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1/4" anyone have one like 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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1/4" anyone have one like this?

Unread postAuthor: turner » Wed Oct 07, 2009 1:04 am

anyone have experience with this qev in 1/4"? I was wondering if it could fill from the chamber side. it would look so much cleaner.
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Unread postAuthor: MrCrowley » Wed Oct 07, 2009 1:39 am

I'm guessing no, but you could modify it to fill from chamber side. Play around with a few springs and the equalization hole until you get it working.
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Unread postAuthor: psycix » Wed Oct 07, 2009 5:00 am

Unmodified you can't. Heat up a needle and poke a tiny hole, add a spring behind the piston and you will be able. However, don't fill it too fast, of course.
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Unread postAuthor: POLAND_SPUD » Wed Oct 07, 2009 6:07 am

you could use a slide check valve or any other 3 way valve instead...
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Unread postAuthor: Brian the brain » Wed Oct 07, 2009 12:56 pm

I have modded the exact same size QEV using the exact same method Psy said.


So yes.
No problem.
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: turner » Wed Oct 07, 2009 6:11 pm

cool thanks guys

so the pilot threads should be 1/4 in also right?
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Unread postAuthor: turner » Wed Oct 14, 2009 5:35 pm

so can anyone help me out which ones the chamber, pilot, and barrel? this thing has no markings
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Unread postAuthor: POLAND_SPUD » Wed Oct 14, 2009 6:38 pm

the perpendicular port is chamber
the one with a screw in cap is pilot side and the opposite is the barrel
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Unread postAuthor: turner » Wed Oct 14, 2009 6:51 pm

are you sure? theres black seal agains the screw caps port
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Unread postAuthor: POLAND_SPUD » Wed Oct 14, 2009 7:45 pm

yes... that's where the piston is
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Unread postAuthor: psycix » Thu Oct 15, 2009 3:57 am

Poland is right.
On the picture above: the top is the pilot, the side is the chamber and the bottom where it stands on is the barrel.
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