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Having problems friring

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
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Having problems friring

Unread postAuthor: Obctg » Sat Jan 13, 2007 7:52 pm

ok so i know my gun fires so here is my question

i have a detachable barrel. the male adapter is 8" from the combustion chamber. if i load a projectile behind the adapter, it gets hung up, if i put it in fron of it, most of the pressure escapes via the adapter and the projectile barely moves.

i have a 60.5"x2" barrel

any help or advice welcomed
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Unread postAuthor: Torch » Sat Jan 13, 2007 8:10 pm

Male adapter..Im a bit confused, care to explain more? :?
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Unread postAuthor: Bluetooth » Sat Jan 13, 2007 8:14 pm

Its a male threaded adapter. Anyway I don't understand please explain it more elaborately.
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Unread postAuthor: Torch » Sat Jan 13, 2007 8:27 pm

If you sand down the threads on the male adapter it will screw into the female adapter better, then glue a o-ring on the end of the male adapter so it seals inside the female adapter. That should fix the problem.

Heres a poorly drawn pic.
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Unread postAuthor: Obctg » Sat Jan 13, 2007 11:27 pm

ill try it tommorow
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