Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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vng21092
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Fri Feb 07, 2014 1:19 pm
I was a little bored and I figured I haven't built anything in a while so I whipped up a quick QEV build,
Now, I had this idea to switch out the schrader valve and instead put a quick disconnect there. It would be line fed through a tube connecting to a 2'' PVC air tank, maybe 2 or 4 feet long that would be placed inside a backpack or something. Now, if the barrel is 1/2'' x 2 feet (volume ~6.7 cubic inches), what would be the best chamber size? Would 1'' PVC x 6 inches be the most efficient since its a 1:1 ratio? I will be shooting 1/2'' marbles.
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1nxtmonster
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Fri Feb 07, 2014 3:50 pm
I did a rev with 1/2 inch barrel x 3 feet long, and my firing chamber was about 10 cubic inches. It worked great for marbles and nail darts.
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jackssmirkingrevenge
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Sat Feb 08, 2014 8:15 am
vng21092 wrote:Would 1'' PVC x 6 inches be the most efficient since its a 1:1 ratio? I will be shooting 1/2'' marbles.
It depends on the pressure you are using, volume ratio alone is meaningless. At say 150 psi you would get decent performance.
You might want to consider getting a regulated paintball bottle if you want some good velocity coupled with a compact setup and a good number of shots.
hectmarr wrote:You have to make many weapons, because this field is long and short life
