Thanks for all of the help everyone!

My last (hopefully) question for this build, can I build a stand for this thing out of PVC? Or is the recoil too much for it to hold?

I plan on an overall length of about 8-10 feet.

Can the tank be inverted or does it have to be stored 'right side up'.

And I have another question, how does the computer fan not get toasted going through that many explosions?

Well a BBQ ignitor can't run my chamber fan, and the battery will stay in the car, I will have my car close whenever I am shooting the thing so why not.

SpudBlaster15, I was thinking the same thing, it is 16.4 oz cannister female out and 1/4" npt in, which would be really perfect.

And clemsonguy1125, I am a hardware purchasing agent for my company, and one of our hardware vendors had that available.

Alright, that sounds good. Would you recommend putting in a chamber fan then? Which leads me to my next question. I was thinking to power the electrical I would make some leads to hook to my car battery with alligator clips. Could I use a chamber short with the battery like that? Just placing a narr...

So, could I put a pressure gauge in my metering tube, and crack my 1st valve until I have the desired pressure on my gauge and then shut it and open it into the combustion chamber? And if that worked it wouldn't really matter what the pressure coming out of the can was as long as i metered it the sa...

Hey everyone. I am getting ready to make my first combustion cannon (have made a bunch of pneumatics), and I want to go the metered propane route. I have read around a lot, but I have a question. All of the sites I have read from have the blue cannisters with a torch you have to cut off, etc.- as we...