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how to make an airgun with airstopper?

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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how to make an airgun with airstopper?

Unread postAuthor: spud-freak » Tue Oct 12, 2010 5:03 am

hello guys
i'm looking on youtube for homemade airguns, i found a video
with an airstopper at the end.
then i have build a qev airgun and i wont to make the same, but when i mount the airstopper, the gun doesn't work because the piston won't open
why?
thanks for help

the video:
http://www.youtube.com/watch?v=DeRnZeZps4g

and my airgun:

Image
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Unread postAuthor: Crna Legija » Tue Oct 12, 2010 5:09 am

idk what you mean by airstopper but your lucky because wyz2285 is a member here at spudfiles.
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Unread postAuthor: lemming124 » Tue Oct 12, 2010 5:33 am

by airstopper do you mean blow gun/ hose gun/ pilot valve?
maybe the qev is the wrong way around?
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Unread postAuthor: ilovefire » Tue Oct 12, 2010 5:51 am

do you mean the part that he uses to achieve semi auto? if so youll have to post picks or a diagram of the one you made before anyone can tell whats wrong
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Unread postAuthor: jackssmirkingrevenge » Tue Oct 12, 2010 5:53 am

A picture of your piston would be helpful, is it a tight fit in the tee?

Probably what is happening is that more air can flow past the piston than can flow out of your "airstopper"
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Unread postAuthor: spud-freak » Tue Oct 12, 2010 6:25 am

i mean the part, that make the gun semi auto! at the end of the grip
you can see it on 1.55
how do i made this?
when i load my gun, it doesn't work because the piston of the qev won't open, it has not enough air to blowback the piston..
i mean when i have mount this "part that makes it semi auto.."airstopper"
do ya understand?
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Unread postAuthor: Crna Legija » Tue Oct 12, 2010 6:43 am

read through this thread
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Unread postAuthor: spud-freak » Tue Oct 12, 2010 6:57 am

oh thank you very much!
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