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Thread: Lefty SPV HELP!

  1. #1
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    Lefty SPV HELP!

    This is my first Lefty and I was trying to do the initial set up when I ran into a problem setting the air pressure What is the trick? I screw on my shock pump, set the pressure, but as soon as I unscrew the pump I loose all of the pressure immediately
    Thanks for the advise!

  2. #2
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    Reputation: ccaddy's Avatar
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    Been there

    Is this a brand new bike/Lefty or a used one ?

    Try putting a new schrader core in the valve core .
    You may even want to try using a different shock
    pump to see if the issue is with it .

  3. #3
    LA CHÈVRE
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    Also note that the SPV chamber is small in volume, if you re-attach your pump to know if you lost pressure, almost all the air in the SPV will move into the pump as you connect it so pressure will be very low, it could have been fine before you attached the pump again. Normally, a good pump is supposed to be designed so when you disconnect it, it first releases the valve then, a bit after, the seal is undone so the air coming out is mostly air that is in the pump that escapes.

    DAN.GEROUS.NET : MOUNTAIN BIKING : CYCLOCROSS : ROAD :

  4. #4
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    It's a brand new shock.... I am using a "Buzzy's Pollinator" shock pump.

  5. #5
    El Pollo Diablo
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    are you sure it's all shock pressure, and not just excess air in the pump being released?

  6. #6
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    Yeah, unfortunately...

  7. #7
    LA CHÈVRE
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    It couldn't hurt to have the valve core tightened... it might be just that!

    DAN.GEROUS.NET : MOUNTAIN BIKING : CYCLOCROSS : ROAD :

  8. #8
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    Thanks for the advise. I'll give it a shot and let you know

  9. #9
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    Try this too. When screwing it on, watch the gauge, as soon as pressure registers, go a half turn more, and pump to desired pressure. Then, when you go to remove the pump, give a nice big full wristed twist, going right past the engagement point. Since you know where it is, you won't be pausing at the critical moment of disengagement, for a regrip.
    This is a Pugs not some carbon wannabee pretzel wagon!!

    - FrostyStruthers



    www.mendoncyclesmith.com

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