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AMSG-Anti-material-Spud-Gun

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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AMSG-Anti-material-Spud-Gun

Unread postAuthor: EVGman » Sun Mar 04, 2007 6:16 pm

Hi This is my first gun that i've made.
It all started when we were doing hydraulic and pneumatic projects in science class(I am in Grade 8)so i had the idea for a pneumatic powered spud gun.It was a good choice, i got a 98%.

The air tank is 1 1/2 Abs
The barrel is 3/4 pvc i think(its white)
It uses a 3/4 not yet modded sprinkler valve but i will be soon
For now im using a wall adapter with converter for the solinoid

I use the pressure gauge on my compressor so there isn't one on it
I also have some damage pics at 10 psi!

PICTURES AT
http://colinspud.piczo.com
.....Yes im only 13
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Unread postAuthor: noname » Sun Mar 04, 2007 6:51 pm

Get rid of that ABS immediately. It isn't made for pressure and should never be used in a pneumatic.
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Unread postAuthor: Pete Zaria » Sun Mar 04, 2007 7:05 pm

EVGman,
Sorry to say, but noname is right. The black ABS pipe is NOT pressure rated and IS NOT safe above about 60PSI. You should switch to NSF-PW PVC parts. If they don't say NSF-PW they're not pressure rated (even if they're SCH40, that's just the wall thickness, NOT a pressure rating).

Nice design, clean construction. Keep it up!

Peace,
Pete Zaria.
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Unread postAuthor: imablackskater » Sun Mar 04, 2007 7:19 pm

that is a nice gun except for the abs i agree that you should change the chamber
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Unread postAuthor: EVGman » Sun Mar 04, 2007 7:20 pm

Good Idea
The only reason i used abs is beacuse it was the only one i could find!
I don't go over 40psi tho even
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Unread postAuthor: risto » Sun Mar 04, 2007 7:20 pm

even if you're only using 10 PSI, ABS is very risky to use on pneumatics. But with your build layout, it shouldnt be too hard to replace with NSF-PW parts.

But like Pete Zaria said, MAKE SURE IT HAS THAT WRITTEN ON THE PIPE! Some pipe even say what their PSI rating is. I always use pipe that is pressure rated to 260 PSI and pressurize it to a MAX of 200.

Stay safe!!
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Unread postAuthor: frankrede » Sun Mar 04, 2007 9:33 pm

If hes staying under 40 psi then theres no need to switch, as long as he doesn't leave it pressurized for a couple of hours.
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Unread postAuthor: TwitchTheAussie » Mon Mar 05, 2007 12:07 am

Dude your tiny!!! Nice cannon though :D
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Unread postAuthor: experament-u2 » Mon Mar 05, 2007 12:32 am

that is a huge cannon for a little chap
i like the design tho good job
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Unread postAuthor: mark.f » Mon Mar 05, 2007 6:42 am

I'd definitely make the recommendation to switch to pressure rated parts for your next cannon. Other than that, only thing I need to say is that the name is... taken already.
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