Removing stuck or seized seatpost?

11 days?! Perseverance indeed!

As my frame's gigantic (62cm-ish) and the post's near the bottom of its range, I reckon I'll leave it until the post fails, if ever. Hope I'm not riding fast if it does ever crack...

Recently attempted to remove an alloy seatpost seized inside an old steel frame.

Tried all the usual methods but nothing worked, not even a budge, so I ran out of patience and pulled out the power tools.

Hacked off the top and found there was about six inches inside that had to be dealt with.

Was able to ream it so the walls of the post were no thicker than 2mm.

Thought it could just slide out now, with a bit of twisting or rolling it inside itself as Sheldon describes.

Still nothing. After nearly 30 years the frame and post were fused together.

Eventually got it out after a bit of chiselling - make that* a lot of chiselling*.

This method is effective, but not recommended, especially on a frame you care about. The potential for damage is quite high.

If only I knew about caustic soda.

Next time.

nice one , but to all with the same problems , i would not recomend caustic soda becasue it take alot of time and fucks up your lungs. but if its your only option go with it

I went to adjust my seatpost today and it is completely and utterly stuck, I even hit it with a hefty hammer that I borrowed from some guys that were doing some building work and it did not budge after a few meaty whacks. The position is actually ok, I was only going to move it up 5mm anyway so it's not that big a problem. The only way I could think of ever actually getting it out should I need to would be to drill through it and stick a metal pole through and twist, this is obviously a bit drastic if there may be another less destructive way of getting it to move, any suggestions?

Visit your LBS and borrow their vice?

what material is your frame and what material is the seatpost.

If only this had ever happened to someone else - then you would be able to search for previous threads...

Use a negative shim and it'll slide right out.

If only this had ever happened to someone else - then you would be able to search for previous threads...

Thank you, you mean the one that suggested melting it out with caustic soda? Yes I had read it and was wondering if there might be a way of moving it and actually have some seatpost left when I was finished. BTW you know you're allowed to post stuff about bikes on here as well as correcting everyon else's errors.

Use a negative shim and it'll slide right out.

Waiting on new stock to come in actually, got some NJS ones on the cheap, should be arriving next week, hopefully customs don't sting me.

Oh yeah, steel frame, steel post as far as I'm aware, I'll just check though...

Thank you, you mean the one that suggested melting it out with caustic soda? Yes I had read it and was wondering if there might be a way of moving it and actually have some seatpost left when I was finished. BTW you know you're allowed to post stuff about bikes on here as well as correcting everyon else's errors.

That right is it? Well here you go from last September, you lazy twat...
http://www.londonfgss.com/newreply.php?do=newreply&p=382653&stripquote=1

Thank you, you mean the one that suggested melting it out with caustic soda? Yes I had read it and was wondering if there might be a way of moving it and actually have some seatpost left when I was finished. BTW you know you're allowed to post stuff about bikes on here as well as correcting everyon else's errors.

he never gives advice or speak from experience, all he does is correct peoples grammar and makes really obscure, dry jokes that maybe 5 or 6 actually get. that's what he does. that's all he does.

just don't -rep him or he'll hate you forever.

This happened to the missus' bike not so long ago and none of the methods I've read worked, so I got a 7 foot long sash cramp (woodworking thing) and gripped it with that, and with an unpleasant cracking noise it came loose.
...the point being that it's good to get something with a fucking long lever, like wedge a broom handle under the saddle and then twist the bastard, or maybe turn the bike upside down, get a fat mate to stand on the saddle and then twist the rest of the bike.

surely there must be something!!!
in the same old situation

This happened to the missus' bike not so long ago and none of the methods I've read worked, so I got a 7 foot long sash cramp (woodworking thing) and gripped it with that, and with an unpleasant cracking noise it came loose.
...the point being that it's good to get something with a fucking long lever, like wedge a broom handle under the saddle and then twist the bastard, or maybe turn the bike upside down, get a fat mate to stand on the saddle and then twist the rest of the bike.

Me and My dad used a huge vice attached to a bench, with one of us at each end of the bike giving it some welly until it came loose.

Thank you, you mean the one that suggested melting it out with caustic soda? Yes I had read it and was wondering if there might be a way of moving it and actually have some seatpost left when I was finished. BTW you know you're allowed to post stuff about bikes on here as well as correcting everyon else's errors.

That right is it? Well here you go from last September, you lazy twat...
http://www.londonfgss.com/newreply.php?do=newreply&p=382653&stripquote=1

Now you see what you have done there is linked me to a quote that says 'hacksaw through the seatpost horizontally and vertically'. As you will see from my quote above I would like to have a usable seatpost after getting it loose. See underneath for a friendly bit of useful, unabusive advice.

This happened to the missus' bike not so long ago and none of the methods I've read worked, so I got a 7 foot long sash cramp (woodworking thing) and gripped it with that, and with an unpleasant cracking noise it came loose.
...the point being that it's good to get something with a fucking long lever, like wedge a broom handle under the saddle and then twist the bastard, or maybe turn the bike upside down, get a fat mate to stand on the saddle and then twist the rest of the bike.

Me and My dad used a huge vice attached to a bench, with one of us at each end of the bike giving it some welly until it came loose.

Shit, if you don't want to risk buggering up your saddle, take it off, and put something else in it's place that you can grip onto.

if you have the time (7-10 days), strip the BB, invert the frame, fill it with a little diesel and wait. Its evil stuff. Allegedly made from dead animals. Oh and scaffolding poles and an old saddle, obvnov.

he never gives advice or speak from experience, all he does is correct peoples grammar and makes really obscure, dry jokes that maybe 5 or 6 actually get. that's what he does. that's all he does.

You remind me of those skinhead guys that would try to beat me up for being 'different'. I see them occasionally when visiting family - prematurely aged and basically defeated by life, and all for the want of a refusal to learn.
Quite sad, I suppose, but I'd be lying if I didn't admit to a certain frisson of schadenfreude.
I know you won't mind me saying this

frisson of schadenfreude.

I am one of the five or six

You remind me of those skinhead guys that would try to beat me up for being 'different'. I see them occasionally when visiting family - prematurely aged and basically defeated by life, and all for the want of a refusal to learn.
Quite sad, I suppose, but I'd be lying if I didn't admit to a certain frisson of schadenfreude.
I know you won't mind me saying this

not to get involved in your love-in, but you've clearly never met lpg. x

I am one of the five or six

I'm not but sometimes I like to pretend.
[ame="http://www.youtube.com/watch?v=XDW2BzJPtsE&feature=related"]YouTube
- One in a Million -Hannah Montana[/ame]

not to get involved in your love-in, but you've clearly never met lpg. x

Judging by his attitude I wouldn't want to.
DISCLAIMER: I do realise that some people can't do the internet. Cf Paul-Michel, OOL, Torpid Construct, etc, etc BLANK, etc, BLANK,etc...

Fucking hell Andy, you're in the club, yessir...