Stuck seat post?

[Zagor]

Hello I just got hold of an old vintage road bike that might or might not become a project for the months to come.

To my surprise I notice what it seems like a stuck seat post inside the frame.

However it is at least 9-10 cm deep inside the tube and does not prevent the new seat post from sliding in. My questions for you:

a) how the heck have they managed to do that??
b) is there a way to remove it? I‘ve seen plenty of advice on how to remove a ‘traditional’ stuck seat post but in this case I cannot tell whether it will be more or less difficult!

I included some pictures for reference! Thank you!

 

[mdvineng]

Caustic soda method. The tube will need reaming as it has deformed from previous attempts at removing the post.

 

[hamster]

I agree, no way you'll ever get a tool in there to remove it. And reaming will be essential to get any replacement seatpost to stay put.

 

[ZG862]

a) how the heck have they managed to do that??

Wiv u ammer (and not many grey cells).

 

[pigman]

Re:

The tube looks deformed which will continue to present seatpost problems.
Edit - Someone above has already said that, must read properly next time

 

[Nob]

Unless it is sentimental to you or some kind of rare frame Worth the time & effort... personally I wouldn’t bother & look for something else....of course you can experiment by chucking down various chemicals down the seat tube & see what happens

 

[Imlach]

Probably not worth it with the deformities around the seat tube. But caustic soda is an entertaining experiment to get rid of any nasty aluminium. I recently used to remove a very thick and long stuck seat post, what you've got in there is like a light lunch for the caustic soda. Pour it in and listen to the beautiful sizzle while you crack open a beer or two. Therapy. Just remember to wear PPE and don't drink too many beers.

 

[droppedout]

Caustic soda will only work if the seatpost is made of aluminium.
Just reaming would leave you with no lug wall.

Get a long hacksaw blade and attach it to a wooden handle and approach the task slowly and carefully.
To reform the seat lug support it properly and hammer it gently and gradually with a hardwood drift and something like a one inch socket inside it, changing the size of socket as the shape returns. Or put it in vice grips and form it from within.

 

[Zagor]

Re: thank you

Thanks guys a lot of useful (and entertaining) opinions!

My view at the moment:

After a quick research on the internet caustic soda method feels a bit too dangerous, plus I’m not sure if it’s aluminium or steel. Maybe I’ll do it if I get bored and just to see what happens. At the moment it is causing no problem so it can stay there.

Reaming: at the moment the seatpost is pretty solid but will probably give it a try if not too complex. I would be great if anyone has got a link to a nice tutorial / description of the process

Thanks and have a great weekend!