help with semi automatic airgun

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Nikolai1939
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Wed Jan 05, 2022 8:54 pm

Hello there. I'm planning to make a semi automatic air carbine, but I'm not familiar with QEVs and air cylinder pistons, so heres two questions:

1- can I use this style of blow gun to divert pressure to the pneumatic pistol and thus push it forward? Or can I only do it with a solenoid 3 way valve?
2- can I connect the reservoir directly into the blowgun handle like in example A by closing off the QEV air entry (marked as 1) and putting a shredder valve at the back of the reservoir to fill it up from there? Or would it need to be done like example B?
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huntsman carbine.png
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farcticox1
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Sat Jan 08, 2022 8:18 am

I did the piston thing with my 10mm, it ran off 2 valves, was pretty complicated for what it did but worked great.
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farcticox1
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Sat Jan 08, 2022 8:24 am

This turned into a semiauto by making a simple spring loaded piston, I'll find some pictures. If I was going to build another semiauto I would do this again.
viewtopic.php?f=29&t=26658
This is how the piston works, the block is aluminum.
piston.jpg
piston.jpg (11.86 KiB) Viewed 237 times
I made it from a piece of nylon and a bolt
20200822_190607.jpg
20200822_190607.jpg (19.39 KiB) Viewed 237 times
semiauto (1).jpg
semiauto (2).jpg
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