Planet X Stealth stuck seatpost

DaveyL
DaveyL Posts: 5,167
edited February 2009 in Workshop
I'm assembling my Planet X Stealth TT bike, and the seatpost got stuck the first time I put it in the frame. I used the Tacx carbon assembly compound on the seatpost, but maybe there was some dust or dirt inside the frame, I should have checked but didn't. Anyway, as I put the seatpost in, it felt extremely tight, and sure enough I can't move it at all to get it back out (and it's not down to the height I need).

Any suggestions? It's an aero "teardrop" shape post.
Le Blaireau (1)

Comments

  • disgruntledgoat
    disgruntledgoat Posts: 8,957
    Not sure of it's properties on carbon fibre... But if there's a bond Plus Gas can't break, i don't wanna meet it.
    "In many ways, my story was that of a raging, Christ-like figure who hauled himself off the cross, looked up at the Romans with blood in his eyes and said 'My turn, sock cookers'"

    @gietvangent
  • LangerDan
    LangerDan Posts: 6,132
    Don't have the Planet X TT frame, but have had a similar issue on a different make of aero post. The fit was so snug that it took two of us to get the post out. The trick I found was to gently place a precision-machined tapered piece of unobtanium alloy* into the clamp to force the sides of the clamp apart and loosen it somewhat.

    * Note- if you don't have a precision-machined tapered piece of unobtanium, you can always jam in a screwdriver instead
    'This week I 'ave been mostly been climbing like Basso - Shirley Basso.'
  • Steve928
    Steve928 Posts: 314
    Sorry can't offer much help, other than to point out that the Stealth has a substantial alloy insert into which the seatpost fits inside the carbon frame - so it's not carbon to carbon.

    The alloy on mine had a few rough edges and burrs which I cleaned up before putting the post in for the first time. If yours has and you didn't then I can imagine they would grab the post pretty well..

    I have the opposite problem - my post creeps down.
  • DaveyL
    DaveyL Posts: 5,167
    Thanks for the replies chaps. After my post I did actually go back and give it another shoogle (the seatpost that is), this time forward/back, rather than side-to-side, and managed to work it loose.

    I'll check everything is smooth this time and use a bit more carbon assembly compound.

    LangerDan, I don't have unobtanium alloy, but I do have some of the pure metal...
    Le Blaireau (1)
  • Monty Dog
    Monty Dog Posts: 20,614
    Sounds as though the seattube might benefit from a pass with a reamer or at least a hone to remove any roughness - for the sake of a visit to your LBS, I'd let them check it out - seatpost should slide in without the need for excessive force
    Make mine an Italian, with Campagnolo on the side..
  • DaveyL
    DaveyL Posts: 5,167
    Steve928 wrote:
    Sorry can't offer much help, other than to point out that the Stealth has a substantial alloy insert into which the seatpost fits inside the carbon frame - so it's not carbon to carbon.

    The alloy on mine had a few rough edges and burrs which I cleaned up before putting the post in for the first time. If yours has and you didn't then I can imagine they would grab the post pretty well..

    I have the opposite problem - my post creeps down.

    There doesn't seem to be any insert in my frame!
    Le Blaireau (1)

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