Computers & Mobile Craft & Design Robotics Workshop
Say Hi to the HOG Wheel Drive

That’s Hemispherical Omnidirectional Gimbaled wheel. As an idea it’s at least as old as 1938, but it’s lately been re-discovered by Curtis Boirum, an MS Mechanical Engineering student at Bradley University in Peoria, IL. The wheel is essentially a rubber hemispherical top spinning at very high speed and mounted on a gimbal. When the spinning axis is straight up, the wheel exerts negligible torque; but tilting it even slightly allows rapid torque development in any plane direction. The remarkably nimble vehicle in the video is essentially a trike with two free-spinning conventional wheels and one HOG wheel. Look at it go! Can’t wait to see what hobby roboticists, inventors, and entrepreneurs do with this. [via Hack a Day]


I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and My work has also appeared in ReadyMade, c't – Magazin für Computertechnik, and The Wall Street Journal.

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