"Sabotless" Semi-Automatic Shotgun Concept

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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hectmarr
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Mon Jun 22, 2020 9:18 pm

Doc j: you are right. One possible solution is to activate the valve that lets the compressed air pass, with the compressed air generated by moving the piston to the right, in Jack's drawing. The piston does not need to hit the valve. I think a balanced valve is necessary so that it does not have opening force parallel to the axis of travel. The small spring closes it when once the piston has been pushed to the left, the pressure in the cylinder drops due to the air exhaust through the orifice.
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Jack: The same as you think, I am thinking. With a little low pressure compressed air, and different diameters of the two pistons, you can get a lot of compression compression. I already plan to do some of this to test, but in the near future, when I finish improving the bb's loading system, it does work but it does have small drawbacks from time to time.
It is necessary to solve what observed doc j, so that it works without problem.
Ideas don't make holes. The weapons yes! ;)
Doc j
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Sun Jun 28, 2020 9:28 am

Gettin lost in
What proposed to do.
If drive piston quik.
Would this work.
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hectmarr
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Sun Jun 28, 2020 12:10 pm

Doc j wrote:
Sun Jun 28, 2020 9:28 am
Gettin lost in
What proposed to do.
If drive piston quik.
Would this work.
I don't understand your drawing. Please explain what you mean.
Ideas don't make holes. The weapons yes! ;)
Doc j
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Mon Jun 29, 2020 4:02 am

hectmarr wrote:
Sun Jun 28, 2020 12:10 pm
Doc j wrote:
Sun Jun 28, 2020 9:28 am
Gettin lost in
What proposed to do.
If drive piston quik.
Would this work.
Disregard.
Force output would be significantly less.
Guess at :
If was 30mm I'd cylinder at 7 bar equates to 495 newton's output force shaft. .
If piston became valve I'd. At 7mm cylinder I'd.
Out put be 30.9 newton's using same pressures.
phuong2020
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Mon Jun 29, 2020 10:29 pm

Thank you for sharing useful information. Is this a pneumatic gun?
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