We build full scale civil war cannons that can fire in 2" - 3" and even 4" We have beefed up welding tanks for air pressure. Our cannons were originally built to launch rolled t-shirts into the stadiums for college civil war games. You can see some of our cannons at
Jesse <me-yahoogroups@...> wrote:
Actually pneumatic guns are, in some ways, more dangerous than combustible. Combustion guns only shoot at around 20 to 30 PSI whereas pneumatically operated guns can shoot at over 100 PSI. So there's the danger of the speed of the projectile. There's also some danger in the idea of a pressurized PVC tank. PVC is known to explode into tiny pieces at larger pressures. And PVC wears down with age so the older the gun the more the "oh darn, that wasn't supposed to happen" factor increases.
In my opinion Pneumatic is definitely more fun with more choices to experiment with. Although some of the above contingencies are few and far between, don't just assume that since nothing is exploding it's safe. If ya want a few plans for pneumatic guns drop me a line and I'll put together a few links...
Writer of "Fries With That?" www.absoluteopinion.com
Alexander Holman wrote:
New to the group, have built several combustion cannon up to a
3.00 calibre and one for frozen water bottles that went through 1"
at 30yrd. This was all fun but would like to build a pneumatic gun
because my nephew is now old enough to get in on the fun but don't
the idea of him using cumbustible fluids if I am not around, so I
I will start him off with air power. So when he is legally
for himself then maybe I'll let him go for butane power. The only
pneumatic gun I ever built was in the 10th grade for an engineering
project that shot ping-pong balls and used only .9psi. Should be fun!
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