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First attempt at BBMG. New video.

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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First attempt at BBMG. New video.

Unread postAuthor: Boomer58cal » Sat May 10, 2014 4:07 pm

Well I thought I'd take a crack at a BBMG. Pretty simple, a blow gun, 40" of 1/4" 300 psi hose and a 36" 1/4 brake line. I hid most of the magazine( 1/4' hose ) inside a standard 4" end cap and a threaded 4" end cap pressed together. The mag holds 250 rds and feeds great, although I will probably make a larger mag. 250 rds lasts about 1 sec. I shrouded the barrel with 1" PVC for strength.

This is just a prototype and is powered straight off my compressor right now. I have a 3" x 24" sch 40 chamber for it, but haven't glued it together yet because I wanted to see how much air this thing needed. I have 6 small HPA tanks I'd like to use at some point. They are the ones that are about a foot tall.

It's a little on the getto side but it only took about 2 hours to build and it worked the first try.

Sorry no vids yet. I haven't been able to upload to YouTube for some reason.

Edit... it shoots .177 bb's not air soft.

I added a short video. 250 rds doesn't last very long. I know... Need to cut the grass. It was the first time the sun had come out in months, give my a break. :wink:
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Speed loader
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You can already see a fine coating of copper building up inside

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Re: First attempt at BBMG. New video.

Unread postAuthor: PracticalProjects » Fri May 23, 2014 4:54 am

Nice! fires much faster than mine for some reason :L
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Check out my other projects in more detail at
http://practicalprojects.weebly.com/projects.html or my YouTube channel https://www.youtube.com/channel/UCOiczv ... eJ14PfMCNw
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Re: First attempt at BBMG. New video.

Unread postAuthor: Boomer58cal » Fri May 23, 2014 7:10 pm

Well thank you sir. I got the idea from a bbmg that was posted here a few years ago, the only thing I really came up with myself was hiding the magazine inside a pair of the end caps. If you push the pressure up to 120 psi it will fire 250 rounds in about half that time. The video was only at 70 psi. The larger in diameter you coil the magazine the faster it will fire.

This one is very slow when it comes to loading the mag, so I'm working on a cloud style now. I should get 50 rounds per second for 20 seconds with my backpack airsupply. Here's a short vid of a recent test firing I did.
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Attachments
IMG_20140522_213436-1.jpg
The pack will have 7 24x3 sch 40 tanks. Or about 5.1 gal.
IMG_20140522_213436-1.jpg (17.62 KiB) Viewed 679 times
IMG_20140523_175027-1.jpg
Here's the basics gun so far. I'll post the whole thing when I get it finished.
IMG_20140523_175027-1.jpg (5.19 KiB) Viewed 677 times
Last edited by jrrdw on Sat May 24, 2014 7:06 am, edited 1 time in total.
Reason: Fixed video.

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