Watermelon air boat


We think you’ll turn a few heads in Central Park if you’re driving a water melon around when everyone else is piloting sailboats. This watermelon is both sea worthy and radio controlled thanks to the work which [Starting Electronics] put into it.

We used this image because it shows you what’s inside of the hull, but you don’t want to miss the thing motoring around an above-ground swimming pool in the clip after the break. The hollowed out shell is quite buoyant and has no problem staying afloat and upright with the addition of a propeller. The parts from a remote control airplane kit have been mounted on a wooden scaffold. This provides plenty of thrust with a servo motor moving turning the prop for directional control. There is no dagger board so the craft is a bit slow to respond to turns. But how responsive do you expect a floating melon to be?

35 thoughts on “Watermelon air boat

    1. And more ballast at the lowest point.
      That could be solved by switching the expensive li-poly battery pack out with a cheaper ni-mh pack with same capacity.
      Since there’s still plenty of space in the bottom of it, judging from the pictures.

      1. No, no. The beauty of LiPo is that the voltage stays relatively consistent for the duration of the pack, as opposed to the nickel-metal voltage drop.

    1. no squirt gun, just a water pump that sucks water from the under side and simply put a nozzle on it aiming front. now you can go and sink other people’s boats by flooding them.

      1. That is what I meant by squirt gun… But yes, there must be melon battles!

        I do like the idea of making this pump powered, rather than air. Then you could simply tap the pump for the squirt gun.

        And who will do a submarine version?

  1. He should have had the propulsion under water and kept the watermelon intact then take it out to a lake with a populated beach :P

  2. I thought the picture showed it upside down, so that the propulsion was hidden bellow the watermelon. I wondered why the propeller was so large…

    Really, it would have been quite something to see nothing but a watermelon moving around the pool.

    Still, this should turn heads just as much.

  3. I curious about the propeller motor, controller, and battery pack — anyone here familiar with electric RC plane stuff? It seems like the motor is using a lot of power … what are the chances that this LiPo battery is usable for more than a few charge cycles?

  4. I expected to see a zepelin like thing made from a watermellon….oh well.
    Nice idea,also when you think that you can actually shape a watermelon by confining it in a small space (box watermelons anyone?) it gets intriguing.
    I am wondering how long it will take to rot/decompose?

  5. I want to see a vegetable race. Watermelons, eggplants and pumpkins, battling it out! The cucumbers would be like dragsters (needs port/starboard stability “pontoon” rig most likely)

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