I just tried to download a copy of the old GGDT program, and he page won't load for me. Is the download page gone?

Daltonultra, I don't recall seeing that thing. It's an absolute monster! That thing can really chuck a can. I'm working on a new design and I was going to make it big enough to launch soup cans, but I decided to make another soda can launcher. I already have a soda can launcher though, so maybe I s...

Moonbogg wrote: ↑

Tue Mar 31, 2020 4:05 pm

Welcome back, Gunfreak. NOW BUILD SOMETHING! I might design a large bore soup can launching monster. I think my next cannon should have enough recoil to just about put me on my ass. It's called for.

Did you forget about ME?

Well, so much for ANYTHING... My damn Jeep fried the bearings in the rear axle. If it's just the bearings, it'll get warrantied, but if the ring and pinion is damaged, they'll say the gears caused the bearing failure, and I'm up shit creek without a dollar. And it needs a steering rack and a transfe...

GGDT agrees with you, but I'm still set on the design. Although, I'm dropping the barrel size to 3" so I can stick with firing #2 cans. I'm going to price out steel pipe and fittings tomorrow. If I can get steel at a reasonable price, I'll be firing it as a hybrid, which I think will make it the lar...

I'll have to shop around some, I guess. McMaster is showing steel prices higher than PVC. I'll check out my local supplier on Monday.

Well, so much for that idea, then. At least, a coax is completely out of the question in steel. If I want to try it, I'll have to use a T piston valve and run a smaller chamber size. Or wait months to set aside enough spare cash for the kind of pipe size I really want. 6" steel is expensive... Well,...

(I welded something!! something useful!! lol) A useful skill for building devices containing pressurized fuel air mixtures... all hope is not lost ;) trimmed piston skirt for larger intake opening I say... There's no poll but dogs or cats? I'm a dog person I'm not even a person person. I am especia...

Preliminary knowledge: what is your electronics experience? You should be able to use the chamber itself as ground, and then feed in + voltage through insulated connectors.Depending on your ignition voltage source, you can use the chamber as ground as well, but this depends on how the circuit is bu...

I'm making my list of fittings to build a 4"-port piston valve next week to replace the 2" sprinkler valve on my can-launching cannon. I'm going to try a modification of a coax-hybrid design to get faster piloting. Anybody wanna put money on LEO? Geocentric? Polar? If my valve idea works, I should b...

The other questions I have to ask, since the math makes my skull split: What volume of propane at what pressure would I need for 10x in a 10,179ci coax chamber at 120psi? Would 6" sch80 PVC(280psi rating) be strong enough for that mix? Would I be taking a chance on collapsing the barrel inside that ...

You can make threaded bolt hole circle in the chamber pipe ends if the wall thickness is sufficient. It's more compact and cleaner look then tie rod type. I know I could and the wall thickness would allow it, but it would require me to make the chamber volume smaller to keep the same theoretical bu...

Okay, so I've got the design for something truly strange sitting in my head here, and I wanted to run it past you guys to see if I'm completely nuts, or if this might work. I'm picking up fittings next week to build a real monster of a coax pneumatic, and I realized that it would be very easy to cha...

"Odd, but effective?"

Beefaroni...

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which can get pretty big, if you're nutty enough. My big cannon manged to fire a can of spaghettios over 400yards... That's just wrong. Spaghettios are for eatin'. Shoot something else! I'm italian...you would have to pay me to eat a can of that...i would happily launch one of those into outer spac...