Dual Valve Cannon

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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Moonbogg
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Tue Oct 13, 2009 3:09 am

Um, Tech, something tells me those cannons you are building will prove to be fairly INSANE as you are taking your previously proven design and beastifying it in a properly absurd manner.
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Technician1002
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Tue Oct 13, 2009 3:19 am

Moonbogg wrote:Um, Tech, something tells me those cannons you are building will prove to be fairly INSANE as you are taking your previously proven design and beastifying it in a properly absurd manner.
The goal of the small one is to double the pressure and stored volume due to the higher pressure. It will be a test platform for bumper development. The 100 PSI cannon abuse the bumpers pretty badly. A fix will need to be designed to withstand repeated piston impacts at the new energy levels. The bumper will need to safely slow a heavier piston traveling at higher speed without damage. When complete, this will replace my 2 inch cannon. The tank is slighly smaller than the 2 inch, but will run at higher pressure.

GGDT predicts nice things with the larger valve and higher pressure, even if I screw on a 2 inch barrel. Tennis balls will be lethal.

After the bumper development is proven, then the next step up on the 3 inch is to drive a light gas barrel/piston to launch a golfball well into supersonic with just air. That will take a while.

The 4 inch is simply an insane mini pumpkin chucker.
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Reactor4
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Tue Oct 13, 2009 9:21 pm

hyezzz! pumpkin chunker! great idea for the season! Oh, by the way tech, UHMW is some gooood stuff and I love machining it :D
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