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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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Unread postAuthor: MrCrowley » Sat Jan 12, 2008 7:46 pm

A 1.5" sprinkler valve would cost a fair amount more then the 1".

You could make a co-axial, where the barrel is inside the chamber.

4" chamber 3' long, with a 4' or 5' 2" barrel.

You will have to make a piston, but that's not to difficult and you will get a huge performance increase.

<A HREF="http://www.spudfiles.com/forums/piston-valves-explained-visually-t8157.html">Piston valves explained visually.</a>

A co-axial piston valve is the first animation.
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Unread postAuthor: ALIHISGREAT » Sat Jan 12, 2008 7:57 pm

Also what does IED stand for.

improvised explosive device (i think) :)
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Unread postAuthor: Novacastrian » Sat Jan 12, 2008 7:57 pm

ThatGuyDan wrote:ok ok.. U are right.. its more "hybrid" than pneumatic.. but.. it is just an intricate noise maker... nothing fires outta it.. well.. fire does.. but no projectiles.. just gets them thinking about being engaged.. then we rain down on them with paintballs and stuff.. I guess if you are still interested in it.. i can take pics of it on Monday..


Yes, please take pictures of your noise maker! I am very much interested in the way that it works, cheers Dan.

Edit: You are correct Allthisisgreat.
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Unread postAuthor: Ragnarok » Sat Jan 12, 2008 9:15 pm

What a neat use of spudguns!
That's a nice twist on a conventional design, especially with the digital DP.

I have to say the power isn't phenomenal, but I suppose you can't get too powerful or you'll run a severe risk of injuring someone.
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: ThatGuyDan » Sat Jan 12, 2008 9:42 pm

it's a lot more powerful when we unscrew the 3" barrel and screw on the 1" barrel.. SSSSHhhhh.. don't tell my boss..
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Unread postAuthor: dewey-1 » Sat Jan 12, 2008 9:46 pm

--
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Last edited by dewey-1 on Sun Apr 20, 2008 11:23 am, edited 1 time in total.
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Unread postAuthor: goathunter » Sat Jan 12, 2008 10:21 pm

Go Dan!

Just an idea. Why don't you convince your CO that you need to drop by a scenario game down south to "check out simulator ideas".I guarantee that a few of the scenario teams down here will blow your socks off with the simulator stuff(not literally).The Camp Blanding, FL games attract quite a few exotic paintball weapons.


On another note.What does the Army use to simulate a flash bang in training?My scenario team wants me to come up with a few "poppers" for a tactical tournament.The best I could come up with was a 209 primer in a tube.Needless to say my ears were ringing for a half hour after that initial firing.

:shock:
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Unread postAuthor: DYI » Sat Jan 12, 2008 10:23 pm

Well, if your ears were ringing for 30 minutes after, you can tell that at least the "bang" component worked.
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Unread postAuthor: goathunter » Sat Jan 12, 2008 10:50 pm

Yes it did.I was in my shop about 100 ft. away from my house.When I popped that thing off. Everyone in the house came running out wondering who had the shotgun.
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Unread postAuthor: jackssmirkingrevenge » Sun Jan 13, 2008 12:17 am

Very good job and nice to see a practical application, however there is one minor niggle:

we use an oxygen bottle to fill it because it is easier while we are in the field...


I would strongly advise against this due to the dangers of detonation.

As an example, this Theoben air rifle was filled with oxygen instead of compressed air. Here's the aftermath:
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Unread postAuthor: tomthebomb137 » Sun Jan 13, 2008 12:42 am

i think its great to see this kind of collaborative thinking from a whole bunch of ppl going twards helpin our guys out=] and iv had a lot of fun with these anti tank pnuematics for paintball senarios, i always get stared down by every one cause they got their small ball valve guns, and i come out with a semi auto piston valve laucher :roll:
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Unread postAuthor: Novacastrian » Sun Jan 13, 2008 1:25 am

jackssmirkingrevenge wrote:Very good job and nice to see a practical application, however there is one minor niggle:


we use an oxygen bottle to fill it because it is easier while we are in the field...


"I would strongly advise against this due to the dangers of detonation."

I was wondering when someone was going to mention that, i thought the same thing but was not sure that the pressure would cause the Oxygen to detonate (one would have to be using some kind of Petroleum lubricant though, is this right?)
At least Dan the man wears a skid lid and goggles i spose.
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Unread postAuthor: jackssmirkingrevenge » Sun Jan 13, 2008 1:33 am

Novacastrian wrote:I was wondering when someone was going to mention that, i thought the same thing but was not sure that the pressure would cause the Oxygen to detonate (one would have to be using some kind of Petroleum lubricant though, is this right?)


Of course it needs something to oxidise with and some sort of spark to ignite, so detionation is a lot less likely in a PVC launcher than a metal hammer-valved PCP, but I thought I'd mention it for completeness' sake.
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Unread postAuthor: mtronic » Sun Jan 13, 2008 3:39 am

now people cant say that spudders are delinquent kids since the US forces gather intel from us :D perhaps some goverment funding is in order? :lol:

Dan my man like people have said, chuck the smaller diameter barrel on it make it about a foot and a half longer and I'd keep the chamber the same size.

Keep up the good work, cant wait to see some more vids of it in action.
Say safe :salute:
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Unread postAuthor: tomthebomb137 » Sun Jan 13, 2008 11:42 am

i agree with mtronic, i could deff use a spudgun grant :D
and i allso agree that you should keep this realativly simple, so a longer barrel should surfice
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