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.50" cal heavy bbmg

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: frankrede » Tue Aug 08, 2006 12:35 am

In nevada it is illegal to tamper with fire extenguishers. It is alaso illegal for spudguns in city limits. Before I made my combustion=nice resedential nighborhood. After I made it= sounds like a war is gojng on.
that was off topic.sorry
I think I am going to try a fire extengusher bbmg.
Ill replace the hose with pvc.
Drill a hole
hook my paintball hopper to it.
Pressurize the tank. Gravity fed easy peasy!
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Unread postAuthor: MrCrowley » Tue Aug 08, 2006 2:33 am

Steve- wrote:you sly bastard,
1. its not going to work
2. you are prolly going to have to start a fire (like in a garbage can or something)
3. it doesn't take a whole fire extinguisher to put out a little fire

nice try tho, lol


1:ill make it work
2:i can start a controlled fire9its winter here so everyone will understand :wink: )
3:ummm ill pour some more petrol/gasoline on it :twisted:

p.s You have Rugby in Canada?wow didnt realise that. We(New Zealand) just bet Australia in Rugby and won the Bledisloe Cup:D 8)
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Unread postAuthor: djt » Tue Aug 08, 2006 2:56 pm

might work but im sure your parents wont be to thrilled to hear you accidently started a fire when they werent home. they might lose a little trust in you.
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Unread postAuthor: MrCrowley » Tue Aug 08, 2006 11:02 pm

they already have after they specificly(sp?) told me NOT to build my spudgun while they were away in Australia :D
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Unread postAuthor: Brian the brain » Thu Aug 17, 2006 2:12 pm

So here are some pics of my work in progress.
I've tried it, and it seemed to fire just a bit slower than a normal bbmg.However, it seems more gas efficient.
It just made big holes muhahah!!

I put it in a vice for this picture so the grip cannot be seen.Construction glue is drying at the moment.

I fired it using the Halon gas wich is still in the extinguisher, wich is at lower pressure than what I'll be using later.Too bad I only had 5 marbles to try it.Gotta buy me some more!!!
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Attachments
Marble MG 001.jpg
Seen here is the "magazine"and the "rise tube"as I shall now call it.Since it's not very similar to the other designs out there...
Marble MG 002.jpg
Nice small pressure gauge.Soon to be removed and replaced by a schrader valve.The gauge will go on the sawn off.
Marble MG 004.jpg
Overall peek of the entire gun.Note the front "tommy-gun"style handle.
This marble MG is meant to be fired from the hip.( See how messy my workshop is?)

I just sprayed it with some black paint, cause I HATE red!!
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: MrCrowley » Thu Aug 17, 2006 10:51 pm

nice cannon, your workmanship is good 8) Is the handle by the gauge in the vice?
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Unread postAuthor: WOW!! » Thu Aug 17, 2006 11:42 pm

Nice job on that, what is the PSI of the bottle?
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Unread postAuthor: Brian the brain » Fri Aug 18, 2006 11:24 am

Yes the handle is in the vice next to the pressure gauge.The working pressure of the bottle is 13 bar, but I'll use it at 16( 250 psi)

It should hold up nicely.
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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: schmanman » Fri Aug 18, 2006 11:28 am

Make it shoot slingshot bb's.
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Unread postAuthor: Brian the brain » Fri Aug 18, 2006 11:33 am

You make it shoot slingshot bb's!
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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: schmanman » Fri Aug 18, 2006 11:37 am

I already made a small gun that puts slingshot bbs through a metal trash can. marbles will be better than slingshot bb's,but you could shoot them out like buckshot. that's all I meant.
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Unread postAuthor: Brian the brain » Fri Aug 18, 2006 11:52 am

Can't get them here.Hence my answer.
I would like to have ball bearings or something, but they are too expensive.
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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: MrCrowley » Fri Aug 18, 2006 5:02 pm

WTF are slingshot BB's? bad thing about marbles they come in different sizes like you get 12 different sizes in a bag and it pisses me off :!: i need like a "Universal" marble ball size so i know what size barrel to get
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Unread postAuthor: saladtossser » Fri Aug 18, 2006 6:24 pm

MrCrowley wrote:WTF are slingshot BB's? bad thing about marbles they come in different sizes like you get 12 different sizes in a bag and it pisses me off :!: i need like a "Universal" marble ball size so i know what size barrel to get


lol professional competition grade standard size marbles.
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Unread postAuthor: schmanman » Fri Aug 18, 2006 6:40 pm

they are are 5/8 and 1/2 inch steel balls that are sold at pretty much any sporting goods store that sells paintball guns, pellet guns. or slingshots. they are just like ball bearings,but have a little flat spot on one side from when they forged by dropping drops of molten steel from a couple hundred feet in the air into a cold tank of water. I put a bag of them through a car hood. excellent buck shot :twisted:
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