I was actually just drawing out a way to make it a hybrid :D I was thinking I could add propane, pressurize it, then have an electric connection that set off a stun gun with wires going inside the barrel and out towards the muzzle at the same time I pulled back the release. Maybe a little risky, but...

You can't use a bottle cap with this design because then you couldnt put it onto the PVC. And the 1/2" sch. 40 is probably the closest there is. If you put some soap, or even sunblock on it, there's practically no friction while shooting. And the barrel should be longer. This gun was designed for sm...

I've pressurized it up to 150 psi and the only trouble I've ever had was that I needed another hose lamp because one wasn't enough. There's really too many zip ties for anything to go wrong.

I don't know if this counts as a "pneumatic cannon" but it's pretty darn close. I haven't seen any other bottle rocket launchers on spudfiles (although maybe there are some), so I figured I should post it. I got the idea from http://www.sciencetoymaker.org. In fact its nearly an exact copy minus the...

Alright. I'll play around with it a little bit, I'll see what works and what doesn't. Thanks for the input, I've had an experience with accidental firings, not exactly the best day in my life

Is that in his slider?

I'm only shhooting paintballs, I'm not Punkin Chuckin here. The air chamber is about a foot and a half of 2" pvc. Thnk thats a god size?

Btw, I love the video

Yeah, I'll probably go with the presta. How fast will it beagle to fill up e air chamber? Will it significantly restrict how fast it fills? I'm trying to make a semiauto gun, and I want the rate of fire as high as possible

Thanks! Yeah, my friends dad does a lot of cycling, I'm sure I can get one from him. Thanks, I never would've thought to use one of those.

Where would I find something like that? That's pretty much exactly what I need. Wait, isn't that the valve used on bikes? Maybe I'm wrong but that's what's used on racing bikes

Hello all,
I'm trying to find small check valves that I can put into a 2" piston, but everywhereive gone, the check valves are larger than my actual piston.

Does anyone know where I can find small check valves?

It looks like your end caps are DWV, you better rebuild it
Amazing war machine you have there. completely speechless

Thank you so much! these websites are perfect! To be honest, I hate eBay. I've never had a good experience with them. This seems perfect. I'm sure I can find one to use.

thanks! that saves me the stuggle of making my own!

how much do they sell for?