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Shotgun testing (damage pics)

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Shotgun testing (damage pics)

Unread postAuthor: )DEMON( » Sat Aug 26, 2006 5:15 am

I got my shotgun working and did some tests today. All tests were done at 50 psi and the shotgun is quite powerfull. This would be longer but earlyer when I had half of my post done the internet turned off. Here's some pics.

*yay, the pics are not in order!
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Attachments
cuctus2.jpg
Hammer round in cactus. Shot from 10m away.
cactus1.jpg
Tumbler round ripped past the cactus, the red line indicates the path of travel.
hammer,-apple.jpg
Hammer round passed straight through the apple, ripping it up and splitting it because of the tail.
hammer,-apple.jpg (18.88 KiB) Viewed 1884 times
bolt-round,-apple.jpg
Bolt round punched through apple.
coke-can,-hammer.jpg
Hammer round passed through the can but the tail stayed in the can. Can was filled with water.
shotgun-apple.jpg
This was a shotgun round, the small bb's have little power because they are light but all of the penatrated and knocked the apple back.
shotgun-can2.jpg
One bb penatrated, can was empty.
shotgun-can1.jpg
Can was filled with water
metal-bb's.jpg
I put a ball of tightly packed tissue down the barrel then metal bb's and some more tissue. This was a sabot.
metal-bb's.jpg (18 KiB) Viewed 1884 times
proto.jpg
Here is my shotgun set up with my prototype chamber, can is also seen.
proto.jpg (15.63 KiB) Viewed 1884 times
ammo.jpg
Seen from top to bottom, Tumbler round, Hammer round, Bolt round
Forever dreaming...
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Unread postAuthor: MrCrowley » Sat Aug 26, 2006 5:41 am

nice damage pcis :twisted: how come you only tested at 50psi?
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Unread postAuthor: )DEMON( » Sat Aug 26, 2006 6:06 am

My pump won't go past 55psi. It has a pressure gauge on it that goes up to 200.
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Unread postAuthor: schmanman » Sat Aug 26, 2006 6:57 am

nice. why didn't you shoot at any metal ?
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Unread postAuthor: )DEMON( » Sat Aug 26, 2006 7:19 am

I don't have any spare car hoods lying around. On Monday I am picking up a 20oz co2 tank for this baby, then all I need is a regulator and some fittings. And a better exhaust valve but I don't know what kind of exhaust valve to get.
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Unread postAuthor: schmanman » Sat Aug 26, 2006 7:28 am

you could shoot through cans. for a piolet get a ball valve , thats what brian the brain uses. high pressure,and easy to open
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Unread postAuthor: )DEMON( » Sat Aug 26, 2006 7:35 am

Can't you see my shotgun in the first pic? It has a ball valve. Don't they make high pressure sprinkler valves or something?
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Unread postAuthor: Brian the brain » Sat Aug 26, 2006 9:50 am

No they don't.That's why I use ball valves to excaust.You can bend the handle on it to look more like a real trigger.
Drill a hole in the handle and you can add a spring.
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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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Unread postAuthor: schmanman » Sat Aug 26, 2006 2:02 pm

oops, I didnt look close enough . I was under the impression that you wewe still using a one way/check valve. :oops:
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Unread postAuthor: saladtossser » Sat Aug 26, 2006 2:07 pm

you know, if i was to shoot a cactus, i would eagerly await the moment it just explodes like a melon shot by a 50 cal. thats one tough cactus lol, nice pics and nice work
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Unread postAuthor: Bluetooth » Sat Aug 26, 2006 2:20 pm

Nice cannon but where is the tumble round damage? What size pipe and is it all the same size?
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Unread postAuthor: )DEMON( » Sat Aug 26, 2006 3:54 pm

It might be kind of hard to see the damage on the cactus, I have shot them often. If you look closely you can see where pieces have been knocked off. The round only brushed the side. That cactus is more than 12m tall and as hard as a tree.

I am unsure of the size but the ball valve is 1/2 inch. I really want to fire this thing at high pressure but I can't because there is no means of pressurizing it that high. I want to do so much to this gun but I don't have enough money right now, I need a job :P When I have time I have an old pc keybourd I would like to use as a target.

It is coming along nicely, by October everything should be sorted. Look forward to see this thing when it is finished 8)
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Unread postAuthor: Bluetooth » Sat Aug 26, 2006 6:21 pm

I want to build something like this but it would be made out of pvc and all be .5" and it would be a barrel sealing diaphrahm but i dont know what size the T has to be.
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Unread postAuthor: Benny » Sun Aug 27, 2006 4:21 am

Awesome, the dammage to the apple with the shotgun round was cool.
I cant wait to you get a CO2 setup so you can go to higher pressures.
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Join the spudshot forum!!!!!

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Unread postAuthor: )DEMON( » Sun Aug 27, 2006 4:29 am

Depending on what type of regulator I get I am hopeing 200psi per shot. Tomorrow is Monday, sucks because of school, yay because of cylinder. I would like to weld up the prototype chamber so it is only two pieces.
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