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All Aluminum 2" Diaphragm Valve 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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All Aluminum 2" Diaphragm Valve Cannon

Unread postAuthor: Atattack » Sun Nov 20, 2011 5:44 pm

It took me awhile to complete this but it is finally done. Thanks again to all of the members on here who helped me with this.

Air Chamber-3" x 24" Aluminum Schedule 40
Barrel #1-3" x 40" Aluminum Schedule 40
Barrel #2-2" x 48" Aluminum Schedule 40
Valve-Goyen 2" Dust Collector Diaphgragm Valve
Trigger-Lincoln Blow Gun modified and welded to gun
Handle-Aluminum Picatinny Rail welded to bottom of barrel with adjustable handle

I originally had threaded fittings but found those would strip too easy so I bought some aluminum flanges and had those machined down and cut off the excess metal on sides to make it as light as possible.

I have not had a chance to fire it yet but I can't wait. I am planning on using 2" barrel for general ammunition and the 3" barrel for water balloons.
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Atattack
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Unread postAuthor: Atattack » Tue Nov 22, 2011 6:15 pm

Planning to shoot this weekend, will post some damage pics hopefully soon.
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Unread postAuthor: jackssmirkingrevenge » Tue Nov 22, 2011 6:22 pm

Ah, there you are, I had missed this!

Certainly one of the beefiest first time builds I've seen, looks like it will take a good couple of hundred psi...

I would put some rubber or foam padding on the shoulder rest for heavier projectiles, even though it's quite hefty there will be some recoil.

Love the tacticool foregrip in the middle of all the plumbing :D

let's see this in action!
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Unread postAuthor: Atattack » Tue Nov 22, 2011 6:24 pm

Some padding is definitely in order. Still trying to figure out what material to use. Thanks for compliment and help jack.
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