Stuck seat post....

[Herzog]

or damaging any brazed joints.Aluminium expands more than steel,so as you apply heat,the post gets tighter.

You're right, didn't see if was an alloy post.

 

[Shut Up Legs]

I doubt you will get this out.
Before you damage the frame and yourself, look up your nearest frame builder. Where do you live?
Frame builder charge £20 to remove these - they have special tools for the job and experience too

I'm thinking of the same approach, because the seat post on my Vivente tourer/commuter is also stuck. I haven't been in any hurry to do anything about it, because I only wanted to move it down about 5mm, but eventually I'll get around to getting it unstuck...

 

[simon the viking]

I'm thinking of the same approach, because the seat post on my Vivente tourer/commuter is also stuck. I haven't been in any hurry to do anything about it, because I only wanted to move it down about 5mm, but eventually I'll get around to getting it unstuck...

glad I'm not the only one!

 

[tyred]

Drill the bugger out,then ream it to clean it up.You can pick up a drill bit at a boot sale,find a friendly machine shop to turn it into a blacksmiths drill,&away you go.Caustic soda is messy,time consuming,& rocks the paint.

I wouldn't do this with access to proper machine shop tools and knowledge of how to use them.

A seat post will be at least 1" in diameter. That is a very large drill bit, expensive to buy and difficult to use without the correct drilling equipment.

A diamond framed bike is not the easiest of things to clamp in a typical pillar drill vice either.

 

[simon the viking]

I wouldn't do this with access to proper machine shop tools and knowledge of how to use them.

A seat post will be at least 1" in diameter. That is a very large drill bit, expensive to buy and difficult to use without the correct drilling equipment.

A diamond framed bike is not the easiest of things to clamp in a typical pillar drill vice either.

Don't worry tyred, removing it myself by drilling wasn't going to happen.... but thank you for your concern if it doesn't free itself through riding with collar use then its getting left as is!

 

[HLaB]

I take it you've tried rotating (clockwise, anti clockwise, clockwise etc) as you pull.

 

[simon the viking]

Tried Yes.... succeeded No....

 

[simon the viking]

Keep the suggestions coming please folks one might work.......

 

[HLaB]

Tried Yes.... succeeded No....

Thought you might have. I've not touched my Viking seatpost for a while (also alu/steel) but I thnk now I've sorted my saddle I may need to drop it by a couple of mm and I'll be looking forward to that fun

 

[simon the viking]

The annoying irony is that I replied to someone on a motoring (arggghhh motoring sorry I swore) forum to make sure they greased up alloy valve caps as they can corrode on..... If I only I had heeded my own advice

 

[simon the viking]

Just ordered some Comma frost bite release/freeze spray its due in this afternoon...... I keep pretending I'm not bothered really.... but clearly I am!

 

[grumpyoldgit]

I wouldn't do this with access to proper machine shop tools and knowledge of how to use them.

A seat post will be at least 1" in diameter. That is a very large drill bit, expensive to buy and difficult to use without the correct drilling equipment.

A diamond framed bike is not the easiest of things to clamp in a typical pillar drill vice either.

I own a fabrication shop with about 20 staff,so I think I might have a clue what is what.
As I said before,buy a taper drill at a boot sale,drills this size sell for little more than scrap value,get it turned down to fit in a 3 jaw chuck,this is called a blacksmiths drill.One man holds the frame,another drills at very slow speed,took about 5 minutes to get the last one out.
If Simon is near Egham during the working day,he is welcome to drop in.

 

[grumpyoldgit]

Just ordered some Comma frost bite release/freeze spray its due in this afternoon...... I keep pretending I'm not bothered really.... but clearly I am!

If you go this way,warm the outer tube with a hairdryer before chilling the alloy seat post,might just help.

 

[simon the viking]

I own a fabrication shop with about 20 staff,so I think I might have a clue what is what.
As I said before,buy a taper drill at a boot sale,drills this size sell for little more than scrap value,get it turned down to fit in a 3 jaw chuck,this is called a blacksmiths drill.One man holds the frame,another drills at very slow speed,took about 5 minutes to get the last one out.
If Simon is near Egham during the working day,he is welcome to drop in.

Thank you for the kind offer but sadly no I'm not near you, or I would've been knocking on your door

 

[e-rider]

Thank you for the kind offer but sadly no I'm not near you, or I would've been knocking on your door

so are you near a frame builder? tell us your location - this could have been out by now for £20 and no hassle!