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Re: "Sabotless" Semi-Automatic Shotgun Concept

Posted: Mon Jun 22, 2020 9:18 pm
by hectmarr
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.

Re: "Sabotless" Semi-Automatic Shotgun Concept

Posted: Sun Jun 28, 2020 9:28 am
by Doc j
Gettin lost in
What proposed to do.
If drive piston quik.
Would this work.

Re: "Sabotless" Semi-Automatic Shotgun Concept

Posted: Sun Jun 28, 2020 12:10 pm
by hectmarr
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.

Re: "Sabotless" Semi-Automatic Shotgun Concept

Posted: Mon Jun 29, 2020 4:02 am
by Doc j
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.

Re: "Sabotless" Semi-Automatic Shotgun Concept

Posted: Mon Jun 29, 2020 10:29 pm
by phuong2020
Thank you for sharing useful information. Is this a pneumatic gun?