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4" piston valve

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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Unread postAuthor: Technician1002 » Thu Apr 30, 2009 1:32 pm

jmccalip wrote:
But won't a piston cannon of that size need to roll back so the recoil is dissipated? It might be too much stress for the fittings.

You are thinking in terms of explosive ordinance. When you analyze an air cannon, All the pressure is already there sitting.. Waiting.. :)

It's already holding all the peak force that it can deliver. All we are doing is opening up one side of the pressure container to eject a projectile. You do want to spread out the projectile force, but you do not need a spring recoil system.
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Unread postAuthor: grock » Mon May 04, 2009 11:26 am

hey guys, i messed up a little, posting the pictures not only in a different thread, but a different forum. the pictures are here

http://www.spudfiles.com/forums/4-inch- ... 18112.html

normally id redo it on this thread, but my computer is all screwey right now
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