Nothing fancy, but alot of fun. This was my first gun, I made it for me and my kid.

4"X12" chamber
2"X4' Barrel
Barbeque ignitor

and this one

Hey does anyone know right off what the pressure is on these bernzomatic tanks?

Yes!! Thank you D_Hall, that is exactly the sort of information I was after. I had already planned to speak with some of the professors in my dept as well.
The combustion, gas expansion, wave front stuff also is good. It’s going to be the most difficult to model. Compressible fluid mechanics ...

Thankz DYI, I didnt even think of circuits. Conveniently I'm taking that course this semester. In the fall I will be taking instrumentation which hopefully will provide me with the tools to gather some useful emperical data on velocities, maximum pressures, rates of pressure change and so forth ...

Hello Spudfiles,
I’m new to this site, this is my first post in fact and I've yet to build a spud cannon. I have recently become interested in the hobby however and as a result have been doing a fair amount of reading on the subject. My goal is to eventually build a hybrid cannon optimized to ...