Switching to HPA

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  • Psycho
    Registered User
    • Mar 2002
    • 5
    #1

    Switching to HPA

    Last March I bought a 68 Classic w/powerfeed and now I just ordered a Crossfire 68/4500 tank. I should receive it any day now. Is there anything that I need to do to the gun itself to make it compatible, or shoot well, with HPA?

    Any help is appreciated.
    Thanks!
    Tags: None
    • Load SM5
      Scruffy Administrator

      • Oct 2000
      • 6772
      #2
      Not really. Did you run it off of CO2 for a while?


      Moorewatch

      If you read this, thank a teacher.
      If you read this in English, thank a soldier.

        Comment

        • xmetal2001
          Junior Member at heart
          • May 2001
          • 1994
          #3
          You dont need to make any changes in order to run your mag with HPA. In fact, you SHOULDN"T make any changes to your valve, aftermarket parts merely decrease performance.

          If you've been running on CO2 sometimes its a good idea to replace the seals in your valve, you might want to pick up a parts kit. But unless your having problems, dont worry about it.

            Comment

            • Psycho
              Registered User
              • Mar 2002
              • 5
              #4
              I've been using CO2 and have had problems with liquid even though I've got an expansion chamber and an anti siphon tube installed. I have replaced some of the o-rings in anticipation of the HPA.
              Thanks for the info.

                Comment

                • mykroft
                  Registered User
                  • Jan 2001
                  • 2010
                  #5
                  The only recomendation I have is to swap the expansion chamber with a gas-thru grip. Expansion chambers can lead to mild shootdown when running HPA. I personally had good luck with mine, but I have seen preoblems on other's setups.
                  2k2 VF Cocker, STO/Eclipse Blade, Old-Style 14" Boomstick,
                  68AutoMag Classic Feed CF11023, Ring trigger.

                    Comment

                    • codeJockey
                      Tall Man With Shiny Scalp
                      • Mar 2002
                      • 78
                      #6
                      Kill the expansion chamber. Also, you can find a replacement 'HPA' cylinder for the Mag's regulator at a number of online stores for about $20... Don't buy one! They are completely unnecessary. The stock 'Mag is a thing of beauty on HPA. Enjoy...

                        Comment

                        • SqueegeeKid
                          I bent my wookie......
                          • Mar 2002
                          • 298
                          #7
                          I had problems with my SmartMag's consistency being whacky once i changed from CO2 to HPA. AGD sent me a newer reg piston designed for HPA.

                          Now my SmartMag is somewhat of a forgotten dinosaur, so that might not apply for you, especially if its a newer Mag. Maybe the AGD tech guy suckered me into getting a new piston, but it's fixed now so i believe him.

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