Wow! Great job, the aesthetics are perfect. Nice job on the paint too. My dad also looks forward to seeing my creations fire for the first time. Excellent!

Yeah. My goal was not really to have a good looking cannon here. This cannon I built a ways back, I just used it to test the air pump concept.

rcman: I think that you misunderstood my crappy paragraph.. All that would need to be done is a cannister of propane at the end of the grip, when the grip is pumped forward, it hits the top of the propane cannister and squirts a small dose of propane into the chamber. Simple as.. That is how the Ti...

So this is the pump action combustion I have been working on. It is not really a pump action because it does not use a pump to reload a projectile. It uses an air pump for a soccer ball to pump in fresh air and move CO2 out of the chamber. This is a lot more efficient because no caps or valves need ...

I am not too enthusiastic about a pressurized system. It seems too complex and too much to deal with. So we should look into the carbureted system for now and also think of other ways. I am going to get markfh11q in this too since he lives nearby my house. I have my air pump ventilation system insta...

The nerf rockets were for shooting only the ships. All they have to do is touch the ship.

It is an in-line design, notice the large ball valve ahead of the chamber and behind the barrel. It just looks like an over-under design because of the carry tank. I wanted it to have straight look to it but the tank had to go somewhere and I did not have time to do anything fancy.

I like that idea, it sure would speed up the process. I would like to have at least a semi-auto design built and operating before I go to college in August. Of course college may help me even more since I will be pursuing a major in engineering.

Too much money for me. I prefer something more compact. This does give me the idea for an artillery cannon with pre-loaded propane shells(chambers). Just shoot one chamber, disconnect it from the barrel, then connect another chamber. Not very efficient but my family and neighbors would marvel at it....

I like the concept and I think it may be possible to use with other fuels, with a few modifications. I experimented with gasoline as a fuel once and I haven't found it very effective. It is not very powerful and is not clean burning. It doesn't seem like this design would work well without some kind...

I like that guy's firestorm design, but it has many flaws and I don't think it would work as shown. I did notice that he used the air piston concept to vent so now i realize how many other people have thought it up. I also like the 3 way solenoid(or how ever you spell it) that the guy on advanced sp...

I basically already have a pump-action, but I want to make a semi-automatic. A shell system would be cool but hard to do. I would just use solid fuel or compressed air.

Right now I have a pump-action but my ultimate goal is an automatic

First of all, I haven't been on the forum in a long time. so about a year ago I started my own little thing called the Omega Project. This was just a challenge to build a semi-automatic if not automatic combustion spudgun. Of course all of my ideas dead-ended with finding a way to vent CO2. Then I g...

I like this design. It looks very intimidating with that scope on top of it. I also like the breach loading design. Very unique, awesome job!