Air Cannon with two tennis balls

A short video with sound of the new air cannon in action. The object that falls off to the left is a Gatorade bottle used as packing as it fits perfectly inside the PVC barrel. The two tennis balls are loaded after the bottle and some water is added to increase pressure seal and provide some smokey aesthetics. Note the tennis balls simply dissapear into the sky; excellent performance, difficult to find the tennis balls when they land.