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Piston Valve Design- feasible?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Piston Valve Design- feasible?

Unread postAuthor: strangers » Sun Sep 16, 2007 10:40 am

Well I have already a lot of how-to's on making piston for my next project, a multi shot pneumatic, and decided that I would make a chamber sealing piston, because it's the one I understood the fastest. Here is m design, pretty self explanatory:
Image
I didn't bother to animate it all the way to the end, but it's not realy neccesary.
And here's the basic design for my gun:
http://h1.ripway.com/Strangers007/Pics/Spudgun/3-shot.JPG
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Unread postAuthor: jackssmirkingrevenge » Sun Sep 16, 2007 10:44 am

makes sense, will be a bit awkward to operate (you should find a three-way valve to replace the ball and sprinkler valves) and what are you planning on a breech reloading mechanism?
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Unread postAuthor: spud yeti » Sun Sep 16, 2007 11:43 am

That design looks pretty good, but does that piston really need the guide rods?
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Unread postAuthor: strangers » Sun Sep 16, 2007 11:43 am

The breech loading is for a hybrid golf /ping pong ball launcher:
http://h1.ripway.com/Strangers007/Pics/Spudgun/BL1-Hybrid.JFIF.
What I could do is replace the ball valve with a sprinkler valve, increase the gap between the valves, reorient the pressure gauge and use the brass for a stock and hold one blow gun in each hand.
I guess it would look something like this:
Image
I don't know if it needs the guide rods, but I'm leaving them just to make sure.
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