Removing stuck or seized seatpost?

good shout. thanks

http://www.lfgss.com/thread84111-2.html

christ - not sure I'm up for all that!

Caustic soda and patience.

Find a friendly mechanic with a floor mounted vice, bolt the seat post into it with the frame in the air and use the frame to get it out. Worked perfectly for me and they did it for free but I gave £5 out of good will.

http://mendabike.co.uk/

I"ve tried vinegar once on a stuck stem but it didn't work so I gave it away. Then that person used some kind of hardier acid and it worked. I can't remember what sort of acid it was though.

You need soemthing to dissolve the Al oxide.

http://mendabike.co.uk/

Second that- good job, very cheap too!

Ok, carbon fibre seatpost stuck in a thin-walled alloy frame.

Suggestions for removal techniques?

(This bike is for sale on eBay, I'm wondering whether to bid).

Has this been removed yet?

Ok, carbon fibre seatpost stuck in a thin-walled alloy frame.

Suggestions for removal techniques?

(This bike is for sale on eBay, I'm wondering whether to bid).

That SystemSix? Looked a bit of a mess to me.

Popping it in a jig and reaming it out was my first thought.

That's the one, I've been given slightly conflicting advice recently about what size bike I should be riding, and that's a 56 that I suspect might go cheap due to the post.

Reckon it would be easy enough to get out?

No.

But you could sort it out if you really wanted to.

Hmm. You think it's stuck in place by corrosion?

Frame seems to have corrosion where you wouldn't really expect it - on the drop out for example. Theres quite a bit of corrosion around the mouth of the seat tube suggesting to me that yes it's corroded in.

The dropout corrosion is going to be due to clamping the QR I'm guessing- my clearcoat has flaked away in this area due to that.

My frame is not suffering from this*, but I imagine that the seatpost area corrosion has come from the seatpost clamp stripping off the clearcoat there.

And, quite possibly, the owner living beside the sea side and riding in the dead of winter.

*I know.

My dad has a 2007 boardman team alu with full ultegra that now has a seized seatpost, hes tried wd40, considering the vice method, is there anything to be careful of?

Plusgas?

'IF' its totally seized then use a Hacksaw blade. There's a link below, that one must be about the 20th seat post I've had to cut out.

Forget trying to twist out in a vice, if its truly seized the frame can bend before the post moves.

http://forum.ctc.org.uk/viewtopic.php?f=5&t=63229&hilit=siezed

I bought a Peugeot frame at the weekend,http://www.lfgss.com/thread104545.html
arrived this morning.Now to get the seatpost out.

that'll be the easy bit

I bought a Peugeot frame at the weekend,http://www.lfgss.com/thread104545.html
arrived this morning.Now to get the seatpost out.

Current projects thread please - I'd love to see how you fix it

And any other horrors you may find in the process.

I was hoping to push it out with an air chisel,has worked before.The vibration helps to release the bond between steel & aluminium,oh well,out with the drill.It is far to well in there for a sabre saw.

Drill & then adjustable reamer & its out,just need to tidy the clamping bracket now.

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Just hoping I would not need to use caustic soda/hacksaw method on mine: http://www.lfgss.com/thread104378.html

So far GT85 has removed the BB and the front brake. Will give GT85 a few more days then Plusgas. Then ice/dry ice into seat tube method if both fails.