FX Crown/Impact regulator mod tutorial

Forums PCP Airguns FX Crown/Impact regulator mod tutorial

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    Glem.Chally
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    Shinyknight

    weatherby

    Shinyknight

    On my impact x 25 Cal there is only 11 bv washer. Is that correct or am I missing some. I'm guessing new impact has only 11? I'm sure I didn't drop any when I took it out. 

    You'll likely have the latest regulator, it is a bit different in size compared to the previous models. The newer regulators have thicker/bigger BV washers, and can handle a wider pressure range.

    People who know me never would have thought, but my Impact X regulator is still stock 😄 

    I just never felt the need to take it apart, it works flawless. (Just about all regulators will creep ever so slightly over time)

    I bought my impact like a month ago. I believe it's the one with the amp reg. But even with the new reg it creeps overnight. I usually just dry fire 1-2 to get it back to normal. I give this mod a try, just use the 11 bv washers that was in it. Didnt have any flat washer, so just double stack the bv washes. Will see if it holds tomorrow.

    Creeps how much?

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    weatherby
    Participant
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    Shinyknight

    weatherby

    Shinyknight

    On my impact x 25 Cal there is only 11 bv washer. Is that correct or am I missing some. I'm guessing new impact has only 11? I'm sure I didn't drop any when I took it out. 

    You'll likely have the latest regulator, it is a bit different in size compared to the previous models. The newer regulators have thicker/bigger BV washers, and can handle a wider pressure range.

    People who know me never would have thought, but my Impact X regulator is still stock 😄 

    I just never felt the need to take it apart, it works flawless. (Just about all regulators will creep ever so slightly over time)

    I bought my impact like a month ago. I believe it's the one with the amp reg. But even with the new reg it creeps overnight. I usually just dry fire 1-2 to get it back to normal. I give this mod a try, just use the 11 bv washers that was in it. Didnt have any flat washer, so just double stack the bv washes. Will see if it holds tomorrow.

    You can't detect flat washers when disassembled, it happens when the regulator is pressurized.

    The regulator piston starts to move under pressure, compressing the belleville washer (BV) stack, until it evens out with the preset pressure.

    When the stack is compressed too much (too high pressure), the  belleville washers flatten out, and can't be compressed any further. That's the point where the regulator starts to act inpredictable, and can't seal the incoming airflow anymore, resulting in overshoot of pressure on the regulated side.

    The AMP regulator shouldn't have this creep issue anymore. The tiny bit of creep your pics are showing in your topic is negligible IMO. (About 3 bar maybe?)

     

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