My First Tennis Ball Cannon

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
rustlerdude987
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Mon Jun 25, 2012 1:46 pm

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
Attachments
Main1.jpg
Back1.jpg
Grips.jpg
sparksmall1.jpg
sparksmall2.jpg
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mattyzip77
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Mon Jun 25, 2012 5:25 pm

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.
Go Bruins!!!!
jsefcik
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Mon Jun 25, 2012 8:24 pm

chamber fan will help with mixing fuel and venting=)
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Spud Destruction
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Mon Jun 25, 2012 11:14 pm

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.
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