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3" piston coaxial help

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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3" piston coaxial help

Unread postAuthor: singularity » Tue Jan 09, 2007 6:46 pm

well im making a coaxial pneumatic with a 3" camber and a 1" barrel. that would mean i need a 3" piston. my idea was to get a 2" cap and a 2" plug glue them together and use them as the back bone to a 3" piston, then i would put them in a section of 3" pipe and dump some hot glue in to make the piston. now i have a question; would this work? or would the piston be to long?

cannon length - 40 inches
camber diameter - 3 inches
barrel diameter - 1 inch
piston coaxial

ps- how should i support the barrel inside of the chamber?
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Unread postAuthor: noname » Wed Jan 10, 2007 5:43 pm

Tye piston will work fine, just leave enough room for it to slide back.
As for the barrel support, just use pieces of pipe, for that gun, I'd use 3/4" or 1" PVC, not sure which.
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