10/1: Monocycle

[russotto]

The basic physics of this thing is pretty wierd. It seems to me that the only way this thing could possibly move is if it's basically a big roller bearing and the engine pushes the outer race relative to the inner (where you sit). The only thing keeping the rider from rotating is the inertia of himself, the engine, and the other mechanical bits -- it's like a big gerbil wheel that's not attached to anything!