Jspb Semiautomatic Barrel
Posted 13 July 2004 - 10:07 AM
Do you have a working model?
Posted 13 July 2004 - 12:35 PM
Posted 13 July 2004 - 04:01 PM
Posted 13 July 2004 - 04:21 PM
The added advantage here is that you get the entire barrel physically cycling forward and backwards which leads to interesting magazine possibilities.
Posted 13 July 2004 - 04:47 PM
So long as you could regulate the air before it got to the check valve, it looks good.
Posted 13 July 2004 - 05:19 PM
This concept would be air-consuming, because once the rubber pad stops air-flow, you must return the barrel back which loses the extra pressure in that chamber. Also, the pressure would drop greatly with each shot, making a dual-valve system much better.
Posted 13 July 2004 - 06:31 PM
Posted 13 July 2004 - 07:27 PM
The more I look at it, the more I like it. The air is regulated by the hose handle, the check valve keeps it moving one way, and it has room for lots of improvement.
Just find an effective way of making the barrel reloading via a clip system, and add a constant air source (IE, an HPA Tank), then you have something that is capable of some major foamy action. With the HPA tank, you are able to use the inline regulator to control pressure, and it is more stable than Co2, plus more effective than a simple PVC compressed air tank.
Posted 13 July 2004 - 09:44 PM
Posted 14 July 2004 - 01:07 AM
Posted 14 July 2004 - 09:43 AM
They run from about $80 for a steel 40ci to around $400 for a Smart Parts Air w/ Max Flo. You can snag a decent one for about $150-160.
You could skimp out and use a $20 Co2 tank, but they are very unpredictable when it comes to pressure ratings. Fluxates way too much.
EDIT: Gah, changing it to the way I did it makes it so you can't use most kinds of clips. You'd have to use either a gravity fed or a spring right on the barrel. Hmm...
Edited by Ragornocks, 14 July 2004 - 10:14 AM.
Posted 17 July 2004 - 09:58 PM
and i agree that the two valve sytem would work better, and take less tinkering than this system. the fact that there is a stage where the valve is completely open is the problem, because you rely on the speed of the hose trigger to keep all you pressure from rushing out. if you want a valve without this problem, why not just use the semi-auto valve by zero, in the mods section of this very site :
ok, i know that you just wanted a critique of a new idea, but if you're trying to build a gun there you go.
and it would be awesome if you actually got a valve like that to work, despite all the doubters have said.
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