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Old December 13th, 2007, 18:28   #13
Flatlander
 
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Quote:
Originally Posted by Stresstest View Post
my main consern now is mostly about the Feets per second

i dont wanna put 2weeks worth of work on it and realise id have to rebuild a more restrictive gas chamber ((theres limits at how i wanna mod those thing haha))
Simple energy equation SHOULD give you close results (kinetic energy of pellet = kinetic energy of BB)

Final formula:

Velocity of BB = Square Root ( Mass of pellet X velocity of pellet squared / mass of BB)

Mass of pellet = I have no idea
Velocity of Pellet = 350 fps - remember to sqaure this #
Mass of BB = 0.2

Now this formula won't give you a precise result but I think it should be pretty close. The transfer of the energy to the pellet/BB between the two systems is not identical (different barrel diameters and sealing, geometries, inertial differences, etc). It should give you a good idea if this gun will be shooting at unsafe FPS.

Hope that helps and good luck.
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