150 bar 15mm caliber piston valve beast

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Vadim
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Wed Aug 28, 2019 9:31 am

Hi
I've made a very powerful pneumatic gun based on a piston valve. It looks ugly but it's a prototype yet, because i don't have enough money and needed tools now to finish it. But it still shoots. Tested with paintballs and 15mm steel balls(barrels are exchangeable). I've been able to launch the paintball at 1175 fps at 120 bar and almost crash through the 25mm thick wooden board. 15mm steel balls measured at 1050 fps at 150 bar.
Chamber – stainless steel pipe. Volume is something around 115cm³.
Attachments
The front
The front
The back
The back
0.35mm steel(paintball again)
0.35mm steel(paintball again)
The gun itself
The gun itself
The piston
The piston
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jackssmirkingrevenge
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Wed Aug 28, 2019 11:38 am

Great work! Is it a spring ball valve that pilots the piston? To be honest with this kind of setup you can achieve practically the same performance using the ball valve as the main valve directly...
hectmarr wrote:You have to make many weapons, because this field is long and short life
brandon2513
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Fri Aug 30, 2019 7:20 pm

Vadim wrote:Hi
I've made a very powerful pneumatic gun based on a piston valve. It looks ugly but it's a prototype yet, because i don't have enough money and needed tools now to finish it. But it still shoots. Tested with paintballs and 15mm steel balls(barrels are exchangeable). I've been able to launch the paintball at 1175 fps at 120 bar and almost crash through the 25mm thick wooden board. 15mm steel balls measured at 1050 fps at 150 bar.
Chamber – stainless steel pipe. Volume is something around 115cm³.
I like this a lot, maybe add a stock? 8)
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Xamllew
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Tue Sep 03, 2019 11:50 am

Holy crap, 1050 fps with 15mm bearings? You've got energy comparable to modern mid-caliber handguns.
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