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Homemade scuba tank air cannon

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Homemade scuba tank air cannon

Unread postAuthor: AircannonSweden » Sun Oct 30, 2011 5:41 pm

My homemade scuba tank air cannon that i built myself. I build a new cannon now so pics come when it are finished.

Some facts: The tank i got from my dad. i shoot 60 meters with 1 bar. I don't know what pressure welds can withstand so I fill the tank with very little air. AND IT'S NOT TAPED ALL THE WAY,IT ARE FITTINGS THAT HOLDS EVERYTHING TOGHETER

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Last edited by AircannonSweden on Sun Oct 30, 2011 5:55 pm, edited 1 time in total.
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Unread postAuthor: Goats spudz » Sun Oct 30, 2011 5:47 pm

you should be able to put 500 psi in that.
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Unread postAuthor: AircannonSweden » Sun Oct 30, 2011 5:53 pm

Yes i know but i don't know how the welds can withstand :?
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Unread postAuthor: Goats spudz » Sun Oct 30, 2011 6:03 pm

because its a steel tank designed for pressures up-to 6000psi and when you weld both the rod and the steel from the tank melt together people have plastic penguns made with pen and epoxy and they can withstand 400psi
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Unread postAuthor: AircannonSweden » Sun Oct 30, 2011 6:07 pm

Ohhhh thanks for the tip mate :)
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Unread postAuthor: Technician1002 » Sun Oct 30, 2011 7:05 pm

Hydrostatic test it.
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Unread postAuthor: Goats spudz » Sun Oct 30, 2011 9:17 pm

i agree with Technician1002 fill it with water and pressurize it to about as high as you can go and if it leaks, weld over it ;D
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