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Airsoft QEV + popoff valve help

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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Airsoft QEV + popoff valve help

Unread postAuthor: isnotaustin » Tue Jul 02, 2013 5:22 pm

hey guys im new to spudfiles but have leaned alot from here and decided to get an account... im mostly here for my new upcoming project wich has become to start to get confusing to me so im here to ask you guys if this setup will work? someone please answer :D B) [/img]
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Last edited by isnotaustin on Tue Jul 02, 2013 5:29 pm, edited 1 time in total.

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Re: Airsoft QEV + popoff valve help

Unread postAuthor: Zeus » Tue Jul 02, 2013 6:09 pm

isnotaustin wrote:Posted 0822hrs


isnotaustin wrote:Posted 0856hrs


Dude, this is a slowish forum, give it a day and see how you go

Now, what's the purpose of the slide valve? Usually you'd use it on the pilot instead. Also unless you've put an equalisation hole in the diaphragm of the QEV, it'll just leak out into the barrel.
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/sarcasm, /hyperbole
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Unread postAuthor: isnotaustin » Tue Jul 02, 2013 6:31 pm

I was going to use the slide valve as a safety for the gun and ok sorry i didnt know
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Unread postAuthor: isnotaustin » Tue Jul 02, 2013 7:24 pm

so does anyone know for sure this setup will work?
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Unread postAuthor: jackssmirkingrevenge » Wed Jul 03, 2013 12:43 am

I'm not sure it would.

That's quite a big pilot area you have there, I don't know if the pop-off's brief "blip" will be enough to fire the QEV.

Why don't you have the trigger feed into the chamber instead?

[youtube]http://www.youtube.com/watch?v=nkibwn6wEns[/youtube]
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Unread postAuthor: isnotaustin » Thu Jul 04, 2013 1:10 pm

Good point so i remove the pressure washer trigger and put it were the slide valve would be ?
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Unread postAuthor: isnotaustin » Thu Jul 04, 2013 1:31 pm

So like this? Im just trying to get the idea even though this looks ugly
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Unread postAuthor: isnotaustin » Thu Jul 04, 2013 3:59 pm

Ok i swear i got it right this time... Did i? Becuase i saw this working in a youtube video i just made a few arrangements
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Unread postAuthor: jackssmirkingrevenge » Thu Jul 04, 2013 11:28 pm

This one is more efficient than this one

In your second diagram, the pressure washer is still trying to fill the pilot directly while the pop-off is trying to empty it. Technically this happens in the first one as well, but you're feeding mainly into the chamber, not the pilot.
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Unread postAuthor: isnotaustin » Thu Jul 04, 2013 11:43 pm

So both will work correct? Just one is more effifient? Becuase id like the trigger to be more gun like than just a bunch of pipes that can shoot
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Unread postAuthor: jackssmirkingrevenge » Thu Jul 04, 2013 11:56 pm

isnotaustin wrote:So both will work correct? Just one is more effifient? Becuase id like the trigger to be more gun like than just a bunch of pipes that can shoot


Your second diagram is essentially this, and that certainly worked :)
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Unread postAuthor: isnotaustin » Fri Jul 05, 2013 12:07 am

Ok im starting to get the idea :) thanks for the help , next time i post ill either need help or have it working xD
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Unread postAuthor: isnotaustin » Fri Jul 05, 2013 12:17 am

Oh one more question ... How do you propose i connect the hpa tank to the gun since paintball setups do not use npt threading? My best guess was going to be cutting the remote line and finding a regular npt brass barbed tube connector thing with those hose clamps ... Would that work ok?
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Unread postAuthor: jackssmirkingrevenge » Fri Jul 05, 2013 12:30 am

http://www.ebay.com/itm/Paintball-High- ... 3f1ff60209

This has 1/8" NPT fittings on each end.

This could connect to your tank, and to the remote line:

http://www.ebay.com/itm/ASA-Paintball-C ... 5af211b144

Alternatively, you can buy 1/8" NPT fittings to connect a remote line normally:

http://www.ebay.com/itm/New-Paintball-Q ... 416f50599c

please do not use hose clamps with HPA... what pressure did you plan on running at?
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Unread postAuthor: isnotaustin » Fri Jul 05, 2013 3:12 am

all of this will be below 200 psi and thanks for the links
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