Technical & Reference Section > Tech and Restoration

Stuck seat post.....

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Steve Shindig:
So I have a painted alu pivotal post stuck in a normal 4130 frame.  It went in fine and then got stuck and I can't shift it.  Any ideas how to get this thing out please?  Thanks.

CD17:
I had this a few weeks ago on a 85 Performer, I soaked it every day with WD40 & it still would not move  :(

In the end I put the seat post in the vice & turned the frame, it came out  :angel:

& it did not fook the seat post  :)

motomagII:
buy some rust remover liquid water it down soak in it for short while .i did this and after ten mins it just slid straight out easiest stuck post ive ever got out .works a treat

ORB:
Hmmm, alloy and 4130

Rust remove wont do much as alloy does not rust!

I would plug up the hole in the bottom of the seat tube (inside the BB) and fill with Caustic Soda.


The caustic soda will eat away at the alloy. Do NOT breathe the fumes!

Steve Shindig:
Cool,. thanks for advise dudes, I'll try this caustic soda idea... this sounds like a good plan as I don't have a vice.

Cheers again. I'll let you know how I get on. So, Halfords for this caustic soda stuff?

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