first coaxial plans

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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sandman
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:facepalm:
duh i knew that
maybe i should just go back and stick with rocketry
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jean
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Joined: Thu Dec 13, 2007 12:23 pm

yes i´m a noob but when you use a endcap as piston change the side where the sealing face is.
like this..
http://www.spudfiles.com/forums/files/piston_203.jpg
the pilot volume is smaller, barrel is longer and chamber is bigger.

jean
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BigJon
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Joined: Wed May 30, 2007 12:21 pm

I guess that would work but it might restrict airflow a little.
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Easterbunny
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Joined: Wed Jan 02, 2008 1:24 pm

wait am i goanna need a bumper?
if so will a pice of foam work?
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sandman
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Joined: Thu Mar 15, 2007 6:59 pm

people like to use pool noodles

but if your using foam it has got to be some tough foam
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