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another portable cloud

Built a BB Machine Gun? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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another portable cloud

Unread postAuthor: dungdue0 » Sun Dec 31, 2006 9:44 am

Most BBMGs aren't portable but I used a fire extinguisher I had lying around, I modified it to be refillable via bike pump. Now it's pretty light and comfortable. The cloud chamber is just an old nutmeg container and the barrel is a bic round stic pen. The chamber can hold around 250 rounds of 6mm BBs. I can get about 4 seconds of constant flow from the fire extinguisher and that's enough air to empty about 100-130 bbs, all around 240-260 fps with 90 psi.

Image
Here's how many bbs it can hold.
Image
I added a little grip just for comfort.
Image

It holds like a P90, this all I really need in a match, it's pretty fast shooting little gun, semi-powerful.

Here's one from an older model of the gun that shot 6mm beads.
[url=http://s44.photobucket.com/albums/f12/puggy55/?action=view¤t=IMG00003.flv]Image[/url]
Here's a newer movie, don't be fooled by the weaknees of the looks of this vid.
[url=http://s44.photobucket.com/albums/f12/puggy55/?action=view¤t=IMG00014.flv]Image[/url]
It was shot from 15ft. (measured) back, here's how many BBs went into it.
Image
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Unread postAuthor: Bluetooth » Sun Dec 31, 2006 10:03 am

Thats cool. 4 seconds doesn't seem like much :( .
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Unread postAuthor: experament-u2 » Sun Dec 31, 2006 10:54 am

still would kick ass to shoot ur freinds wen there not looking :twisted:
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Unread postAuthor: shud_b_rite » Thu Feb 01, 2007 4:44 am

I know this post is a bit old now but I am just interested in finding out how you made the fire extinguisher fillable by bike pump. How did you get the valve into a hole you drilled at the base of the fire extinguisher? Is it just a normal car tyre valve?

That is an awesome mini and you have just sparked an idea in my head. Any help or links would be great.
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Unread postAuthor: MrCrowley » Thu Feb 01, 2007 5:21 am

He used a threaded schrader valve....which is a car tyre valve/bike valve.
He drilled a hole, used a 1/8 ir 1/4" tap to mkae threads, and threaed it in.
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Unread postAuthor: COD_FILLETS » Wed Feb 07, 2007 9:35 am

I think it's nice to see more portable clouds/strafers. Nice idea of using the fire extinguisher as a air tank.
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Unread postAuthor: Brian the brain » Thu Feb 08, 2007 11:39 am

I suggest turning the cloud chamber 180 degrees and getting a longer barrel.It will be more compact , but with a lot more power.
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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: singularity » Thu Feb 08, 2007 7:47 pm

you should see my "portable" vortex gun i put a 5 gallon air tank in a back pack, then made a short hose using compression fittings, and connected it to my full sized vortex gun. went over to my friends house last month and we played airsoft. i was in their tree fort bunker with a few other kids, the other team decided it would be good to try charge tactics as they had used successfully before. it was total devistation, they charged at my virtually silent (because of its long barrel) insanely fast firing vortex gun, they had no idea what was happening until they were hit.
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be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
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Unread postAuthor: VH_man » Wed Feb 14, 2007 12:20 pm

Isnt that a bad idea to be shooting people with something that can rip holes through sheet metal?
just a thought...... if its safe then im making one for airsofting otherwise i dont think i will ever make a poratble strafer.....
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Unread postAuthor: lukemc » Wed Mar 07, 2007 11:00 am

you should mount a mini bike pump on the side
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