Single Wheel Segway

http://acuteaero.com/2010/04/20/a-one-wheeler-the-uni-pogo/

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Stickwheel by socrates1024
www.youtube.com/user/Socrates1024

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the "Thing" by J. Dingley
www.youtube.com/user/XenonJohnD
www.sites.google.com/site/onewheeledselfbalancing/Home/one-wheeled-stand-up-scooter

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"Big Stick" by Matt Shumaker
www.endless-sphere.com/forums/viewtopic.php?f=35&t=63104