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the "Victory" copper QEV rifle

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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the "Victory" copper QEV rifle

Unread postAuthor: origin unknown » Sun May 06, 2007 8:51 pm

The "Victory" is my first copper QEV rifle. It is breech loading (credit goes to hotwired for this) and it is capable of 200 psi. The Parker QEV is a diaphram one as you will see in the pictures below. There is also a safety made from a ball valve near the trigger. It shot good with some carrots I used for ammo, but I am not really sure how fast they went. I reckon they went pretty darn fast.

Specs:

barrel length: 28"

barrel pipe size: 1/2" copper

chamber length: 20"

chamber pipe size: 3/4" copper

valve: 1/2" Parker QEV

pilot valve: modified husky blowgun

safety: ball valve "
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Attachments
CR6.JPG
CR5.JPG
CR3.JPG
CR4.JPG
CR2.JPG
CR1.JPG
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Unread postAuthor: homedepotpro » Sun May 06, 2007 8:53 pm

its a beauty. i love the configuration
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Unread postAuthor: iPaintball » Sun May 06, 2007 8:53 pm

Sweet gun! I would suggest mounting the blowgun in a way so that it's like a real trigger, but other than that, it's pretty bADasS!
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Unread postAuthor: spudthug » Sun May 06, 2007 9:04 pm

im not so sure that valve is rated to 200 psi... but it looks awesome as hell!! i love shiny copper... looks kind of like copperhead..only different valve and no grip with modded blowgun check valve and presta...ok its laot different but the top part kinda looks like it..
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4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: origin unknown » Sun May 06, 2007 9:05 pm

I tried mounting the blowgun like a real trigger, but it was uncomfortable to hold. :cry:
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Unread postAuthor: rad14701 » Sun May 06, 2007 10:06 pm

Very nice gun... The only thing I see as a potential performance issue is that you only have a C:B ratio of 1.61:1 which is somewhat marginal... But, hey, if it works that's all that matters...
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Unread postAuthor: origin unknown » Sun May 06, 2007 10:11 pm

How do i figure my chamber-barrel ratio?
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Unread postAuthor: hi » Sun May 06, 2007 10:34 pm

you need to find the volume then compare the two. to find volume muliply the area by the legnth.
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Last edited by hi on Sun May 06, 2007 10:48 pm, edited 1 time in total.
"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

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Unread postAuthor: experament-u2 » Sun May 06, 2007 10:35 pm

"WOW its copperhead primes little bro" :D
it looks rely nice specially with th polished copper

oh and is that a check valve behind ur fill point?
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Unread postAuthor: origin unknown » Mon May 07, 2007 7:50 pm

Yes, it's a check valve.
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Unread postAuthor: Hotwired » Mon May 07, 2007 7:53 pm

Did you bore out the tees to get the barrel and chamber through them?
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Unread postAuthor: schmanman » Mon May 07, 2007 7:57 pm

origin unknown wrote:I tried mounting the blowgun like a real trigger, but it was uncomfortable to hold. :cry:


if it's one that looks like this, do what I did, and cut the hook thingy off the back. it's much better.

Image


yeah, just cut the hook/hand guard thing off the back.
oh, and unscrew the tip from the bottom





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Unread postAuthor: paddo » Tue May 08, 2007 6:06 am

very nice. id love to build a copper gun soon. we just got a new gas welding kit from the insurance company too lol. wish i could get my hands onto a qev. thats really clean mate. inspirational.
got any damage pics ?
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Unread postAuthor: origin unknown » Tue May 08, 2007 9:03 pm

Hotwired wrote:Did you bore out the tees to get the barrel and chamber through them?

Yep, sure did.
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Unread postAuthor: origin unknown » Tue May 08, 2007 9:05 pm

paddo wrote:very nice. id love to build a copper gun soon. we just got a new gas welding kit from the insurance company too lol. wish i could get my hands onto a qev. thats really clean mate. inspirational.
got any damage pics ?


Sorry, no damage pics... I can't find any ammo besides carrots lol. I might post some once I get good ammo.
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