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| I attached a model airplane engine to a skateboard and zoomed around.
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| This is a mid-size trebuchet that uses a 600 lbs counterweight.
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| I made a couple of air cannons out of steel pipe. Managed to shoot a potato over 250MPH and over 600 feet!
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| A potato gun powered by compressed air
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| Gokarting is fun, especially when you build the vehicle yourself and get to drive it like a madman! 180s, powerslides, and much more await if you have the motivation to construct one.
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| This Is my pneumatic Golf ball cannon. I've pressurized it up to 125 psi and done some serious damage to a certain frying pan with golf balls, and I also have a paintball/AA battery barrel that acts more like a gun then a cannon
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| My homemade version of a "stomp pad" automatic mat switch made with foil, cardboard, and lots of duct-tape.
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| Simple-to-make aluminum blast furnace provides fun for the whole family!
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| custom street luge w/ brake
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| 700hp dodge efi conversion. For more power, better fuel econamy, easier starting, lower emissions, easier tuning, And complete control!
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| New way to create a Sleak Spud Cannon
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| This water balloon launcher can launch any size balloon close to 400 feet. And, it is completely silent for unexpected bombardments!
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