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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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| We made these potato cannons early last year with the goal of being more compact than any of our previous models. They worked great for firing water balloons.
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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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| This cannon in its configuration allows for inter-changeable barrels and chambers with a manually actuated sprinkler valve.
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| New way to create a Sleak Spud Cannon
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| I built a 6 foot tall stand-up personal hot tub for my dorm room.
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| We built a 15 foot tall (30 foot extended) trebuchet and fired water balloons and other similar projectiles.
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| We built 30 foot tall trebuchet like device for people. It was counterbalanced with over 1000 pounds of concrete and had over 180 degrees of rotation.
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| custom street luge w/ brake
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