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  1. #1
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    Seat falls during rides...

    On my new MTB, the seat drops a few inches after about 30 minutes of riding. I have the QR and as tight as I can and still be able to open it without tools. Anything else I can do to stem the slide?

  2. #2
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    Reputation: bigpedaler's Avatar
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    For a quick fix, take the post out and rub dirt on it, put it back in and crank 'er down.

    For a BETTER fix, replace the QR seat clamp with a bolt-style.

    Double-check to make sure you have the size you need. 1-2mm too small IS possible (for example, Surly usually calls for a 29.8 post, and my Kona takes a 30.0).
    A bike is the only drug with no bad side effects....

  3. #3
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    Carbon prep-compound instead of grease is probably the easiest (cheapest) fix.


    Like pedaler said, a bolt-style clamp (or a better quality QR type) would also probably fix the problem.

  4. #4
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    In this order try,

    A dab of grease on the qr or bolt so you make sure torque is being delivered.

    If not, yup, carbon paste on the post.

    If not, yup, stronger clamp.
    Round and round we go

  5. #5
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    Re: Seat falls during rides...

    Carbon prep the post or use powdered chalk. Both work well.

  6. #6
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    Seat falls during rides...

    I addition to what has been mentioned

    Clean the post AND the inside of your seat tube.

    Also make sure the gap in your clamp lines up with the slit of your frame's seat tube

  7. #7
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    Also if all that fails, drink a can of soda, cut a nice shim from it, insert shim, problem solved if you really have that much tolerance difference.
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  8. #8
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    Quote Originally Posted by bigpedaler View Post
    For a quick fix, take the post out and rub dirt on it, put it back in and crank 'er down.


    ^^ If you hate your bike.


    If your bike has a QR I'd give 80% odds that Meats first suggestion will cure the problem, and the other 20 that a better QR (or bolt) will.

  9. #9
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    Quote Originally Posted by theMeat View Post
    In this order try,

    A dab of grease on the qr or bolt so you make sure torque is being delivered.

    If not, yup, carbon paste on the post.

    If not, yup, stronger clamp.
    Ditto.

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