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Has anyone tried this?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Has anyone tried this?

Unread postAuthor: Goats spudz » Fri Sep 30, 2011 3:43 pm

Has anyone taken a Paintball tank at fit a qev + barrel inside the tank? like this
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Unread postAuthor: ramses » Fri Sep 30, 2011 3:46 pm

I don't think so. Good luck getting the QEV in there, though. :D
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Unread postAuthor: Goats spudz » Fri Sep 30, 2011 3:50 pm

ramses wrote:I don't think so. Good luck getting the QEV in there, though. :D
Bandsaw or angle grind the bottle in half? and Mig weld back together! :tongue9:
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Unread postAuthor: jackssmirkingrevenge » Fri Sep 30, 2011 3:51 pm

I seem to remember someone doing with a sprinkler valve. Hm.

I don't see the point when you could do this:

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Unread postAuthor: Goats spudz » Fri Sep 30, 2011 3:57 pm

jackssmirkingrevenge wrote:I seem to remember someone doing with a sprinkler valve. Hm.

I don't see the point when you could do this:
But on your design when the piston retracted wouldn't the barrel move out of position? BTW im not planning on making this i just thought it would be cool :tongue9:
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Unread postAuthor: POLAND_SPUD » Fri Sep 30, 2011 5:58 pm

But on your design when the piston retracted wouldn't the barrel move out of position?
I assum he expected you to understand that you need to attach the barrel to the tank

and before you ask - he wanted you to use epoxy
there are other ways in which you can do that though... compression fittings etc.

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OMG just put a 3 way valve there and there is no need to cut a hole for shrader valve
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Unread postAuthor: Technician1002 » Sat Oct 01, 2011 1:19 am

If you weld the heat may damage the QEV. Not sure how you would do this without damage. The valve would be non-serviceable in that configuration. A Coaxial piston valve would be much better.
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Unread postAuthor: ramses » Sat Oct 01, 2011 10:54 am

As far as cutting and migging the bottle, most modern tanks are aluminum (IIRC), so I understand that migging would be hard. Tig is apparently easier.

Also, the bottle is probably artificially age hardened to something like T-6. Welding would bring that to like T-0, and your new yield strength would be crap.
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