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My QEV copper cannon

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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My QEV copper cannon

Unread postAuthor: spanerman » Sat Mar 31, 2007 10:24 am

Image
Image
Image
Image
Image
555fps with a 12g potato slug that aprox 175j, what you think?
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Unread postAuthor: chaos » 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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Unread postAuthor: spanerman » Sat Mar 31, 2007 10:29 am

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

you could probably go a lot higher than that
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Unread postAuthor: pigion » 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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Unread postAuthor: chaos » 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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Unread postAuthor: sharpshooter » 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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Unread postAuthor: spanerman » 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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Unread postAuthor: experament-u2 » 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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Unread postAuthor: spanerman » 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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Unread postAuthor: experament-u2 » Sun Apr 01, 2007 5:28 am

it looks good

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

Its mad I like it much.
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Unread postAuthor: iPaintball » 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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Unread postAuthor: jackssmirkingrevenge » 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:
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Unread postAuthor: spanerman » 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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