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HELP IN MAKING A QEV!

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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HELP IN MAKING A QEV!

Unread postAuthor: destronx » Fri Jul 08, 2011 5:40 pm

hello
i am making an pneumatic rifle with a qev valve but i need it to be 1/2 at most is it posible to make it that small??
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Unread postAuthor: ramses » Fri Jul 08, 2011 5:55 pm

You can buy QEV's from 3/4" all the way down to 8-32 threads, and possibly smaller. What is the diameter of the bore of your rifle?
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Unread postAuthor: destronx » Fri Jul 08, 2011 6:25 pm

So what I want to do is this
SPEC:
-1/2 cooper pipe(as cannon)
-QEV
-quick change adapter as tank it is so that is uses cO2 canisters
-1/2 blowgun
- and the rest needed to put it together(nipples and other crap)
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Unread postAuthor: destronx » Fri Jul 08, 2011 7:08 pm

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Unread postAuthor: ramses » Fri Jul 08, 2011 7:25 pm

If you want a 1/2" copper barrel, no. That valve won't provide enough flow. I suggest you brows the wiki for more information regarding valves and how to size them. For the record, people tend to get angry at new members for asking simple questions, or for not searching/researching first.
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Unread postAuthor: destronx » Fri Jul 08, 2011 10:12 pm

ok so is this one better i research and found this onehttp://cgi.ebay.com/Pneumatic-Quick- ... 3ca1f78e9c
but i still don't know if it will support the pressure of the co2 canister
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Unread postAuthor: destronx » Fri Jul 08, 2011 10:14 pm

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Unread postAuthor: jackssmirkingrevenge » Sat Jul 09, 2011 12:43 am

The specs say 140 psi but you could probably take it too 500 psi or so without failure. Still, CO<sub>2</sub> vapour pressure is 800-1000 psi, what exactly are you planning to fill it with?
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Unread postAuthor: wyz2285 » Sat Jul 09, 2011 7:45 am

Have you thought about making one? I have made my and it works very well
Here is the video [youtube]http://www.youtube.com/watch?v=RTNh9t__5eE[/youtube]
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Unread postAuthor: destronx » Sat Jul 09, 2011 9:11 am

i look my stank is going to be this
http://cgi.ebay.com/Paintball-New-Quick ... 2a0f2d8240
so that i can use co2 12g canisters
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Unread postAuthor: destronx » Sat Jul 09, 2011 9:15 am

wyz2285 wrote:Have you thought about making one? I have made my and it works very well
Here is the video [youtube]http://www.youtube.com/watch?v=RTNh9t__5eE[/youtube]

yes i had tried to do one but it was a failure i also saw ur video but i havent try it...
but when i found this i thing is perfect because it is as samll as i wanted so that it can fit in the stock i am making for the rifle
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