Yeah I use an electric BBQ ignitor. The ones you put a battery in. Also there is a chamber fan and I do get a lot of power from this cannon. I agree though a smaller but longer barrel would be better.

my personal opinion if i may add it is that your spark is not hot enough to ignite the propane to its full potential. i had this problem until i switched to an automotive coil for a spark Dude you have to be a moron. I use a stungun ignition. I solved my problem. It was because my chamber was too l...

I used a taped up ball until it fit snugly in my barrel when doing the tests. But it seemed to me that the propane was less powerful than the hairspray.

I have been doing some field tests and the results are really wierd. Maybe it's just me. I have a .88:1 C:B ratio combustion launcher. The chamber is 4" SCH 40 @ 18.5" long and the barrel is 3" SCH 40 @ 36.5" long. After doing some math I figured my chamber volume to be 232.25 cubic inches. This can...

This is one of my first combustion cannons. It features a 4" SCH 40 chamber @ 18.5" long with a 3" SCH 40 barrel @ 36.5" long. It also has direct propane injection. Let me know what everyone thinks.

I just finished building a propane meter. The meter pipe is 8.5" long and 3/8" diameter. My chamber size is 4" SCH 40 and its length is 18.5" The barrel is 3" SCH 40 and its length is 36.5" I would like some help on how much PSI of propane to inject into my chamber. I have tried several times with f...

I just finished building your propane injection system and my cannon fires but it is really weak. My chamber is 4" SCH 40 and 18" in length. I tried counting to 30 seconds but the combustion is so weak it barely shoots out anything. I mean it does ignite but the combustion is real weak.