lol my 1st pneumatic :)

[mtronic]

yeah Ill paint the chamber some day.....maybe lol. I would be more inclined if it were pvc. Ill probably do it when i get a sprinkler valve and such

[lukemc]

the pop bottle presssure is easy. if you see it star to bulge stop! they will expand befor the pop

[spud yeti]

Nice looking cannon.

Its kinda ghetto but I'm ghetto all the way so it fits

I dont see much ghetto about it, other than the pop bottle, which isnt REALLY ghetto. But I prefer "non-ghetto" cannons any day.
But well done.

[mtronic]

I just figured that a ball valve made me ghetto


I got an interview for a new job today so I'll have some more duckets coming in soon. Booyah = more cannons for me

Nice looking cannon.

Thanks for the compliment though, I try to make quality items. I'm still new to this, so its trial and error.

Edit: Im going to try to make a bi-pod for the front so it helps when I put the laser on it

[mtronic]

I've got the laser and it came with a little tac light too. I also have a mini compressor that goes to 250psi Time to build a proper chamber and get a sprinkler valve I think. Bi-pod in the works.


Edit: My barrel is about 70cm(28") atm, should I make it a bit longer if I'm going to using around 120+ psi?

[spud yeti]

That sound cool with the bipod/laser.
Probably dont need to make the barrel longer, but test barrel length on GGDT.

[mtronic]

I tested my cannon on a bombed out old van wind screen yesterday, I'm happy to say that at 140 psi a size 4 sinker went clean through it and fractured the laminate and still had enough to dent the back boot panel. Do I love my little pneumatic or what? I may never bother with a combustion again.

[spud yeti]

Im glad to hear you air evolved to air
Im also glad you like your cannon, but what is next?

[mtronic]

Well I'm thinking of a cannon with a mod sprinkler valve and inter-changeable barrels.
I'm also trying to find a used fire extinguisher bottle for a chamber(does anyone think that the trigger of an extinguisher would be able to dump air fast enough to be an effective trigger? It would be nice to kill two birds with one stone).
I'll probably design it as an under over to keep it portable and it would be nice if it had a stock of sorts. I'm sure I can figure something out

[spud yeti]

It sounds really cool. I was also wondering about the valve on a fire extinguisher. Good luck for your cannon though. How big is it going to be?

[mtronic]

Thanks Id like to keep it kind of compact, so barrel 20mm and about 1 meter and I'm not sure how they measure extinguishers but i think it's in kg so about between 1.5 and 3 kg would be fine I suppose.

I'll definitely post it when it's done, no doubt I'll have a few questions though.
Word

[spud yeti]

Nice

[Panzerfaust]

Nice gun, i am still amazed at how much those thin-walled soda bottles can hold. You should try seing what kind of anti-fire capability it has without water. the air blast alone could probably put some stuff out. As others said, make sure ur carefull firing water if you make anything bigger, i broke my big gun (with hand made piston valve) firing with water. Recoil blew gun out of my hand and it snapped upon hitting the floor. A busted gun is no fun.

[mike1010]

nice and simple i like it the fire fighting thing seems sorta impractical

[mtronic]

thanks for looking at my canon

yes its impractical in this dimensions but the over all concept of using a small amount of water and vapourising it has potential.
this kind of method is used to keep the trucks from catching on fire in a blow over.
It could also be used to put out fires on power polls too. Of course they water canons would not be as small and simplistic as mine but the principle could be used