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Seat post slippage

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  • April 14, 2011 at 8:42 am #13308
    nellybuck@msn.com

    The seat post on my commuter refuses to stay put; it continually slides down into the seat tube after a couple of km of riding.

    it’s the original seat post that came with the bike, and has only started relatively recently, but is getting really annoying now as it prevents me taking the bike on any longer rides as I’d be stopping every few minutes to readjust it.

    Any ideas?

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  • April 14, 2011 at 3:17 pm #642543
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    nellybuck@msn.com

    Thanks guys, will give that
    Thanks guys, will give that paste a go. It is the original seat post and clamp; the only thing I can think of is that I may have damaged something when I crashed quite heavily last year.

    April 14, 2011 at 1:57 pm #642541
    0
    cat1commuter

    +1 for assembly paste stuff
    +1 for assembly paste stuff with plastic particles. The increase in friction is amazing.

    For your seatpost, clean out the inside of the seat tube first. I used a bit of rag pushed inside a loop on the end of some thick wire.

    April 14, 2011 at 9:56 am #642539
    0
    PlatosCarriage

    Coke-can shim! I can attest
    Coke-can shim! I can attest to its continuing usefulness, having an old Peugeot frame which no modern seatpost will fit. After a couple of comedy chin-on-the-top-tube moments I found three coke-can wraps to be perfect for me.

    Be brave and good luck!

    April 14, 2011 at 9:18 am #642537
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    j1mmy76

    You’re using the right size
    You’re using the right size seat clamp?

    April 14, 2011 at 8:57 am #642535
    0
    dave atkinson

    I’m assuming it’s the right
    I’m assuming it’s the right size for the bike and you’re tightening up the seatpost bolt, a couple of other things you could try are:

    1) Pace’s excellent carbon composite shield grease, which contains particles to grip components together and stop them slipping;
    2) A shim cut from a coke can

    the pace grease you can get at http://www.chainreactioncycles.com/Models.aspx?ModelID=26768

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