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  1. #1
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    Marathon SL 2005 knocing sound

    Hello guys
    This is for the zocchies gurus
    I have 2 Marathon SL 2005 I got them second hand and by know the both of them are developing a knocing sound from the inside (not when are bocked) seems like a little play (movement) on the stations.
    Any sugestion will be apreciate
    In my workshop, dirty hands is a state of mind

  2. #2
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    Mine knocks without enough negative psi when hitting bumps.

  3. #3
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    Mine have enough negative pressure since I reduced the travel to 100mm
    In my workshop, dirty hands is a state of mind

  4. #4
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    is it more of like a tapping sound?

    Try setting the rebound full fast and if it goes away it is just the delrin ring that slides on the piston that opens and closes the ports. When the piston changes direction it smacks into the ring making that sound and it is normal but does seem to get louder with age. You can always replace the ring too and they are very cheap.

  5. #5
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    Well my english it is not good enough to state the differences between knocking and tapping, it is just a kind of deaf sound like a piece of plastic hitting inside the fork bottles
    In my workshop, dirty hands is a state of mind

  6. #6
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    Quote Originally Posted by Midle Age Warrior
    Well my english it is not good enough to state the differences between knocking and tapping, it is just a kind of deaf sound like a piece of plastic hitting inside the fork bottles
    That sounds like that could be right and it is not your english, sounds are just hard to describe from one persons opinion to another. Do me the favor and try setting the rebound fast and see if it goes away like I was saying that would be your clue that it is just the plastic flow control ring.

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