Mr. Randall Wizard

So, unfortunately, while shooting the PCMII, I accidentally left an exhaust valve open, redirecting the combusting gas, and destroying my mixing fan. Oops. So I'm not going to be posting a video of the cannon for a while. Sorry about that!

The good news is that I just finished a neat drawing. Our AP Calc class is buying class sweatshirts, and I was asked to do the artwork for them. I took our teacher, Mr. Randall, and drew him like Yensid, the wizard who teaches Mickey Mouse in Fantasia. 

Potato Cannon Mark II

Alright, I finally got it working! The PCMII is now fully operational. Here are a few pictures, and a video will be coming soon...

The barrel is detachable, so the gun can be breech loaded, and is seven feet long.

This shows a little bit of the propane metering system, which allows a regulated and precise amount of fuel to be injected into the combustion chamber every shot.