old seatpost stuck down seat tube!

perry · Sep 3, 2009

dont leave it in there , thats just shoddy . the powder coater will blast the frame as a matter of course and itl trap the blast media used

http://cgi.ebay.co.uk/10-STAINLESS-STEE ... 286.c0.m14

Dead Rats · Sep 3, 2009

perry":1xxkermk said:
dont leave it in there , thats just shoddy . the powder coater will blast the frame as a matter of course and itl trap the blast media used

http://cgi.ebay.co.uk/10-STAINLESS-STEE ... 286.c0.m14

I know it's shoddy but I doubt the forceps will work.. it's too jammed in.. are 10" needle nose pliers available?

hoegaardenadds1 · Sep 3, 2009

yep:-

http://www.halfords.com/webapp/wcs/stor ... yId_165469

Andy R · Sep 3, 2009

Since the frame is going to be media blasted and repainted anyway why not use caustic soda?

dyna-ti · Sep 3, 2009

good idea Andy

It might at least remove enough metal to clear the narrow section of the tube

If you are going to leave it in then id secure the post first then clean and paint

Dead Rats · Sep 3, 2009

dyna-ti":1kujav60 said:
good idea Andy
It might at least remove enough metal to clear the narrow section of the tube

which might allow it to drop out

:?:

mikesnowdon · Sep 3, 2009

From this website:
http://www.sheldonbrown.com/stuck-seatposts.html

"Aluminum seatposts frequently become stuck by corrosion also, and penetrating oil is almost useless against aluminum oxide. Fortunately, aluminum oxide can be dissolved like magic by using ammonia."

dyna-ti · Sep 3, 2009

Good ol' Mr Brown

Dead Rats · Sep 4, 2009

Hail Sheldon once again!
will that work better than Sodium Hydroxide?

Andy R · Sep 4, 2009

Dead Rats":3181075l said:
Hail Sheldon once again!
will that work better than Sodium Hydroxide?

Ammonia will only dissolve the aluminium oxide - it probably won't help in your case though, as you want to actually dissolve the aluminium. It's not as if you have an intact seatpost that is just seized because of an oxide build-up.

Sodium hydroxide will do that, but work outside and wear safety glasses and good rubber gloves.

old seatpost stuck down seat tube!

perry

Dead Rats

hoegaardenadds1

Andy R

Senior Retro Guru

dyna-ti

Dead Rats

mikesnowdon

Senior Retro Guru

dyna-ti

Dead Rats

Andy R

Senior Retro Guru

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