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7ft long, metered MAPP injected combustion gun

Built a combustion 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: SpudBlaster15 » Sun Mar 04, 2007 1:48 am

The pressure builds fairly slowly, so I just shut the first ball valve when the guage reads 45psi (calculated using P1V1=P2V2). It is much cheaper than using a regulator, and just as effective.
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Unread postAuthor: noname » Sun Mar 04, 2007 11:46 am

That's what I thought, my friend thinks it's too dangerous or something. I keep telling him, "It's not gonna blow, it's a friggin' half inch thick!"
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