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HEAVY ARTILLERY!

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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not
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Total votes : 9
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HEAVY ARTILLERY!

Unread postAuthor: killagorrila99 » Fri Sep 22, 2006 4:22 am

I built this gun as a last attempt to outdo Brian. I dont think I have, And and waiting untill my AK47 replica is done. I call its heavy artillery because, um well its very heavy(full metal) and it probably take out a plane with the golfball barrel at 400 psi.

The ball valve is modded and i used a micro timer (measures very short amounts of time) of my friends and he said it opens in 28ms! WOW!! I left the accuator at my grandparents house so no pics of that yet. I am also goin to add a wooden suport. All in all this is a good gun!
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Attachments
artillery.JPG
With the marble barrel
artillery2.JPG
ball valve
artillery3.JPG
with my foot for a bad size comparisin
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Unread postAuthor: GalFisk » Fri Sep 22, 2006 4:59 am

Everything that's metal is good :P
How are you actuating the ball valve? I've seen a few cannons actuated by either spring or a pneumatic cylinder. It won't measure up to a piston valve, but it's easier to build with limited materials/tools.
Are you running thet gun at 400 psi? I'd be a bit concerned about the PVC parts at that pressure (what's with the PVC anyway?)
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Unread postAuthor: killagorrila99 » Fri Sep 22, 2006 5:28 am

I use a spring to open the valve. The pvc is an addapter for the barrel. I have only once taken it past 250 psi.
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Unread postAuthor: POS » Fri Sep 22, 2006 9:16 am

Be carefull with that, the whole pressure comes out in the PVC part, even for am very short of time (some mms's) Could explode is the ammo got stuck in the barrel.

BTW, I was wondering how you hope to outdo Brain with a balvalve :lol:

Anyway, at 250 psi, this seems a pretty powerfull gun. I would change the PVC-part for a metal one though, just to be sure.

What kind of ammo do you use ?
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Unread postAuthor: LucyInTheSky » Fri Sep 22, 2006 9:44 am

Thats a very nice gun, I like metal.

But sorry to say it will not come close to out doing any of brians gun, especially the dominator.
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Unread postAuthor: Brian the brain » Fri Sep 22, 2006 11:00 am

Well the dominator is out of the contest.I withdrew it.
Just to avoid controversy about it not being a new gun ( just the sawed-off with a CO2 set-up attached)

For that same reason I hesitate to enter Hard Copy, although that now has a 16mm I.D. 60 cm long barrel, different excaust valve, reloading capability and a silencer in the works.
If y'all say it can be considered a new gun, I'll enter it.
It does have more new features than old I guess.
Just the vallve housing and the chamber are the same.
Whatever...
I always hate discussions about something other than the topic, so...

Gorrillah, I'm sorry, but a ballvalve will never do as your main valve if you are trying to win the contest.I'd say back to the drawing board...
You have the materials and powersource to make a very, very powerfull cannon.
You have stated before you can make piston valves, so why this??
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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: killagorrila99 » Sat Sep 23, 2006 12:37 am

Brian, I chose a modded ball valve for this gun because I didnt want to make it too complicated. I allready had most of the parts (one of the chambers is from my MMG, It stopped working :evil: ) I also planned this gun to be a massive piston valved gun with a golf ball barrel. I will do this soon but it's as is for the moment. I will NOT Be entering this thing in the contest. It is absolutley not my best work. The piston valve will be ready by next week, and I will have pics this time!!
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Unread postAuthor: killagorrila99 » Sat Sep 23, 2006 8:45 pm

POS wrote:Be carefull with that, the whole pressure comes out in the PVC part, even for am very short of time (some mms's) Could explode is the ammo got stuck in the barrel.

BTW, I was wondering how you hope to outdo Brain with a balvalve :lol:

Anyway, at 250 psi, this seems a pretty powerfull gun. I would change the PVC-part for a metal one though, just to be sure.

What kind of ammo do you use ?


Um Marbles and Golf Balls.
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Unread postAuthor: Urban Ninja » Sun Sep 24, 2006 8:16 pm

I love all metal guns. Nearly all of my guns have been all metal. You should paint it black.
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Unread postAuthor: killagorrila99 » Mon Sep 25, 2006 3:32 am

I Will! Althoug im basicaly gunna scrap this gun for parts. Maybe Ill remake my MMG???
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Unread postAuthor: Velocity » Mon Sep 25, 2006 5:37 am

It didnt seem like the MMG lasted very long... what happened to it?
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Unread postAuthor: killagorrila99 » Mon Sep 25, 2006 5:42 am

I gave up, the valve broke :( :( :( :( :(
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