The sawn off pneumatic (Contest)

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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LucyInTheSky
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This is my new copper pneumatic, it uses a 1/2" Quick-Exhaust valve acctuated by a 1/2" Ballvalve. I bent the ballvalve so it acts like a trigger.
Chamber: 550mm x 22mm
Barrel: 600mm x 22mm
Valve: 1/2" Quick Exhaust Valve
Volocity:156m/s
Here are some pictures:
The whole thing, only 75cm long.
This gun was inspired by Brian the brains sawn-off shotgun, its not as good but close enough :D .
It is a kind of longer thiner (shiny) version.

Pics.
Image

I turned down the threads of a 1/4" Dissconnect fitting on my inprovised lathe (put it in a drill chuck) then slid it in some bent 15mm pipe and soldered it in there.

Image
Last edited by LucyInTheSky on Sat Sep 23, 2006 3:09 pm, edited 3 times in total.
If your getting chased off a police dog, try not to run through a tunnel then onto a small see-saw then through a ring of fire. They are trained for that!
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killagorrila99
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haha now your just plain copying btbs guns!
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LucyInTheSky
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Maybe I got slight inspiration from them, :lol:
If your getting chased off a police dog, try not to run through a tunnel then onto a small see-saw then through a ring of fire. They are trained for that!
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killagorrila99
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pfft "slight"? its called copying, get with the program man, btw nice gun!
"I'm sorry, Mr.Bush cant come to the phone right now, He's playing cleudo with Mr. Cheney And he has him in the Cupboard with a broom stick" -White house receptionist.
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LucyInTheSky
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Thanks, TBH the reason I acctualy made this was I was my other one is too powerful for back yard use.
I acctually made the back bit like brains cos thats what I had, that whole gun only cost £2.75 as I only needed to buy one bit the rest I had in my garage.
If your getting chased off a police dog, try not to run through a tunnel then onto a small see-saw then through a ring of fire. They are trained for that!
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Brian the brain
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Well..First of all...I've never used a QEV...

Second..I woul'dn't call a 75 cm gun...sawed off..

Third...I ....don't know..okay??!@?

hehehe...it's not a copy.Barrel and chamber are closer together in my designs.I hate that wide open look.
I like compact.I would "elbow" the chamber back up.
Or rent a pipebender to get a nice flowing design...
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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LucyInTheSky
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Do you mean like my other gun with the 2 45s?
If your getting chased off a police dog, try not to run through a tunnel then onto a small see-saw then through a ring of fire. They are trained for that!
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Brian the brain
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exactly. Although I modified ome of the fittings to get the same effect.
I used a 28-22-28 mm Tee to connect the chamber to the 28-28-28- tee the valve is in.
I filed the 22 threads off until I could slip a 28 mm compression ring over it.Used a lot of teflon to make the ring seal over the partially filed threads.
Pretty tricky, because I had almost no room to apply the teflon, once the "cap"and ring were on the 22mm side of the Tee.
I connected the two Tee's INTO each other for a compact look.
That was the major factor for the sawed off look.
I did the same thing with a 22-28 reducer, wich holds the barrel.I filed it until it could fit a compression ring (28mm) over it.
This leaves you with the original 22 mm "inlet"of the reducer to hammer in a piece of 22mm, with a compression ring already on it, as your barrel port.
So no I have a 22 mm port, 28 mm Tee as a piston housing, and a 28 mm barrel.

Well...if you want to copy it...you now know how to..
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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LucyInTheSky
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Well in stead I am going to get a length on 35mm copper for the chamber so it can be alot shorter.
18cm instead of 55cm.

Here is what what it should look like:

Image
If your getting chased off a police dog, try not to run through a tunnel then onto a small see-saw then through a ring of fire. They are trained for that!
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MrCrowley
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it looks way better if you do that.
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noname
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I'd agree with crowley on that one.
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Benny
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Where did you get the QEV?
Join the spudshot forum!!!!!

F*ck the bunny... i got a fishy ><>
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LucyInTheSky
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http://www.airlines-pneumatics.com

UK based so probly wont ship to US
If your getting chased off a police dog, try not to run through a tunnel then onto a small see-saw then through a ring of fire. They are trained for that!
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Benny
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Naa mate..... AUSSIE AUSSIE AUSSIE, OI OI OI.
Join the spudshot forum!!!!!

F*ck the bunny... i got a fishy ><>
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LucyInTheSky
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Heres the pics of my new update, I took brian the brains advice from another thread to make it more compact:

Image

Image

Image

And this is the sight down the barrel, I added a front sight to add to the shot gun look.

Image
If your getting chased off a police dog, try not to run through a tunnel then onto a small see-saw then through a ring of fire. They are trained for that!
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