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FIRE Pistons By Docfire PB

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    FIRE Pistons By Docfire PB

    FIRE Piston for ID, WGP, Res, & MacDev – Docfire Paintball

    Click image for larger version

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    #2
    I noticed a difference with nummech piston. I will likely have to pick up a few for my other markers. I am sure some people may or may not see the benefit in this, but i think these are cool for the guy trying to squeeze every drop out of his marker.
    BeardedWorks.com (Your Inception Designs and Shocktech Dealer)
    BW Youtube
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    I buy Automags and Mag Parts also.

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      #3
      What do these do

      Comment


        #4
        Originally posted by Psycho91 View Post
        What do these do
        "Replace your Damaged or Low Flowing regulator piston. These pistons are higher flow which will allow you to run a lover operating pressure*. 6061 anodized pistons will stand the test of time. "
        BeardedWorks.com (Your Inception Designs and Shocktech Dealer)
        BW Youtube
        BW Ebay

        BW Email
        I buy Automags and Mag Parts also.

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          #5
          This thread is useless without reg dyno’s .. show us that improved recharge/flow/consistency

          Comment


            #6
            As a buffoon, I appreciate the washer patterns anodized on the pistons.

            Comment


              #7
              Originally posted by ford View Post
              As a buffoon, I appreciate the washer patterns anodized on the pistons.
              Yeah, me too. Saves having to look it up or try to analyze a picture I may or may not have taken beforehand.
              MCB Feedback

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                #8
                Originally posted by ford View Post
                As a buffoon, I appreciate the washer patterns anodized on the pistons.
                Originally posted by zinger565 View Post
                Yeah, me too. Saves having to look it up or try to analyze a picture I may or may not have taken beforehand.
                Click image for larger version

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                It's one of those little details that I really appreciate.
                Dulce et decorum est pro comoedia mori

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                  #9
                  Still no dyno

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                  • docfire

                    docfire

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                    Editing a comment
                    Not yet.

                  #10
                  I'm a little confused. A higher flowing piston to allow a lower operating pressure, or tank input pressure? Flow through the piston should only be relevant immediately after the shot, when the reg opens... and the idea is that a typical reg piston starves the gun if you run too low an OP, but not at higher OPs?

                  If my memory serves, volumetric flow depends exclusively on the port diameter/ geometry if there's a good difference between the two pressures (e.g. dropping from 800psi to 350), but that flow will slow down as downstream pressure, that is, operating pressure, increases.

                  I'm interested in a dyno test, with upstream pressure known and downstream at several setpoints, as much to understand the velocity through the reg piston as anything. I'd recommend at least one point at a 2:1 upstream to downstream ratio, one above, and a couple below.

                  A look at the seat-end corners would be interesting, too - namely, the radii.

                  The engineer in me is starting to nerd out. I apologize.
                  Feedback
                  www.PhrameworkDesigns.com < Nelspot sears and triggers back in stock! Also Sterling feeds, Empire feedneck adapters, and some upcoming projects.

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                  • docfire

                    docfire

                    commented
                    Editing a comment
                    Feel free to PM me as I have questions. we can talk over the phone.

                  • flyweightnate

                    flyweightnate

                    commented
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                    Cool, will do.

                  #11
                  "higher flow which will allow you to run a lower operating pressure"

                  The spring stack will change the pressure output irrespective of flow. For example: I can take my stock inception reg and flip one washer to achieve lower pressure or add a washer to increase pressure. The inner diameter of the piston would not affect the pressure.

                  But I get what you are trying to do... the larger inner diameter should increase the response time since the piston will open less height, equaling a reduction in pressure drop from shot to shot. I could, run a really low recharge rate reg at low pressures, if, my flow requirement is only 1shot/5sec. Of the many WGP piston iterations, I do notice these benefits from a larger piston diameter base(pictured left below)

                  These are all the same dimension in length:

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                  Another mod I have done for flow, is drill extra holes in the reg seat on WGP LPRs and HPRs air supply, this upstream will choke out the downstream. I don't have a good picture of a modded one, but this will give you an idea. edit: this was off an eBay gun I bought titled leaking, I found the leak.
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                  Last edited by latches109; Today, 12:07 AM.

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                    #12
                    Once again, guns were shooting 20bps w/o shootdown 20+ years ago. How is this relevant at 10.5 bps? Other than the spring stack etching, which is nifty for those that can’t remember.

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