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Goat's 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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Goat's Gun

Unread postAuthor: goathunter » Thu Apr 26, 2007 9:31 pm

This baby has been my pride and joy for the past couple of months.I built it for use at paintball scenario games.I tank hunt so this is my prime weapon.So far I have been very succesful with it 20 confirmed tank kills in the last game.Not to shabby for the first time out.Hope ya'll enjoy and VOTE FOR GOAT!
Specs:

Overall length:40 1/2"
Air chamber:2" sch.40 18" long
Barrel:1 1/2" sch.40 18 1/2"
Valve: Standard sprinkler
Action: single shot
Operating pressure:80-145 psi.
Detachable stock(forgot to add earlier)

And a video of me loading in 5 sec.(sorry vid quality VERY BAD)
Image
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Attachments
DSC00217-1.JPG
Here is the beast........and the cannon
DSC00220-1.JPG
side view showing extra shell holder
DSC00222.JPG
spead pattern of my 24 rd. shotgun load(I accidently aimed a little lo
DSC00221.JPG
The fire control mechanism.The toggle is safety and red is fire
DSC00225.JPG
Ammumnition and respective cartridges.
Left to right:large cartridge,smoke grenade,24rd shotshell,half cartridge,12rd.shotshell,and nerf football.
DSC00215-1.JPG
loaded football
Last edited by goathunter on Fri Apr 27, 2007 11:05 am, edited 1 time in total.

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Unread postAuthor: SPDeathmerchant » Thu Apr 26, 2007 9:44 pm

Thats awesome. More people should post cannons used for paintball. That's the only reason I build cannons at all. Its the greatest game ever!
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IM number 2, cuz im the $h!t

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Unread postAuthor: judgment_arms » Thu Apr 26, 2007 10:22 pm

Nice! You got my vote! If I’m here for voting…
Just one thing, you said you got 20 tank kills, where’s the twenty marks on the side of the gun? You got that flat area around the break hinge, perfect area for kill marks. I’d go for either Roman numerals or swastikas.
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Call me "Judge", it's easier to type.

Spud gun safety rules
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Unread postAuthor: hi » Thu Apr 26, 2007 10:24 pm

thats (sic). i really like your break-barrel. does it leak at all at the barrel when you shoot? what exactly did you do for the break barrel? if you dont mind telling :wink: . is it just a coupler? what ever it is i really like it.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: goathunter » Thu Apr 26, 2007 10:25 pm

Yeah about that :roll: The paint I used the first time around melted off when the paintball goo got on it.And I've been lazy and haven't put the marks on since I've repainted it.The barrel does have a union on it.I took a saw to it and cut it so as to make a clamp on the bushing.No it doesn't leak.I have a gasket on the bushing that seals against the barrel when it closes(the red thing under the union).
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Unread postAuthor: jackssmirkingrevenge » Thu Apr 26, 2007 10:41 pm

judgment_arms wrote:Just one thing, you said you got 20 tank kills, where’s the twenty marks on the side of the gun? You got that flat area around the break hinge, perfect area for kill marks. I’d go for either Roman numerals or swastikas.


That's for aircraft, tank and anti-aircraft kills are traditionally maked by making rings around the barrel:

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Nice gun btw goat :D
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Unread postAuthor: SPDeathmerchant » Thu Apr 26, 2007 10:43 pm

Man...somebody knows their stuff
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Unread postAuthor: goathunter » Thu Apr 26, 2007 10:47 pm

SP I agree,I'm a history buff and that fact slipped me.Alright jack I'll get it right and make rings.It will probably work out better.Any specific color?
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Unread postAuthor: jackssmirkingrevenge » Thu Apr 26, 2007 11:05 pm

goathunter wrote:Alright jack I'll get it right and make rings.It will probably work out better.Any specific color?


Traditionally something which contrasts with the camoflauge, I've seen red, white and black depending on the theatre of operations.
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Unread postAuthor: CS » Thu Apr 26, 2007 11:08 pm

I like it. Never seen a loading system of that design, apparently works well, yet simple in operation, and design. Although I might be scared that the pressure may break the fitting on the barrel over the course of time. Very clean construction, to bad that is bound to go under the wheel in scenario play.

I noticed you mentioned that you sealed the "breaking barrel" joint with a gasket, and I noticed it in the photograph. Is there a chance you have a photograph with a alternative perspective displaying the gasketed connection? I am interested in how you made the joint exactly. Mainly how the sealing face was attached, and positioned.

I never saw it mentioned, but I assume you use some sort of CO2 regulating system in game play? Just interested as to how that works out.

Nice build. I personally enjoy seeing new concepts simply, and effectively implemented.
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Unread postAuthor: skinner » Fri Apr 27, 2007 2:47 am

Very Nice,

I love the break barrel loading technique.
You should really Modify that valve one day, saves $20 on batteries every month.

Other than that, great gun.
good luck.

--Skinner
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Unread postAuthor: -BIGBEAR- » Fri Apr 27, 2007 7:45 am

i love the loading system...really f'ing quality
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Unread postAuthor: Specialist » Fri Apr 27, 2007 8:11 am

that looks like a mass destruction gernade launcher. it looks awesome. im suprised you dont get any leaks with that way of breech loading. cool cannon though.
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Unread postAuthor: goathunter » Fri Apr 27, 2007 8:16 am

Pimpman, got the pics. The union sees no pressure from the gun.It is simply there to hold the barrel in place.The gasket is a piece of 1/8" gasket material that was super glued to the bushing face.I trimmed it down to fit properly.
Skinner,batteries for me are better.The original model was modified but after it broke i went back to electronic.Since field owners are obsessed with safety the ability to have a safety on the gun is a must.Second and most important is the fact of the valve can be repaired when I'm out of state.Total modularity.
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Attachments
DSC00233-1.JPG
Co2 regulating system.Just a spare WGP stock regulator preset to 220psi. I used some leftover ASA's to bring it down to 1/8".The silver line attaches to a tire chuck with gauge.I have a quick disconnect coupler to plug into the gun and fill.
DSC00233-1.JPG (15.04 KiB) Viewed 5887 times
DSC00232.JPG
Picture of sealing face.The barrel not the coupler seals against it.
DSC00231.JPG
inside of union. You can see the small ridge poking out from the bottom of the union,this is the barrel.Rather than use the union to seal the barrel. The barrel pivots on the action and uses that for pressure against the gasket.The action is made out of glued marine plywood(not going to break anytime soon)

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Unread postAuthor: huskeyeskimo » Fri Apr 27, 2007 9:25 am

Wow, dang nice cannon. I love the loading style, havn't seen one like that.
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