Potato canon
 

Say that you took a big piece of plastic sewer pipe, maybe 3 inches in diameter and 3 feet long, and you put a cap on one end of it. Then say that you sprayed a little WD-40 into the pipe, or put in a tiny drop of gasoline. Then say that you stuffed a potato down the pipe. Like this:

Works like a dream. My son-in-law built one a couple of years ago and gave it to my other son-in-law. We just have to be careful not getting caught firing it off in the city.

I don't have any way to take a picture of it and post it or I would show you.

Or make a sturdy one and use a bunch of pyrodex...

Doc,

That works, too!!

Hal,

What's the title of that photo? "North American Militia makes preparations to combat FBI intrusion?"

Dan
Thats the infamous psycovet cannon, and from the angle-of-the-dangle, that potato ended up somewhere in western Alabama. You had to be there to enjoy the true effects of the concussion.
bOOger

Just an opinion, but looks like 1/2 the powder is burning outside the barrel. Less powder, more packing, =more velocity. Thats just an opinion now, don't get upset.

Ron-

You could certainly be correct. Unburned-or not fully burned-fragments of SOMETHING can be seen in the pics. Powder? Wad(TP)? Fragmented potato? Some of each? Unknown at this time.

Keep in mind that this cannon had never been fired before the Mt. and loads remain entirely experimental.

And you guys actually stood that close to it when it was fired?! You had to be drunk or brave, or a bad combination of the two!

Dan
The first line to every story "I had been drinking"....Any one who had a digital camera when the cannon went off, quit working for some strange reason. But I must admit, it was an awesome display of firepower
bOOger