I see I see. Makes sense.

If the wad say was secure and air tight, would the bb's damage the inside of the PVC (over time) as they exited? Or is that negligible?

Talked to the full auto guy, got some tips on the magazine. So that's good.

I had another question, anyone on this forum ever attempt to make a shotgun cannon? I have some bbs/ball bearings lying around, and was just curious if anyone had attempted this.

I'm assuming the PVC barrel wouldn't be up ...

thanks man! And good work on the gun...it's an inspiration

How did you make the magazines to hold the AA batteries. I'd like to create a semi-auto version and need to come up with a good magazine design to hold AA batteries. Any suggestions?

Hah! That's funny. Yeah, you're right, it is pretty cool. Although he has to lug that compressor around, and I couldn't afford to waste that much ammo.

I will however, ask him about how he made those magazines.

Thanks all!

Has anyone seen a good idea for loading AA batteries into a spud gun? I would like the gun to eventually be magazine fed the AAs. I wonder if there isn't any good magazine ideas out there.

Bolt action would work too, but isn't preferred if possible.
-Rich

Ahhhh yes. I see. Duh. My mind was still fixated on the fact that the extinguisher was specifically selected for its natural trigger capacity. I guess it's still safer holding air than PVC.

I just realized that although this is a great setup, it doesn't quite work with my setup, due to the fact that the extinguisher does not supply a continuous flow of air to fill up any reservoir. In fact, it is the reservoir, and air is "triggered" out of it by squeezing the handles.

I could modify ...

Phenomenal! I love it. Thanks for the very in depth explanation. It's perfect for my research needs. I'll go about finding a way to implement this.

Thanks again everyone.

Thanks Mr. Tallahassee.


I guess what I am hoping to do is to create a simple piston that'll push enough air volume to increase the velocity of the AA batteries (or other projectiles, though it may make more sense just to stay with the AA ammo for now), while not bleeding/emptying out all the air ...

Thanks Killerbanjo, gonna investigate this more. Looks like a great solution.

This is gonna sound real newb and stupid, but just so I understand simple piston mechanics correctly:

If air from the fire extinguisher (about 100psi) enters a simple chamber with a simple piston that is driven forward ...

Hey guys,

Newbie here. Just built my first simple air cannon. I call it the "Scorpion", based on the PVC bipod and other scorpio-aesthetics. You hold it like an RPG to fire.

It's muzzle loaded, for now (something I would like to change), and the WHITE PVC is just structural, none of it is glued ...