Mainspring affect velocity?

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  • jester_s1
    Registered User
    • Jul 2006
    • 34

    #1

    Mainspring affect velocity?

    It doesn't seem like it should, but my velocity went down on my 68 classic when I stretched out the mainspring to make it tighter. Can the tension there affect velocity or should I just keep a better eye on the velocity adjuster?
  • st6212
    Registered User
    • May 2001
    • 470

    #2
    Yes, the length of the mainspring will affect velocity. You just need to dial up the velocity adjuster to compensate for the velocity drop.

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    • SR_matt
      Santa Sucks
      • Jun 2006
      • 1072

      #3
      by pulling on it it gets lengthened, and there for will take more to push it down to the same size as before. it will probably bend back over time but u will get lower fps for a while from it

      -matt

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      • athomas
        Of course it works-its AGD
        • Jan 2002
        • 8039

        #4
        It definately changes the characteristics of the valve because it affects how long the powertube is open and allows air to flow.
        Except for the Automag in front, its usually the man behind the equipment that counts.

        Comment

        • jester_s1
          Registered User
          • Jul 2006
          • 34

          #5
          Well that makes sense. The bolt goes back in sooner, leaving less time for the air to come out and accelerate the ball. Thanks.

          Comment

          • jester_s1
            Registered User
            • Jul 2006
            • 34

            #6
            One more newb question: Is it better for efficiency, ball breaks or anything else to run a lighter or heavier spring? I stretched it out because I was getting breech breaks and thought it would soften the blow. But with more pressure need to shoot the gun maybe that's the wrong way to go. Anyone know?

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            • SR_matt
              Santa Sucks
              • Jun 2006
              • 1072

              #7
              harder main spring = lower efficenty (some what) and softer on paint

              first thing to figure out though is if the paint u have is old/just brittle. i went through and adjsuted and swaped springs and all then found out i had bad paint.

              -matt

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