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S.W.A.T gun by schmanman

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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does it look evil?

heck yes
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no
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anything but evil!
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anything but evil!
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Unread postAuthor: schmanman » Mon Oct 30, 2006 7:26 pm

the cannon. sorry the pic's crappy. If you look close, you can see the barrel goes from one side of the picture from the other. I will get a video of it shooting a dirtbike motor tomorrow. oh, the white barrel laying next to it is a 10 foot long, 1 1/2" diameter one, just to put the 20' one to scale. I am getting another 3-4 foot long section of the pipe so i can sharpen he front, and make a muzzle knife.

Image

Image

The box that triggers it all.

a video of it, shooting 1 1/4 inch fiberboard counter top at 25 psi with a potato, and the 20' long aluminum barrel.

http://media.putfile.com/spud-and-1--fi ... -25-30-psi

damage pictures

http://www.putfile.com/schmanman/images/43342

more pics of it before paint job

http://www.putfile.com/schmanman/images/43348

after paint job (I love putfiles!)

http://www.putfile.com/schmanman/images/43351

random pics of it (different than the ones in the other folders)

http://www.putfile.com/schmanman/images/43371
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Unread postAuthor: VH_man » Sat Dec 09, 2006 11:56 pm

WOW. that is the biggest cannon i have EVER seen. and i thought Joel's Mega Launcher was huge.
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Unread postAuthor: Recruit » Sun Dec 10, 2006 1:29 am

That is schmanman's pride and joy VH_man.
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Unread postAuthor: schmanman » Mon Dec 11, 2006 8:20 am

I kinda lost track. I've shot things over 1000 yards before. thanks! :D
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Unread postAuthor: CpTn_lAw » Mon Dec 11, 2006 11:04 am

hey i just have a questio for ya shmanman, you never talk about shoting stuff, about a 100psi? i always see this annon shoot stuff at 25-35 psi...it must be very impressive and deafening at 100psi though...
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Unread postAuthor: schmanman » Mon Dec 11, 2006 3:20 pm

well, I have taken it up that high a couple times, and it is incredibly loud. It is almost no good for shooting distance at those pressures, because you only find your ammo 20% of the time. and you cannot See it while it's in the air. I will take a vid of it shooting something at 100 psi in the spring, for you. :D :wink:
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Unread postAuthor: Bluetooth » Fri Jan 12, 2007 7:10 pm

You really need to try for a mile. Something light and aerodynamic might be able to do it.
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Unread postAuthor: schmanman » Fri Jan 12, 2007 7:31 pm

I know I could do it, but I would not be able to find the ammo afterwards. :D :lol:

I have the space, though. :lol: 8)
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Unread postAuthor: schmanman » Fri Jan 12, 2007 8:53 pm

I've shot 1000 yards as it is, and there are 1760 yards in a mile, so I will go for it with a 6-ish inch long, thin wall aluminum rocket with a slightly weighted nose cone, and sprial tailfins (flexible) to increase stability and range. it will be strong and light. I will film it, but I will not take the swat up past 40 psi in the winter. 100 psi should put it at a mile, and if It doesn't, than I will add 15 feet onto the barrel temporarily. 100 psi, a big piston valve, 10 feet of 6" airchamber, and 35 feet of 2" barrel should shoot about a mile, wouldn't you say? :wink: :twisted: :D :lol:

wow, I used those Emoticons a couple too many times there. :lol:
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Unread postAuthor: killagorrila99 » Fri Jan 12, 2007 9:05 pm

If you made a couple of modifications you could use dual piston valves :idea:
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Unread postAuthor: judgment_arms » Fri Jan 12, 2007 9:06 pm

Hey I just ran the thing though the GGDT, guessed at the valve, but it said that you’re about 200FPS away from the sound barrier, maybe you should try and brake that…never mind according to the GGDT if you use a 1oz. projectile you’ll shatter the sound barrier. But I may be stating the obvious… have you broke the sound barrier? Will you try?? Am I as crazy as I sound???
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Unread postAuthor: Bluetooth » Fri Jan 12, 2007 9:09 pm

Yeah I might say that... 2280 more feet than you have so far just think in feet
1000 yards is 3000 feet and there are 5280 feet in a mile so 5280 - 3000 = 2280 :lol: .
EDIT: Your very crazy, now let the nice men in white coats take you away.
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Unread postAuthor: schmanman » Fri Jan 12, 2007 9:32 pm

I have broke the sound barrier with paintballs. how many psi did you put in to ggdt?

oh, bluetooth, thanks. I take pride in my INSANITY! :D :lol:

killa, instead of adding another piston valve, I am going to increase porting to 3". should blow the crap out of stuff even better * laughs insanely, falls out of chair*
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Unread postAuthor: judgment_arms » Fri Jan 12, 2007 9:49 pm

I put in 100PSI. but a mile isn’t impossible, it’ll just take some modification, like another valve, and two more pressure chambers…. Basically double the gun. Then you’d be pushing two miles
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Unread postAuthor: Bluetooth » Fri Jan 12, 2007 10:04 pm

I was actually kinda talking to judgment_arms about the crazy thing because
judgment_arms wrote:Hey I just ran the thing though the GGDT, guessed at the valve, but it said that you’re about 200FPS away from the sound barrier, maybe you should try and brake that…never mind according to the GGDT if you use a 1oz. projectile you’ll shatter the sound barrier. But I may be stating the obvious… have you broke the sound barrier? Will you try??Am I as crazy as I sound???
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