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  1. #1
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    Lefty Travel Decreases - during riding - but no loss of pressure

    I see others have this issue but can't find the required fix.

    Pressure is NOT lost, but the travel reduces/sag gradually increases during riding until I have no travel left. Unweighting the fork allows the fork to rebound to normal travel and then it starts all over again.

    Changing pressure makes no difference.

    What is the cause and what is the fix (I want to do the work myself if possible)

    Thanks

    Missile

  2. #2
    All Lefty's, all the time Moderator
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    Solo Air piston malfunction.

    Either a broken wave washer, or just a funky piston.

    Causes too much positive air to get pushed over to the negative side without ever resetting it back to positive, sucking the fork down.

    Quick test is to grab the tire with your feet, and pull up on the bars, which manually resets the air. Won't fix it, but puts it back to normal till it over pressurizes again.
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  3. #3
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    I have an "issue" with it as well.

    While inflating the Lefty, at about ~80PSI, the pressure drops by 20-30psi and I can hear air release somewhere at that point.
    Is it Solo air leveling itself or broken SA?

    Lefty can then be inflated normally, but I notice that after inflating it to correct pressure, and then pushing on the handlebars, it will compress and rebound, but won't go up for the last 5mm or so.
    I can grab the tyre and pull it up by the bars and it will go up, only to sag for that 5mm or so after I put pressure on it again.

  4. #4
    All Lefty's, all the time Moderator
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    Sounds like a funky pump to be honest. The SA piston might be doing that if maybe you fully compress the fork before inflating, but I can't see why someone would do that???

    I've never had a fork spontaneously dump air during pumping, then act normally afterwards.

    I'd have the damper pulled, and seals inspected, best way to rule them out, and they are the most delicate part of the system, so a logical first step.
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  5. #5
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    I have had 2 (at the shop) this year have SA break inside. C-Dal sent us a new SA each time and fixed it.

    Craig have you seen this?

  6. #6
    All Lefty's, all the time Moderator
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    Yep, seen it before too. If they work, then tend to not be problematic. If they don't, replace it, and the issue disappears 99.9% of the time.....
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

  7. #7
    Nor­wegr
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    My 2011 100mm XLR does this at times when climbing steep hills. The fork will compress all the way, when I take the weight off the lefty pops right back and will work as normal.

    Should probably just have it serviced.

  8. #8
    All Lefty's, all the time Moderator
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    Quote Originally Posted by Vegard View Post
    My 2011 100mm XLR does this at times when climbing steep hills. The fork will compress all the way, when I take the weight off the lefty pops right back and will work as normal.
    Locked out when this happens I assume?

    If yes, it's normal behavior, and with the lockout off, it shouldn't.

    If no, then yes, a similar issue.....
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

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