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9 Foot Long Pneumatic 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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Unread postAuthor: msg72391 » Wed Apr 19, 2006 3:49 pm

I have a question about ball valves: does anyone know a way to attach a lever to it to make it easier to open? If so please reply.
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Unread postAuthor: boilingleadbath » Wed Apr 19, 2006 3:58 pm

beebs, PVC1 is mearly the specific type of PVC used (there is also a type 2, which is more impact resistant).
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Unread postAuthor: Benny » Thu Apr 20, 2006 6:04 am

i have taken dwv to 1oo psi, its compleatly safe, i mean a soda bottle can take over 161 psi! and its like a 2oeth of a milimetre thick.
also get a nice spring to open the ball valve.
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Unread postAuthor: msg72391 » Thu Apr 20, 2006 11:54 am

How could i position the spring to make it effective?
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