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  1. #1
    mtbr member
    Reputation: skinl19's Avatar
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    Jan 2004
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    F29 seatpost slipping

    My F29 seatpost has been slipping, I have been using a Salsa seatpost collar from day one because I had a problem with the seat slipping when I demo'd an F29 in a race last November. I am going to try several things to cure the slipping but was wondering if anyone else is experiencing the same problem.

  2. #2
    clone
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    May 2004
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    My F29 stock seatpost slipped in the early days, and again after I upgraded to a Thompson. I've fixed it by basically cranking up the hex key on the stock clamp to the bejesus. It's very tough to do up with just the QR now, but it ain't slipping!

  3. #3
    Like catnip for people
    Reputation: ar1981's Avatar
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    Oct 2006
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    isn't it a bit dangerous with regards to the frame? Having the QR too tight??

    My seat was slipping like crazy and before I knew any better I was tightening the hell out of it... Then I heard about frame damage.

  4. #4
    clone
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    No, frames aren't overly prone to being damaged that way (not to say it's impossible - and it's certainly easy to overtighten a carbon fiber seatpost). If I can still tighten the QR up manually it's still not as tight as it could be with a hex key.

  5. #5
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    Reputation: skinl19's Avatar
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    Since I built my bike from the frame up I started with a Thomson post. It seems liek the seat tube may be slightly off spec, or oversized. Haven't had a chance to put a mic on it but the post feels looser than on other bikes.

    I seemed to have solved the slipping problem for now by using a very light coating of grease and sprinkling on some of the shafting powder I had from making golf clubs. It would be similar to suggestions of using chalk or sand to take up the clearance.

  6. #6
    i am, therefore, i ride
    Reputation: nico2me's Avatar
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    Feb 2007
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    The seatpost (Cannondale Competition) on my Scalpel was slipping for a long time until I decided to replace it with Tompson Elite and that solved it...... no more slipping for over a year now.

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