Technical & Reference Section > Tech and Restoration
Removing alloy post from alloy frame
jT Racing:
vice trick works, but you need something to put in the top of the post to stop it crushing and help it bite.
oldschoolace:
My favourite trick is to drill a hole in the seatpost big enough to put a decent sized allen key through. Drop the seatpost in a vice so the frame is upsidedown and the allen key runs parallel to the jaws. Then tighten the vice til its snug on the tube. When you turn the frame the tube usually wants to slip but the allen key prevents this and gives you better torque.
Never tried it on a ali frameset yet but its worked on all the steel frames i have had :daumenhoch:
ozone:
Check out Sheldon Brown for advice on posts stuck because of galvanic corrosion. He reckoned (RIP Sheldon) ammonia will dissolve it if you're looking for a chemical solution.
http://sheldonbrown.com/stuck-seatposts.html
The tried and trusted methods for steel on steel used above just don't cut it when two lumps of aluminium have fused together.
An 80s racer frame I had this problem with was bending when I had clamped in a vice as the bond is that strong. The frame would either have cracked at the lugs or bent in half if I kept trying to turn it out that way.
http://sheldonbrown.com/stuck-seatposts.html
Discostu:
You can't use that method as it will also eat away the alloy frame. :daumenhoch:
leehunt1:
--- Quote from: gavindavis on March 26, 2013, 03:25 PM ---Tighten and old stem around it and use a tube for a bit of leverage on the quill.....worked for me :)
--- End quote ---
You shouldnt drink in the afternoon Gavin.. :crazy2: :LolLolLolLol:
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