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 Post subject: stuck seat pin
PostPosted: Mon Jun 11, 2012 3:04 pm 
Dirt Disciple

Joined: Mon Jun 11, 2012 2:50 pm
Posts: 11
Anyone got tips for a stuck seat pin , alloy in a steel frame?


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 Post subject:
PostPosted: Mon Jun 11, 2012 3:29 pm 
Dirt Disciple

Joined: Tue Dec 20, 2011 5:55 pm
Posts: 10
Hi,
Try boiling a kettle of water, pour the hot water on the frame at the seat tube seat pin junction,let it cool and it should come free that's what I did with my lemond ,although it was freezing outside at the time which no doubt also helped
Best of luck Fadec


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 Post subject:
PostPosted: Mon Jun 11, 2012 3:58 pm 
rBoTM Winner
rBoTM Winner
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Joined: Tue Mar 27, 2012 9:28 pm
Posts: 3104
Location: Mansfield Woodhouse, Nott's.
Try putting your advice in this section of the forum ! You may get more views.

http://www.retrobike.co.uk/forum/viewforum.php?f=12

Nothing worse than a stuck seat pin but there has been many many successful removals by many members.

I once removed a seized up seat pin by taking out the bottom bracket - putting a condom over the seat tube/pin then taping up the condom to
form a seal then pouring Coca Cola down the seat tube and left it for a week, then putting the saddle back on and it twisted freely and came out.


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 Post subject:
PostPosted: Mon Jun 11, 2012 4:31 pm 
Retro Guru
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Joined: Fri Sep 05, 2008 10:34 pm
Posts: 1513
Sometimes a sharp tap downwards with a hammer can free it enough to get it moving....once it's moving, it's yours!

Only do this if it's quite a way out though, not if it's well in the tube...and do it at your own risk, etc....
:0)


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 Post subject:
PostPosted: Mon Jun 11, 2012 9:42 pm 
Retro Guru
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Joined: Wed Apr 25, 2012 2:08 pm
Posts: 2186
Location: Shrewsbury
I've done quite a few, but generally, few are truly siezed. Boiling water is a good start. If you are getting any movement at all, even a fraction of a millimetre, it will come out eventually. One thing that often gets suggested which I would avoid! Is clamping the stem in a vice and using the frame to twist out the stem. I've seen this cause paint fractures and it will strain the lugs in a way they are not designed to be strained. If its definitely stuck, this is the simplest, quickest way:

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

Good luck :)


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 Post subject: Stuck seat post
PostPosted: Mon Jun 11, 2012 10:11 pm 
Retro Guru

Joined: Wed Nov 04, 2009 9:57 pm
Posts: 641
Warm the seat post - hot air gun is ok -this will expand and push the seat tube out as it cools spray with plus-gas or similar.

if its really stuck, and the frame is being re-painted , get the gas welding plant out, thats how frame-builders do it !!!


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 Post subject:
PostPosted: Mon Jun 11, 2012 10:41 pm 
Retro Guru

Joined: Sat Jan 07, 2012 11:16 pm
Posts: 805
Location: North London
try this page:

http://www.sheldonbrown.com/stuck-seatposts.html

seems to cover most angles


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