90 degree diaphragm?

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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Velocity
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...similar to <a href="http://www.spudfiles.com/forums/viewtop ... &">this</a>?
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noname
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PVC Arsenal/Atlantis already beat you to the link. :wink:
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clide
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Longshot from the spudtech forums make several guns with a similar type of valve for a science fair project. Here are some cutaways of his valves that he used for demonstration.
http://www.alexsterling.com/cannons/valvecut.html

pimpmann, the valve with 45 degree faces actually worked, it just didn't actuate well and had significantly less performance than a standard tee valve of the same size.
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