What jack said. And, try it first with just a syringe. Much easier and more accurate than the setup you have now. The setup you have now has a some serious problems. The main one is the big hunk of clear tubing. That tube contains air, or an undefined mixture of air and propane. The stoichiometric ...

Hey guys, I have been spudding with AquaNet for about a year now. The glue-like residue was starting to get old, so I decided to convert to propane because I heard that it burns cleaner and better. I have built a cheap but functional propane meter, now all I need is someone to help me figure out how...

I don't have any trees in my backyard to shoot at, so I just shoot at my shed

A basketball launcher, Jesus Christ.

Anyway, of course it will work. The exhaust gasses have to go somewhere, so it will take the path of least resistance and shove the potato the hell out of the barrel.

Same here, I live in an urban area in Wisconsin, my cannon sounds like dynamite, and the cops have never touched me.


Knock On Wood...

Yeah, the fan is just there to increase efficiency of the fuel, so that it fills every cubic centimeter of your combustion chamber for maximum power. It will definitely work without it though, I don't have one, and I get a pretty powerful punch when I hit the igniter.

I'll read everything. It looks like a very useful site.

Ok. Also another question, I have seen people just mount their tanks on their cannons. They also have a gauge. How do they measure propane in a situation like that? If easy, I would like to use that instead of a syringe.

Thanks, I have just ordered one.

So I would fill this up completely with propane, then inject it, then close it right away, and then it is ready to fire?

Let me fix the images, not sure why they aren't showing...

They are fixed now.

http://i.imgur.com/lPp1fMk.jpg Here she is completely assembled. http://i.imgur.com/1TASmO6.jpg Here is my ignition system. A grill igniter that sparks extremely fast. http://i.imgur.com/9FqZwhy.jpg This is the inside of the chamber, with the 2 ignition screws together. http://i.imgur.com/TMlc7P6.j...

I will get on that now.

Thanks for taking the time to put all of this together. I can indeed see why a bigger flash would mean more unburnt fuel. Anyway, I have never used propane before, and I also don't know the volume of the chamber when the cannon is loaded. How would I go about adapting my cannon for propane use? In o...

This is such a beautiful looking gun, I love everything about it.

Hey guys, I have been spudding for a while now. I currently use AquaNet hairspray for fuel. It produces excellent power, but no visible muzzle flash unless it's at night. I am looking for a fuel that produces a nice, visible muzzle flash, and provides the same amount, if not better, power as the Aqu...