My First Tennis Ball Cannon

[rustlerdude987]

This is my first ever tennis ball cannon. Right now it is in the process of being converted from a spray and pray into a syringe injection. the reason i chose syringe injection is because right now with spray and pray it will only shoot 200 yard about 6/10 of the times.

Parts
2.5" x 48" (Barrel)
3" x 24" (Chamber)
2 Grips

In-Progress
Internal Combustion Fan
Stun-Gun Ignitor
A way to introduce 103.2cc Of Butane In

Any Constructive Criticism And Ideas For Upgrading And Making This Cannon Better Is Encouraged

[mattyzip77]

200 yards isnt all that bad for a tennis ball. I dont think you will be able to get that much more further using the same projectile. good luck.

[jsefcik]

chamber fan will help with mixing fuel and venting=)

[Spud Destruction]

If you put a vid up of distance i would love to see that. We don't have the room to try and go for distances.

But i will tell you at 150psi the ball exited the barrel at only 276 fps i believe, don't know why so slow, we get potatos at that psi exiting at 500+ psi.