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first 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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first pneumatic cannon

Unread postAuthor: brad1780 » Wed Jan 23, 2008 9:35 pm

this is my first attempt at a pneumatic cannon. it has a 1" sch 40 by 4 foot long barrel. it uses a 1" lawn genie sprinkler valve with a 2" sch 40 by 2 foot chamber. Besides the out of control primer which will be painted shortly, give me your opinions.
thanks

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Unread postAuthor: ShowNoMercy » Wed Jan 23, 2008 9:37 pm

Please, please tell me you didn't hot glue your accessories in? Other than that nice job.
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Unread postAuthor: LikimysCrotchus5 » Wed Jan 23, 2008 9:38 pm

Very nice

what is the pop off valve rated too (as in when it opens)?
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Unread postAuthor: elitesniper » Wed Jan 23, 2008 9:38 pm

hot glue?? :shock: , nice cannon anywhoo, good way to start off.
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Unread postAuthor: brad1780 » Wed Jan 23, 2008 9:46 pm

i had some VERY MINOR leaks after i screwed the pop off valve in so i just put a little hot glue on there to try to seal it up a bit. worked pretty well. the valve is set at 115 psi.
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Unread postAuthor: ShowNoMercy » Wed Jan 23, 2008 9:47 pm

You should invest in some epoxy, I think it will work better for this purpose. Even some thread sealant.
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Unread postAuthor: brad1780 » Wed Jan 23, 2008 9:49 pm

i just glued it yesterday to get a few test fires in. i plan to fix things with epoxy when i get a chance toworrow.
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Unread postAuthor: pizlo » Wed Jan 23, 2008 9:51 pm

Quite a bit better than my first, which has not been posted here out of embarrassment.
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Unread postAuthor: potatoflinger » Wed Jan 23, 2008 9:53 pm

That's pretty nice, I'll bet it has a decent amount of power. What color are you going to paint it?
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Unread postAuthor: brad1780 » Wed Jan 23, 2008 9:57 pm

i think i am going to paint just flat black. it is pretty powerful. i put a C battery through a fence board from about 45 feet at 60 psi.
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Unread postAuthor: bigbob12345 » Wed Jan 23, 2008 10:30 pm

Very similar to a gun I posted on here recently the chamber is just a little smallerhttp://www.spudfiles.com/forums/ ... 12468.html
Good job all together but get some epoxy
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Unread postAuthor: psycix » Thu Jan 24, 2008 5:36 am

bigbob12345 wrote:Very similar to a gun I posted on here recently the chamber is just a little smallerhttp://www.spudfiles.com/forums/ ... 12468.html
Good job all together but get some epoxy


When I click your link my browser tells me it cant open "smallerhttp://" :P
Fixed link:
http://www.spudfiles.com/forums/my-most-recent-pnematic-t12468.html
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