Prolite mainspring replacements

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  • JOESPUD27
    MCB Member
    • Jul 2020
    • 103
    • 618

    #1

    Prolite mainspring replacements

    My Prolite isn't reaching anything above 260fps. Even with a good bore match. Assuming I need a new mainspring and those seem all dried up. Is there a known good substitute?
  • infamoussmiley
    .
    • Jul 2020
    • 629

    #2
    Because of the valve design, you need a spring like the prolite / 68 special. A regular 98 or Carbine spring is not strong enough. ... just in case someone says, "use a 98 main spring".

    Best,

    Smiley

    Comment

    • JOESPUD27
      MCB Member
      • Jul 2020
      • 103
      • 618

      #3
      Correct, the prolite is 7in and the m98 are 4 3/8s? not long enough

      Comment

      • Meleager7
        MCB Member
        • Jul 2020
        • 2170
        • Ontario, Canada

        #4
        argghh...i was going to recommend pbsports, but their stock is exhausted now!!!

        https://www.pbsports.com/collections...al-main-spring

        '96 RF Mini Cocker, '95 RF Autococker, 68-Automag Classic, Banzai Splash Minimag, Gen-E Matrix, Shoebox Shocker 4x4, Montneel Z-1, Tippmann Pro-Carbine, Tippmann Mini-Lite, Tippmann Model-98, Tippmann 68-Special, Spyder .50 cal Opus/Opus-A , Tippmann .50 Cal Cronus , Gog Enmey .50 cal , Tippmann Vert ASA 68-Carbine, Bob Long Millennium, ICD Grey Green Marble Splash Alleycat Deluxe (runs liquid co2) , Halfblock 2K4 Prostock Autococker , 2K RF Sniper II

        Meleager7 Feedback: https://www.mcarterbrown.com/forum/b...ager7-feedback

        Mel Eager Productions, Paintball Videos: https://www.youtube.com/@meleagerproductions9082

        Comment

        • COB
          Expanded Gnome
          • Jul 2020
          • 854
          • Sparks, Maryland

          #5
          I have a few 7" springs. PM me

          Comment


          • Drewsif1023
            Drewsif1023 commented
            Editing a comment
            I can't PM you for some reason. Do you have anymore springs?
        • JOESPUD27
          MCB Member
          • Jul 2020
          • 103
          • 618

          #6
          Originally posted by COB
          I have a few 7" springs. PM me
          pm'd

          Comment

          • The Inflicted
            pǝʇɔᴉlɟuI ǝɥʇ
            • Jul 2020
            • 1510

            #7
            What sort of gas are you running it on?

            Comment

            • JOESPUD27
              MCB Member
              • Jul 2020
              • 103
              • 618

              #8
              Originally posted by The Inflicted
              What sort of gas are you running it on?
              HPA at 850

              Comment

              • Meleager7
                MCB Member
                • Jul 2020
                • 2170
                • Ontario, Canada

                #9
                switch to co2, and you should get a good working velocity....my pro-lite/mini lite is the same as you describe on hpa and my old pro-am I used to have was even worse, I could only get the Pro am to 240fps. Switching to co2 for that gun fixed the issue for me.
                '96 RF Mini Cocker, '95 RF Autococker, 68-Automag Classic, Banzai Splash Minimag, Gen-E Matrix, Shoebox Shocker 4x4, Montneel Z-1, Tippmann Pro-Carbine, Tippmann Mini-Lite, Tippmann Model-98, Tippmann 68-Special, Spyder .50 cal Opus/Opus-A , Tippmann .50 Cal Cronus , Gog Enmey .50 cal , Tippmann Vert ASA 68-Carbine, Bob Long Millennium, ICD Grey Green Marble Splash Alleycat Deluxe (runs liquid co2) , Halfblock 2K4 Prostock Autococker , 2K RF Sniper II

                Meleager7 Feedback: https://www.mcarterbrown.com/forum/b...ager7-feedback

                Mel Eager Productions, Paintball Videos: https://www.youtube.com/@meleagerproductions9082

                Comment

                • The Inflicted
                  pǝʇɔᴉlɟuI ǝɥʇ
                  • Jul 2020
                  • 1510

                  #10
                  Originally posted by Meleager7
                  switch to co2, and you should get a good working velocity....my pro-lite/mini lite is the same as you describe on hpa and my old pro-am I used to have was even worse, I could only get the Pro am to 240fps. Switching to co2 for that gun fixed the issue for me.
                  Agreed. My Pro-Lite will barely even cycle on 850psi HPA.

                  Comment

                  • Chappy
                    Overmoderator
                    • Jul 2020
                    • 1283

                    #11
                    Mine shoots 285 on 850 hpa all day long with room to spare with zero mods so it is possible though.

                    Comment


                    • Meleager7
                      Meleager7 commented
                      Editing a comment
                      Yeah, i’ve seen other members report success on HPA as well in past threads, yet some guns need the more energy dense sweet white clouds....I have no idea why the experiences with that pro-lite valve seem to vary so much from gun to gun?
                  • JOESPUD27
                    MCB Member
                    • Jul 2020
                    • 103
                    • 618

                    #12
                    Shoots fine on HPA, just needs a new spring

                    Comment

                    • shadow191
                      Bunker Buster
                      • Jul 2020
                      • 179

                      #13
                      Did you ever get this fixed? I got my old Pro-lite up and running after sitting for ~15 years and it won't go over 240 on HPA. Last time it was used was co2 and no issues with velocity. So not sure if HPA is issue or if it's just that sitting for 15 years has finally worn out the spring. co2 isn't always available at my field so would have to drive to separate shop and get a tank filled (plus buy tank first) if I wanted co2.

                      It cycles fine, not like my Spyder Compact that's 50/50 on whether it will cycle on HPA.

                      Comment

                      • apamburn
                        Rockin and Cockin
                        • Jul 2020
                        • 69

                        #14
                        I had velocity issues on mine. New mainspring made the difference for me. Reaches 270+ with HPA which is good enough for me. Bore match could probably be better. I'm all out of CO2 so I can't speak to it.

                        I'd recommend trying a new mainspring if you really demand it. Make sure your HPA tank is putting out 800+ PSI. And finally, check velocity with CO2. It might be that marker just needs the CO2 even if you have to go out of your way for the fill.

                        Comment

                        • COB
                          Expanded Gnome
                          • Jul 2020
                          • 854
                          • Sparks, Maryland

                          #15
                          I have a ton of these guns from various sources. Not all have the same valve. Not sure if this is because of Tippmann production changes or individuals making changes. So, some work fine on HPA and others not so much.

                          Comment

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