My SPAS12

Boom! The classic potato gun harnesses the combustion of flammable vapor.
ijahman
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hi everyone this is my latest combustion cannon, its not completely finished yet but it is fully functional.
ghetto powaa
sorry for bad sound on video.
many détails and photo later

<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i21.servimg.com/u/f21/11/91/50/07/dscf0024.jpg" border="0" alt="Image hébergée par servimg.com"></a>
<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i21.servimg.com/u/f21/11/91/50/07/dscf0012.jpg" border="0" alt="Image hébergée par servimg.com"></a>
<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i21.servimg.com/u/f21/11/91/50/07/dscf0019.jpg" border="0" alt="Image hébergée par servimg.com"></a>



[youtube][/youtube]
Last edited by ijahman on Fri Dec 03, 2010 3:16 pm, edited 5 times in total.
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ramses
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NICE!!! I love that brass look. Youtube really raped the audio on that one.
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chinnerz
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Looking good mate!
I agree with ramses, you really pulled off that brass look. But yeah, there is a major syncing issue with video and sound, like 1 second or something...

cant wait to see some more vids and pics.
Keep up the good work :) :)
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Looks awsome! So it's breech loaded? Have you tested the power yet? And the range? What is the fuel etc.
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jackssmirkingrevenge
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Even after yourgatling this is still impressive, some details of the fuelling system would be greatly appreciated :) also how are you reloading the projectiles?
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Push button fueling if I'm seeing things right.
ijahman
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<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i21.servimg.com/u/f21/11/91/50/07/dscf0026.jpg" border="0" alt="Image hébergée par servimg.com"></a>

i use butane gas cartridge,
the refueling is full auto,
how it can be full auto???, well, when i move the breech, the valve (behind) is opening, at the same time a fan will reload with fresh air and butane gaz (via an other valve) is coming (butane is regulated with a little valve, same system on my gatling and my RR6)...
so hard to me to explain ...
it's breech loading.
<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i21.servimg.com/u/f21/11/91/50/07/reload12.jpg" border="0" alt="Image hébergée par servimg.com"></a>
firing test my poor bag
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the valve inlet gaz butane and fresh air :
<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i21.servimg.com/u/f21/11/91/50/07/dscf0121.jpg" border="0" alt="Image hébergée par servimg.com"></a>
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wyz2285
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looks amazing i love it :shock: normaly i'm more a pneumatic guy but may be i will build some thing like this :D
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jackssmirkingrevenge
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Very ingenious, shame it's only at atmospheric pressure though - you have the fabrication know-how to make a hybrid repeater ;)

I'm guessing a nice solid pump handle is also on the cards?
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Moonbogg
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Damn it man! Thats nice!
ijahman
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yes a pump will be made.

i've missed another important feature on my spas12,
it's (how i can explain this ?) it's a "hop up " like system..
or i can say : the ball is blocking during explosion with a ring (in rubber), when the pressure goes up the ball is released at maximum pressure.

this result in an upgraded performance in comparaison with other standard system.

do you know what i want to say.
see this :
<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i21.servimg.com/u/f21/11/91/50/07/dscf0123.jpg" border="0" alt="Image hébergée par servimg.com"></a>
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qwerty
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Ahhh so you have intergrated an O-ring abit like jsr's high pressure pop off.
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ijahman
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<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i21.servimg.com/u/f21/11/91/50/07/dscf0029.jpg" border="0" alt="Image hébergée par servimg.com"></a>
my silencer
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It's called a detent. It keeps the ammo in the barrel for longer so higher pressure can build up? Is that what you are trying to say? This thing is pure genious, great job. As JSR said, you could have made it a hybrid but it makes up for the 1x mix with the coolness 8)
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ijahman
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<a href="http://www.servimg.com/image_preview.ph ... u=11915007" target="_blank"><img src="http://i21.servimg.com/u/f21/11/91/50/07/dscf0030.jpg" border="0" alt="Image hébergée par servimg.com"></a>
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