My QEV copper cannon

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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spanerman
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Sat Mar 31, 2007 10:24 am

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555fps with a 12g potato slug that aprox 175j, what you think?
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chaos
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Sat Mar 31, 2007 10:28 am

man thats pretty good, what pressure you run at?

i like the shape, shoot marbles.
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spanerman
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Sat Mar 31, 2007 10:29 am

i shoot at 100psi and shoot bolts/sockets out of it
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chaos
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Sat Mar 31, 2007 10:33 am

you could probably go a lot higher than that
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pigion
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Sat Mar 31, 2007 10:35 am

Why did you put a ball valve behind the QEV on picture 3 and 4? ( at the exhaust side)
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chaos
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Sat Mar 31, 2007 10:39 am

pigion wrote:Why did you put a ball valve behind the QEV on picture 3 and 4? ( at the exhaust side)
umm i believe that is actually what exhausts it.
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sharpshooter
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Sat Mar 31, 2007 11:23 am

Thats more likely a safety. There would be now point in having a QEV if you still had to open that ball valve every time to actually fire. More of a "lets make sure i don't get shot in the face while loading kinda deal". It also probably has the benefit of keeping starch from gumming up the QEV.
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spanerman
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Sat Mar 31, 2007 11:41 am

the ballvalve behind the QEV is the pilot, using a BV give much more poer over a blowgun. the one infron of the QEV is a saftey
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experament-u2
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Sat Mar 31, 2007 11:34 pm

i like the long version it look sweet nice job on the soldering to

any chance of a video of it shooting?
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spanerman
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Sun Apr 01, 2007 4:40 am

this is the short vesion at 60psi with a spud slug http://www.youtube.com/watch?v=U6HH3pAgB3w

and here is a video of them both

http://www.youtube.com/watch?v=M4FfH4UzTiU
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experament-u2
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Sun Apr 01, 2007 5:28 am

it looks good

(nice music btw CKY rock)
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TwitchTheAussie
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Sun Apr 01, 2007 6:51 am

Its mad I like it much.
Raise your horns if you love metal.
spudgunning is like sex, once you've tasted, you can't wait til next time.
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CpTn_lAw
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iPaintball
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Sun Apr 01, 2007 9:22 am

Nice gun, good soldering job. One question though, where'd you get that qev?
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jackssmirkingrevenge
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Sun Apr 01, 2007 9:27 am

experament-u2 wrote:it looks good

(nice music btw CKY rock)
Er... It's machine head (davidian) and rage against the machine (renegades of funk) :P

edit: actually pistol grip pump from the same album would have been more appropriate :wink:
hectmarr wrote:You have to make many weapons, because this field is long and short life
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spanerman
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Sun Apr 01, 2007 9:41 am

yeah no CKY,btw i love davidian so much my band is called shotgun blast. the valve is availble from http://www.uksgc.co.uk, i am getting 28mm chamber/barrel tomoro 1000mm chamber and 1400mm barrel i will be using C size batterys as ammo, and with my running pressure of 8kpa it should own :shock: :P :twisted:
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