Automatic Piston Gun

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.
Kobl
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Thu Mar 22, 2007 5:17 pm

I have recently been looking at Marks full auto marble gun here. I recently began construction on my steel (black and gavy) bb gun and was wondering if his full auto system could be adapted for use on a homemade piston valve. The chamber is 1/2x12" with a barrel sealing tee valve with both copper and airsoft bb barrels.

Thoughts and help would be appreciated,

-Butt
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jackssmirkingrevenge
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Thu Mar 22, 2007 5:24 pm

Why not, after all the QEV is a piston valve anyway operating on exactly the same principles.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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NeoSpud
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Thu Mar 22, 2007 5:39 pm

Not to be a nitpick, but QEVs like the one on mark's gun is a diaphragm valve. ;)

Doesn't change the overall answer to your question though... you sure can use it
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A-98
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Thu Mar 22, 2007 5:56 pm

im pretty sure QEV's are super light-weight piston valves.
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NeoSpud
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Thu Mar 22, 2007 7:26 pm

I'm pretty sure that I've taken enough of them apart to know that the vast majority of them use a diaphragm. :wink:
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meatballs
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Thu Mar 22, 2007 8:37 pm

doesn't matter which it uses, both do the same thing. as long as you are dumping pressure into the barrel it doesn't matter how. you could use a sprinkler valve or ball valve or whatever, and it would work, it would just be less powerful depending on the type of valve. but yes, a piston will definitely work.
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jackssmirkingrevenge
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Thu Mar 22, 2007 11:35 pm

NeoSpud wrote:Not to be a nitpick, but QEVs like the one on mark's gun is a diaphragm valve. ;)
Since some QEVs *are* co-axial piston valves and the piston/diaphragm valves operate on the same principle, I think all the evidence points to you in fact being a nitpick :roll:

:D :D :D
hectmarr wrote:You have to make many weapons, because this field is long and short life
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NeoSpud
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Fri Mar 23, 2007 12:56 pm

Alright, I admit it, you've "outed" me! I am indeed a blasphemous nitpick!
:oops: :oops: :oops: :oops:

I blame my perfectionist parents; it isn't my fault!
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jackssmirkingrevenge
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Fri Mar 23, 2007 2:10 pm

yes yes, blame the parents... honestly, is there anyone left in the litigation loving US willing to take responsibility for their own actions?! :shock:

:wink:
hectmarr wrote:You have to make many weapons, because this field is long and short life
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NeoSpud
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Fri Mar 23, 2007 2:14 pm

Well it's all those pompous Europeans' fault, with their philosophy and solipsim and gibberish nonsense!

Plus, passing the buck is a lot more fun. :wink:
"oh my god, I'm so old now" -me, 2020
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jackssmirkingrevenge
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Fri Mar 23, 2007 2:15 pm

I'll drink to that :D cheers!
hectmarr wrote:You have to make many weapons, because this field is long and short life
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