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1-1/4 barrel sealing piston gb gun

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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1-1/4 barrel sealing piston gb gun

Unread postAuthor: homedepotpro » Wed Sep 05, 2007 10:43 pm

this was my first attempt at a piston in a tee, and it wasn't as hard as i thought it would be. the piston is 2'' dia. washers with an o-ring all on a 1/4'' thredded rod. My pilot valve is a 3/4'' sprinkler valve, recycled from an old sprinkler system, can you say "free-bie" At 80psi it will launch a gb 400 yards, in other words, it pwns sprinkler valves. it is 1-1/4'' port because it was nervous that if i went 1-1/2'' i wouldn't be able to get my piston to actuate. well here are some pics.
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suggestion are welcome and wanted, im going to put barrel supports in soon.
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Unread postAuthor: jackssmirkingrevenge » Wed Sep 05, 2007 10:52 pm

Very good, looking forward to higher pressure testing and damage pics
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Unread postAuthor: spud yeti » Wed Sep 05, 2007 11:38 pm

Looks good. Thats some pretty impressive results too :D
Only suggestion: Perhaps paint it if you want to, but it still looks cool enough :wink:
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really good quote/phrase here
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Unread postAuthor: MrCrowley » Wed Sep 05, 2007 11:57 pm

Looks great, Nice and simple, very clean., makes me want to go up to my garage and shoot my 2" barrel sealer :P

Why have a nice, clean, o-ringed piston when you can use a <A HREF="http://www.spudfiles.com/forums/how-to-make-a-pneumatic-cannon-with-a-2-piston-valve-t10381.html">Deodorant can</a> :wink:
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