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Simple 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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Simple Cannon

Unread postAuthor: PVC Arsenal 17 » Sat Dec 29, 2012 3:09 pm

This is hardly worthy of a post given what people here have accomplished since my last submission. Nevertheless, it's still a cannon so here it is.

Image

Image


This cannon is actually part of a matched pair. Right now it has an improvised 1" barrel on it which I used for testing. In the coming weeks both will be made into auto-loading golf ball cannons. They will be hopper fed and loaded by a hollow bolt much like a paintball gun.

They both feature a 1" piston-style QEV with a 3/4" slide valve.
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Unread postAuthor: Lockednloaded » Sat Dec 29, 2012 4:10 pm

Wow, where'd you source two 1" QEV for less than an arm and a leg?
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Unread postAuthor: PVC Arsenal 17 » Sat Dec 29, 2012 10:01 pm

eBay, same with the giant slide valves... All of them were impulse buys ("Woah, a giant QEV! ... Woah, a giant slide valve!") and now I'm finally getting around to making use of them
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Unread postAuthor: Brian the brain » Sun Dec 30, 2012 8:22 am

This is hardly worthy of a post given what people here have accomplished since my last submission. Nevertheless, it's still a cannon so here it is.


A simple, well put together cannon is always worth posting.
I am convinced that they are more fun in the long run.



Still 17 after all these years huh?
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: PVC Arsenal 17 » Thu Jan 03, 2013 12:02 am

21, actually. :lol: I've been here a while...

Here's a pointless video of me shooting air at some dirt...

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Unread postAuthor: Brian the brain » Thu Jan 03, 2013 8:17 am

21, actually. I've been here a while...

I know..
Hence the joke... :roll:

Hopefully we'll soon see them working with the hopper/ bolt assemblies..
:D
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: watto » Wed Mar 13, 2013 9:41 pm

Is that a 1" QEV or 20mm? I think I just bought the same one
http://www.ebay.com.au/itm/XQ171500-G1-2-Female-Thread-Air-Flow-Control-Quick-Exhaust-Valve-/350638547727?pt=AU_Business_Industrial_Industrial_Supply_MRO&hash=item51a3afa30f

1st time on SF for 3 years so may have forgotten but how exactly does a slide valve work? when its slid forward is the fitting open on the inside, then when you slide it back it shuts off the air from the compressor side and lets air out the collar?
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Unread postAuthor: dewey-1 » Wed Mar 13, 2013 10:08 pm

That is a basically a 1/2 inch QEV. The 20mm measurement is the nominal pipe outside diameter.
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Unread postAuthor: Jarrado » Thu Mar 14, 2013 12:31 am

And here I thought that true 3/4 were as big as they came... /:
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