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Highly Portable BBMG

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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Highly Portable BBMG

Unread postAuthor: The_Kangsta » Sun Feb 17, 2008 1:23 pm

Here is my first portable bbmg :twisted:

I made it so that I could fight my friends in air soft gun skirmishes. The gun can shoot bbs for about 1.5 seconds after pumping it 20 times, but I only need to pump it several times to load it sufficiently.

Pump System
The gun can be easily pumped up while running so it can be ready to blast the next person around a corner. The Pump is a regular sports pump attached to a 2-way hose splitter with ball valves to regulate flow. After I pump up the pop bottle, the valve that leads to the pump is closed. (yes there are some small leaks). then the valve to the blowgun is opened and it is ready to fire. I epoxied the hose to the 1/2 inch pipe and attached the pipe to the 1/2 inch threaded fitting.


The Gun Itself
The gun i made a while ago but since I dont have a compressor :( I I had to use a shitty 2 inch pipe as an air reservoir which took a while to pump up. So I kind of abandoned the gun for a while until this Idea took shape.
There is a half hole vortex block made of wood in a 1.5 inch pipe. the plunger is a spring from a broken sprinkler (I Found) at my school :twisted:

Overall, the gun is pretty well made except the duct tape parts which I plan to glue on later and the un-pressure rated hose, which is probably ok to do the job because of such low pressures that I pump it up to.
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Attachments
gun.jpeg
The Gun
002.JPG
vortex block and bbs
003.JPG
plunger and endcap
004.JPG
the 2 way valve
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Unread postAuthor: LikimysCrotchus5 » Sun Feb 17, 2008 3:20 pm

I would say its pretty nice.

How is the shooting?
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Unread postAuthor: potatoflinger » Sun Feb 17, 2008 3:34 pm

Looks great, how's the rate of fire?
Also, how well do those ball valves stay sealed?
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Unread postAuthor: The_Kangsta » Sun Feb 17, 2008 5:31 pm

The shootings pretty good, considering that it is charged by a hand pump. The effective range is about 30 meters, which is the bbs accurately hitting a tree at that range. The rof is about 50 rps, but this is with a low air supply.
potatoflinger wrote:Also, how well do those ball valves stay sealed?
The ball valves are consistantly solid, I have to worry more about the bottle busting than the valves, although that hasn't happened yet :?
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Unread postAuthor: Imortal87 » Sun Feb 17, 2008 5:36 pm

very colorful....
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Unread postAuthor: jackssmirkingrevenge » Sun Feb 17, 2008 10:24 pm

The gun can be easily pumped up while running


I would be surprised if it held together while standing still :shock: :D
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Costs

Unread postAuthor: littlebro05 » Wed Feb 20, 2008 1:42 am

you should totally make instructions on how to make this gun...

anyway i was wondering how much this gun costs to make? cause since i live in aus i want to make one to play airsoft with my friends :(

i'm living of press-action glove guns and cap guns XS
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Costs

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Costs

Unread postAuthor: littlebro05 » Wed Feb 20, 2008 1:45 am

you should totally make instructions on how to make this gun...

anyway i was wondering how much this gun costs to make? cause since i live in aus i want to make one to play airsoft with my friends :(

i'm living of press-action glove guns and cap guns XS and i want bb machine guns rawr!!
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Re: Costs

Unread postAuthor: Davidvaini » Wed Feb 20, 2008 1:56 am

littlebro05 wrote:you should totally make instructions on how to make this gun...

anyway i was wondering how much this gun costs to make? cause since i live in aus i want to make one to play airsoft with my friends :(

i'm living of press-action glove guns and cap guns XS and i want bb machine guns rawr!!


http://www.spudfiles.com/spud_wiki/inde ... achine_gun

good place to start... you will learn the different types of BBMG's and the pros and cons as well as instructions on how to make them etc...
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the costs of making one of those

Unread postAuthor: littlebro05 » Wed Feb 20, 2008 5:50 am

it's look pretty mad lol... just wondering how much u reckon it'll cost to make one, i'm interested... doesn't look hard to make
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Re: the costs of making one of those

Unread postAuthor: Carlman » Wed Feb 20, 2008 6:38 am

littlebro05 wrote:you should totally make instructions on how to make this gun...


littlebro05 wrote:doesn't look hard to make


*ghkgykug vguhliuothbj h*
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Re: the costs of making one of those

Unread postAuthor: jackssmirkingrevenge » Wed Feb 20, 2008 6:59 am

Carlman wrote:*ghkgykug vguhliuothbj h*


:D
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Unread postAuthor: Antonio » Wed Feb 20, 2008 12:18 pm

Nice airgun. It just looks as if its ganna fallapart anysecond though. I would intergrate some wooden parts to make it more sturdy.
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Unread postAuthor: The_Kangsta » Wed Feb 20, 2008 10:07 pm

ant wrote:Nice airgun. It just looks as if its ganna fallapart anysecond though. I would intergrate some wooden parts to make it more sturdy.


Ahaha totally! I just had the "ghetto urge" at that moment and duct taped everything together :twisted: Ya but seriously i probably will make it un ghetto soon with some glue and wood
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Unread postAuthor: The_Kangsta » Wed Feb 20, 2008 10:10 pm

anyway i was wondering how much this gun costs to make? cause since i live in aus i want to make one to play airsoft with my friends Sad


Ya i picked up the 1.5 in abs at a construction site but the valve was $5 and the pump i expect to be $5-10 from a sports shop. the fittings were 50 cents to $1
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