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PostPosted: Wed Sep 26, 2012 7:04 pm 
PoTM Winner
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I have an ally campagnolo seat post stuck in a steel frame.

I have started with wd40 and the post rotates a bit so it is not totally seised.

Any tips for getting it out?


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PostPosted: Wed Sep 26, 2012 7:16 pm 
Gold Trader
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if it rotates, then get someone else to hold the frame while you twist and pull on the saddle, it should come out OK (but probably a bit scratched)


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PostPosted: Wed Sep 26, 2012 7:19 pm 
PoTM Winner
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Any value in warming the seat tube with boiling water?


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PostPosted: Wed Sep 26, 2012 7:19 pm 
PoTM Winner
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Any value in warming the seat tube with boiling water?


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PostPosted: Wed Sep 26, 2012 7:44 pm 
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I think the purpose of heating with water, hot air etc is to use the
expansions and contractions of the different metals to break the bonds
between them - so if the post is not completely seized then there's no
need to apply extra heat.

Good luck,

Johnny


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PostPosted: Thu Sep 27, 2012 9:50 am 
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If you have movement it will come out. You could remove the saddle, clamp the end of the seat post in a vice and twist the frame off. Keep squirting the WD40 as well :)


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PostPosted: Thu Sep 27, 2012 11:07 am 
PoTM Winner
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It's out :D

The lower sections have some manky corrosion caused by the ally to steel interface.

Ant tips for cleaning that up?


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PostPosted: Thu Sep 27, 2012 11:17 am 
Old School Hero

Joined: Sat Jul 07, 2012 5:22 pm
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do not apply heat!

aluminium expands faster than steel, so all you'll do is make it worse.

there's loads of methods including dry ice, caustic soda, amonia, hack saws, but they're all pretty horrible.

edit: well done ^ :)


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PostPosted: Thu Sep 27, 2012 11:33 am 
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bg2 wrote:
do not apply heat!

aluminium expands faster than steel, so all you'll do is make it worse.

there's loads of methods including dry ice, caustic soda, amonia, hack saws, but they're all pretty horrible.

edit: well done ^ :)



Ahhhh, actually its often quite successful, the fact that the aluminium expands helps break the corrosive bond so as it cools you start to get a bit of movement.......hopefully :)


Last edited by Robbied196 on Thu Sep 27, 2012 12:17 pm, edited 1 time in total.

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PostPosted: Thu Sep 27, 2012 11:34 am 
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Montello wrote:
It's out :D

The lower sections have some manky corrosion caused by the ally to steel interface.

Ant tips for cleaning that up?


I'd use some fine steel wool and more WD40 :)

Oh, and grease it before you put it back :lol:


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