders]

Did you try an ice pack around the post?

[zmudshark]

pepsi+1, or coke.

[Acotts]

I am going to re-grease all my posts tonight!

[flux]

Stick the bike upside down and mount the post into a heavy duty vise. Twist the frame. The risk of doing this is that the post twists and snaps off.
I would not recommend sawing the post from inside out as a few saw passes into a carbon frame is not the same as a few saw passes into a steel frame.

Good luck and please let us know the outcome.

[stevep]

call it a day.
get a new one.
they are not that much money anyway.
im basicly serious here too.

and always, always grease the post w/ the new carbon paste.
i dont care what any website says.
light grease wont hurt carbon.

[Ahneida Ride]

TRY Ammonia


The problem is Aluminum Oxide. Ammonia disolves this ....

Now this make take days .... Just keep dripping Ammonia
down the seatpost and tube. It will come out with NO damage.

This is a Sheldon Brown Trick ... and it works.

Be patient !!!! ;)

Opps ... I just saw the frame is Carbon .... Now I don't know ....

[pdxmech13]

what flux said.
or find someone that has a machine shop

[jemoryl]

Yeah, the ammonia trick is worth trying before saws and other brutality.

[Pete Serotta]

I have seen this happen on quite a few bikes.

One of them the guy put the post in the bike and used the frame as the lever to keep turning to break free. Luckily that was all that broke. That was a carbon frame with an aluminum sleeve in the seat tube.

Take out every season at least.... and that might not be enough

[Clydesdale]

but good advice here...

seatpost removal (http://www.sheldonbrown.com/stuck-seatposts.html)

[Dan Le foot]

A BIGGER HAMMER
Dan

[thwart]

but good advice here...

seatpost removal (http://www.sheldonbrown.com/stuck-seatposts.html)

I miss Sheldon... straightforward advice with a touch of humor embedded.