Propane is definitely THAT MUCH better and beyond... It can increase muzzle velocity over 200 miles per hour (about 300 fps) in some cases....

If your not ready for propane (you seen like your interested though), try adding a chamber fan first...

How are you spraying denatured alcohol and ...

Which way do i want to to vent my cannon? Should i have the fan vent towards the barrel or the back of the chamber?

I can't get good solid shots everytime. It seems like 1/4 of the time i get a good shot. Im using dentured alchol and it seems if i do one spray and wait about 10 seconds ive gotten the biggest bang. I've also tried starting fluid and gasoline with about the same results. Is using propane that much ...

Something that not many people realize...

Paper, cloth, and really anything that burns easily is horrible to use in a cannon because it will throw your fuel/air ratios off.
If the paper ignites in the barrel even partially, it consumes oxygen that the fuel would normally use, thus resulting in ...

Well i don't have anything to shoot so i figured i would try a wad of paper just to see if all the components were working. Anybody know of a good starter ratio? Will i get more preofrmance running it more rich or lean?

I just built my first cannon (a small one) It has a 3" dia chamber by 12" long and it reduces down to 1.5" I'm using dentured alchol in a spray bottle as my fuel and a grill sparker and my ignition source. My question is why doesnt my have nearly as much power as vids i have seen? I tried shooting a ...