Aluminium Seatpost stuck in Carbon Frame

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minley1
Posts: 113
Joined: Fri Apr 06, 2012 16:05 pm

Aluminium Seatpost stuck in Carbon Frame

Postby minley1 » Tue Oct 28, 2014 15:00 pm

Hi,

I know there are various posts on this, I have a KCNC Scandinium Seatpost, it's been in the frame since January 2013, and was installed with some carbon paste.
It is stuck fast, with the seat clamp totaly released there is no movement whatsoever, I have tried pouring coke into the frame, but the BB shell is sealed, so I had to pour it through the bottle cage hole, no joy so far, any tips?

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The Rookie
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Joined: Thu Apr 30, 2009 09:29 am

Re: Aluminium Seatpost stuck in Carbon Frame

Postby The Rookie » Tue Oct 28, 2014 15:14 pm

Ammonia (household cleaner style), dissolves aluminium oxide (see Sheldon Brown) worked on my sons carbon frame with seized ally seatpost.

We wrapped kitchen roll around the joint, then duct tape around that to make a 'funnel' and then kept topping it up, doing it from below it's likely you are just filling up the inside of the seatpost with nothing getting to the joint.

minley1
Posts: 113
Joined: Fri Apr 06, 2012 16:05 pm

Re: Aluminium Seatpost stuck in Carbon Frame

Postby minley1 » Tue Oct 28, 2014 15:18 pm

Do you mean Kitche Foil rather than Roll?

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nicklouse
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Re: Aluminium Seatpost stuck in Carbon Frame

Postby nicklouse » Tue Oct 28, 2014 15:18 pm

read the info on Sheldons pages.

and it might be a case of pushing the frame rather than pulling the seat post.

read the info on sheldons ways to remove stuck seat posts.
"Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown

lpretro1
Posts: 230
Joined: Fri Apr 02, 2010 13:47 pm

Re: Aluminium Seatpost stuck in Carbon Frame

Postby lpretro1 » Tue Oct 28, 2014 15:50 pm

This guy does a fantastic job: www.theseatpostman.com/
:D

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The Rookie
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Re: Aluminium Seatpost stuck in Carbon Frame

Postby The Rookie » Tue Oct 28, 2014 16:14 pm

minley1 wrote:Do you mean Kitchen Foil rather than Roll?

No, Kitchen roll, paper absorbent stuff, it acts as a filler so the tape makes a funnel shape and also stops the ammonia spilling out to easily if you do something silly!


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