Air Powered Potato Cannon

Step 4 Firing!

The actual act of firing the cannon requires further knowledge. Use extreme caution in aiming device. Make sure all parts are securely attached. Check launch platform after every launch for signs of wear. DO NOT over pressurize the pressure chamber. 30 PSI should be used as a high average. Use ear protection and eyewear. Clear the area in front of cannon for 200 yards. Clear area around cannon for 25 yards.

Projectiles:
I used a weighted ping-pong (filled with clay) for my experiment with tissues as wadding. I needed this to have a consistently sized and weighted projectile. I encourage the use of potatoes however as when you jam one down the barrel, they lock it up and nice airtight. That means you get way more range. Moreover, who doesn't like shooting potatoes?
DO NOT shoot pointed, explosive, fragile, or living projectiles. I am not responsible for any of the damage you may incur in such a case.

Remember:
An angle of 45 degrees should give you the greatest distance. This cannon shoots very accurately and I can consistently land my projectiles within five feet of each other.
See how close you can land to a target and assign points to see who is the best bombardier.
This cannon is tons of fun but can also be very dangerous, remember to use your head and think about what you're doing. I'm not responsible if you put a potato through someone's head...

Have fun!

Comments

[TygrFr3d]

30 PSI as a high average? If you are worried about it bursting, don't worry. I have taken a 3" chamber to 120 with no issues. And if you want good groupings, maybe have the ball valve open with a tension spring and a catch, so it will open fast, and at a consistent speed.

[tulavatalo]

Help i pumped upp the barrel with a projectail to over 80psi and it din't move att all 

[beehard44]

did you close the valve? was there air flowing out? if the valve is open, close it while pumping. IF the air wasn't flowing out, either ur barrel is glued shut by the glue or your projectile is so tight it chokes the barrel

[extra-flyer]

 First i made it with a pvc valve for way more flow because it was 1 1/2 inch and You probably sealed the valve by letting the glue drip down. Check that and I think you will be okay.

[cdwrestler18]

i made on of my own and it works great its for a school project for tenis balls i moved the pipe sise up to 2 and a half

[codongolev]

ha.... don't shoot anything sharp, fragile, or living"