Unicycle

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A Torker unicycle
A unicycle is a one-wheeled human-powered vehicle. Unicycles are similar to, but less complex than, bicycles.
Contents
1 History
2 Construction
3 Training aids
4 Types of unicycles
4.1 Variations
5 Theory
6 Rider height vs. wheel diameter
7 Speed
8 Riding
8.1 Riding styles
8.2 Extreme unicycling
8.3 Unicycle team sports
9 Equipment and safety
10 Notable unicyclists
10.1 Known as unicyclists
10.2 Known in other fields
11 UNICON
12 Races
13 Unicycle manufacturing companies
14 See also
15 References
16 External links
//
History
One theory of the advent of the unicycle is based on 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.[1]
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 off-road unicycling (MUni) was born.
Construction
Unicycles are composed of a few key parts: the wheel (which includes the tire, tube, rim, spokes, hub and axle), the cranks, pedals, fork-style frame, seatpost, and saddle (the seat of the unicycle). The wheel is usually similar to 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.
There are many different types of unicycles, which can include (but are not limited to): freestyle unicycles, trial unicycles, MUnis, giraffes, and long distance unicycles, which all have special components unique to that type of unicycle.
Training aids
Having props, or training aids may make it easier to become comfortable with riding a unicycle. Two round wooden poles an inch or two in diameter and up to 4feet (1.2m) long can be used as training poles to stay stable. Another method for training is using a spotter to make riding easier. One other easy way to learn is to find a narrow hallway with which to use to help alleviate your left and right balancing while allowing you to focus on your forward and backward balance. [2]
Types of unicycles
Freestyle unicycle
Generally used for flatland skills and routines. Usually has a relatively high seatpost, a narrow saddle, a squared fork (used for one-footed tricks), and cotter-less cranks, as they do not need to withstand very much pressure. These unicycles are used similarly to flatland bicycles. Some examples of freestyle unicycles include Miyata, Nimbus, Schwinn, and Semcycle brands. Prices typically range from US$100 to $300. Wheel size is usually 20inches (510mm), but smaller riders may use 16-inch (410mm) unicycles. Some people prefer 24-inch (610mm) wheels.
Trials unicycle
Designed for unicycle trials, trials unicycles are stronger than standard unicycles in order to withstand the stresses caused by jumping, dropping, and supporting the weight of the unicycle and rider on components such as the pedals and cranks. A recent development in trials unicycles is splined cranks and hubs, a feature that is very useful and somewhat expensive. Many trials unicycles also have wide, 19- or 20-inch (510mm) knobby tires to absorb some of the impact on drops.
Offroad unicycle ("muni")
"MUni" or "muni" is an abbreviation for mountain unicycling. MUnis have many of the same components as trials unicycles, but have a few key differences. Usually, the tire diameters on mountain unicycles are either 24 or 26inches (660mm), allowing the rider to more easily roll over obstacles such as roots and rocks. The seat is also thicker and more comfortable on MUnis to compensate for the rough terrain. Brakes are sometimes used for steep descents.
Touring unicycle
Used for long distances, these unicycles are specially made to cover distances. They have a large wheel diameter, between 26 and 36 in., so more distance is covered in less pedal rotation. A 36" unicycle made by the Coker Tire company started the big wheel trend.[3] Some variations on the traditional touring unicycle include the Schlumpf "GUni" (geared unicycle), which uses a two-speed internal fixed-geared hub....(and so on)

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