Bicycle – a High Utility Vehicle
Evolution of cycling began in 1818 with push bikes or hobby horses is like a wooden frame and two wheels in line and the rider used to push with his feet while navigating the front wheel. In 1839 was refined, mechanical crank was added to the rear wheel.
A new design of the bike in its debut 1850 and 1860 when the Frenchmen Pierre Michaux and Pierre Lallement placed pedals on an enlarged front wheel. It was made of iron slab, wood and wire assembly Pine solid rubber tires on a tubular steel frame. But this design problem facing the seat too high and rugged of weight.
Subsequently, these problems have been solved to some extent by reducing the front wheel diameter, adding gears to attain enough speed, to fix the seat in the center, etc, but the main problem facing the front wheel, two pedals attached guide him. Then JK Starley, JH Lawson and Shergold connected the pedals with the rear wheel drive system to reduce the problem. These bikes have been given a name bicycle safety devices dwarf safety, as they had fewer seats with equal weight distribution.
the golden age of bicycles began in 1890, as new innovations and more comfortable these bikes. tire was an invention of Scotsman John Boyd Dunlop in 1888, then only freewheel was developed. Subsequently, the brakes Coastal were invented in 1898. This period also marks the introduction of shift cable and hand-pull brakes. It soon became famous throughout the world because alsmost useful to all areas. It was used in India to distribute milk in the house using the factors for mail delivery, used by the military for the movement of troops, and has become a source of recreation.
With the types of advent of technology and modern materials, other than bicycles are Introduced. A number of utilities bicycles, road bicycles, mountain bikes, BMX bikes and more. You can select the type of bike in terms requirement of its term of office, the number of riders, etc.
A rider mounts the bicycle to keep it upright so that the center of gravity remains on its wheels. It sees everything turn turn the handlebar with your hands. Use the brakes to stop as the parking brake force applied to the front wheels. It is the transport energy efficient because energy is needed to climb at very low speed slowly and transmits 99% of the energy of a rider on the wheel.
With the advent of technology and innovatio, design cycle has changed markedly. There are different models for men and women races, rides and freight and common use circus. Each model has its own characteristics to meet the unique needs of the rider like gears for runners and cyclists, runners padded stool Short, disc brakes for mountain biking, etc.
The use of the bicycle has not only improved man `s everyday life, but also helped to improve the environment because cycling polllution doesn `t cause. It also has positive effects on one of the `S Health. Manufacture of bicycles has led to the deveopment other industries such as the composition of ball bearings, nuts, washers, etc, as many companies make frames of bicycles and buy other parts for other companies.
About the Author
This article can be accessed in portuguese from the Article section of page www.polomercantil.com.br/bicicleta.php
Roberto Sedycias works as IT consultant for www.PoloMercantil.com.br
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