I just discovered these things and soon after this post. I can't more people don't talk about this here. Some of these devices are authentic, barrel-sealing piston valve launchers. All you have to do is screw on a barrel. They are steel, high volume, well made, aesthetically pleasing, and cost ...

I'm trying to simplify this thing as much as possible; less parts, less machining, less weight, less cost, while having the chamber volume I want. I won't be selling it or anything, but I imagine if a spudgun like this was sold on the market, what would it be like? It would be clean and simple to ...

Thanks mrfoo. That would be great. I think you should just buy the house next to me and move in just so I can make a cannon. And then, maybe Chernobyl can buy the house on the other side and we can just pump out cannons all day. Seriously, all I want to do is work on my cannon right now. I want time ...

I don't have a lathe, so I'll have to pay a shop, and it will cost a fortune. Basically like buying a car probably. But, this design is far simpler and easier to machine than my last ones. Mostly turning and that's it. My last 2 were very expensive and they did me a favor by letting me exchange my ...

Looks like an average cannon until you see the inside. I used the chamber volume efficiently for valve design to maximize flow with no restriction; 1 5/8" port with radial chamber vents that exceed the port surface area. Like my last design, there is no pilot venting per shot. The barrel will easily ...

I feel like it's getting spammed by bots. A lot of people with 1 post responding to each other, basically watering down the entire forum and just flooding it with garbage. Thoughts?

Yes, perfect! I love stuff like this. What a great update. Thanks for sharing!

Sorry to hear that, man. Hopefully they reverse it?

That's a beauty.

I made a youtube video and put it in the post. Most people don't like clicking external links to random stuff, so you can watch it in here.

The link to the song is below, but I also attached the MP3 to this post. Lyrics are copied below. This song rocks!!

https://youtu.be/OXhy3o2DPuQ

Song Title: Blast of Glory!

Loadin' up the chamber tight, oh yeah
Sparks ignitin', watch it light the night
Feel the power, see it glow, ready to go ...

Is a piston valve an option? That's what I'd go with, but you have to make it yourself.

You can help ease my boredom by posting a sketch of your latest hybrid design.

If you go with oxygen then you don't need to go hybrid. Going with a hybrid design using pure oxygen and propane with a large cannon like yours may well be a dangerous move. If the oxygen/propane fuel mixture is pressurized, it will be far greater than 5x pressures with a very rapid and violent ...

Yes I've noticed it taking a really long time. Hmm..