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my 1st pneumatic

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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my 1st pneumatic

Unread postAuthor: unisonmind » Wed Jan 24, 2007 9:53 pm

so this is my 1st pneumatic cannon. my chamber is a old welding tank that can take 600 psi easy,a 600 psi ball valve and a 1.5 pvc barrel that i got from my old combustion cannon. ya i know its a simple one but it has some power. ive only tested it up to 150 psi. so leave your comments and tell me what you think


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Last edited by unisonmind on Wed Jan 24, 2007 10:22 pm, edited 2 times in total.
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Unread postAuthor: killagorrila99 » Wed Jan 24, 2007 9:59 pm

Well well well! Very nice indeed. Ever thought of burst disks? They are alot easier to use than most other valves.
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Unread postAuthor: unisonmind » Wed Jan 24, 2007 10:02 pm

no whats a burst disks?
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Unread postAuthor: MrCrowley » Wed Jan 24, 2007 10:38 pm

Its a disk of material placed in a union,and when the chamber gets to a certain pressure it will blow open,only problem is you cant trigger them(unless you make a triggered one like gorts)You have to keep replacing the burst disk and putting it in the union and sometimes they tear istead of blow open.They can be a pain but can have alot of flow and are cheap(homemade) But if you want to take this up to 300psi+ you'll have to make a piston valve(dont ask just search)and replace your barrel with a sch80 one.
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Unread postAuthor: Flying_Salt » Wed Jan 24, 2007 10:42 pm

Great work, but you might want to change out the barrel and upgrade to a piston valve if you want to take it to high pressures.

EDIT: MrCrowley beat me...
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Unread postAuthor: Hotwired » Thu Jan 25, 2007 3:48 am

I wouldn't bother messing with burst valves, not when you've got a pneumatic.

They're for hybrid cannons to hold back the pressurised fuel/air mix then burst when the mix is ignited because nothing else reliably opens at the right time (unless you spend some serious money).
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Unread postAuthor: unisonmind » Thu Jan 25, 2007 1:13 pm

ya so i just orded a new golf ball barrel and im lookin for a 300 psi dump valve cuz a piston valve is just much mod work for this gun but im going to make a piston for the next one
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Unread postAuthor: medievalman » Thu Jan 25, 2007 4:55 pm

+Nice Paintjob. But ball valves hae really slow opening times, and upgrading the valve would increase the performance ALOT!
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Unread postAuthor: ballad of NJ » Sun Feb 04, 2007 12:02 am

next time try pvc if your a begginer easyer to work with but otherwise nice gun and design
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Unread postAuthor: frankrede » Sun Feb 04, 2007 12:46 am

ballad of Nj, that is the biggest lie I have ever heard.
Metals can be easy to work with and have alot of things that Pvc doesn't offer.
Mostly safety and aesthetics.
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Unread postAuthor: MrCrowley » Sun Feb 04, 2007 2:26 am

ballad of NJ wrote:next time try pvc if your a begginer easyer to work with but otherwise nice gun and design


Well he's certainly no no0b. He may be new to the forum(like you) but that is a nice high quality 'smoothbore'. Why did you ask him to try PVC if he's a beginer? He's obviously experienced or he knows what he is doing and he is skilled at it. I don't considor that to be a beginer gun. Without the ball valve and a barrel sealer in its place that would be a really really nice gun. And if you have the money I wouldn't turn back to PVC if I was you.
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Unread postAuthor: dippydodo03 » Mon Feb 05, 2007 3:22 pm

very nice gun. i'd like to make one like that. isn't it heavy?
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Unread postAuthor: unisonmind » Mon Feb 05, 2007 11:31 pm

ya its like 23lbs but i have a tank thats about 6in smaller for my next gun
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Unread postAuthor: cb4289 » Wed May 16, 2007 4:08 am

try making one in the shape oof a assult rifle it would look cool. :idea:
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Unread postAuthor: gjohng » Tue Jun 19, 2007 7:20 pm

what is the black "bottle" that is holding the compresses air?

whats it called?

co2 tank?

thankyou in advance for any help :)
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