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Thread: Pumps?

  1. #1
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    Pumps?

    I just ordered my first air fork. Do I need a fork pump? Can I just use my floor pump?

  2. #2
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    Unfortunaly you will need to get a shock pump. Your local bike shop should have one or you can order one from just about anywhere.

    Jim

  3. #3
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    Thanks. Do you mind if I ask why? Does it need a special head to attach to the fork? Will my floor pump not produce enough pressue?

    I just don't get it. Maybe it will become clear once I actually get my fork and can take a look at it.

  4. #4
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    Most forks will require somewhere around half your body weight or more in the main air chamber. You will need to pump it up so that it sags (compresses when you sit on the bike) about 25% of its total travel. You will have to check the exact recomended sag in your owners manual. A shock pump pumps a small volume at high pressure. Usually 100psi. or higher while your tire pump is relatively lower pressure at higher volumes.

    Ronnie.

  5. #5
    All 26.5" all the time!
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    Quote Originally Posted by FixThatBike
    Thanks. Do you mind if I ask why? Does it need a special head to attach to the fork? Will my floor pump not produce enough pressue?

    I just don't get it. Maybe it will become clear once I actually get my fork and can take a look at it.
    The volume difference between the air chamber in the fork/shock and your floor pump will make precise adjustments very difficult, if not impossable.

    Imagine a fork leg with 50psi in the air chamber. When a floor pump is connected to the valve, a major part of the pressure in the fork will travel into the hose, gauge and up to the check valve,thus giving a false indication.

  6. #6
    KDK
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    Make sure the pump you get is calibrated to the required range of the fork. Some pumps only start registering pressure after say 70psi where the fork may need only 50 to 60.

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