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Chapters: Unicycle, Mountain Unicycling, Unicycle Trials, Self-Balancing Unicycle, Ride the Lobster, Street Unicycling, Unicon, Ultimate Wheel, Impossible Wheel, Embrio, Eunicycle. Source: Wikipedia. Pages: 47. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: A unicycle is a human-powered, single-track vehicle with one wheel. Unicycles resemble bicycles, but are less complex. One theory of the advent of the unicycle stems from the popularity of the penny-farthing (or "Ordinary") during the late 19th century. Since the pedal and cranks were connected directly to the front axle, the rear wheel would go up in the air and the rider would be moved slightly forward. Many penny-farthing owners discovered they could dispense with the frame and just ride the front wheel and handlebars. Evidence for this theory of development can reportedly be found in pictures from the late 19th century showing unicycles with large wheels. Over the years, unicycle enthusiasts have inspired manufacturers to create new designs, such as seatless ("ultimate wheel") and tall ("giraffe") unicycles. During the late 1980s some extreme sportsmen took an interest in the unicycle and started off-road unicycling (MUni). Unicycles have a few key parts: The wheel usually looks like a bicycle wheel with a special hub designed so the axle is a fixed part of the hub. This means the rotation of the cranks directly controls the rotation of the wheel (called direct drive). The frame sits on top of the axle bearings, while the cranks attach to the ends of the axle. The seatpost links the frame to the saddle. The many different types of unicycles can include: Each type has special components unique to that type of unicycle. Having props - or training aids - may make it easier to become comfortable with riding a unicycle. Two round wooden ...More: http://booksllc.net/?id=54412 ... Read more