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air pressure in rear shock.

Discussion in 'The Shop' started by craigyboy, Sep 9, 2005.

  1. craigyboy

    craigyboy Chimp

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    ps another question when I pump up My dhx 5.0 shock with my fox pump say to 150 psi, I take off the pump, then check it again later and its down to about 120 psi. What going on here, I thought the shock wouldnt loose any air when I detach or reattach the pump.
     
    #1 -   Sep 9, 2005

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  2. IronJim

    IronJim Monkey

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    the reason is that there is so much pressure in such a small chamber that when you remove the pumpit will lose some of the psi. when i remove mine it lose 10 psi, you shouldnt be losing 30 psi though. i would try removing the pump fast, or an easy way of doing it would be to pump it up to 180 psi if you want 150 psi.
     
    #2 -   Sep 9, 2005
  3. keen

    keen Monkey

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    When you take an air reading the hose must fill w/ air first. If you measure 30 psi losses each time you attach the pump that is the amount of air filling the hose.