Bicycles to Modern Bikes

Bicycle Anatomy

The bicycle is a two wheeled, light- weight machine,which is propelled by human power. It is efficient, cheap, easily manufactured, and one of the world's most popular forms of transport. The first pedal driven bicycle was built in Scotland in 1839. Since then the basic design of a frame, wheels,brakes,handlebars, and saddle has been gradually improved, with the addition of a chain, gear system, and pneumatic tyres (tyres inflated with air). The recent invention of the mountain bike ( all terrain bike) has been an important development. With its strong, rugged frame,wide tyres, and 21 years, a mountain bike enables riders to reach rough and hilly areas that were previously inaccessible to cyclists.

Bicycles

Although all bicycles are made up of the same basic components, they can vary greatly in designs. A racing bike, such as the Eddy Merckx model , with its light frame and steep head and seat angles, is built for speed. Its design forces the rider to adopt the "aerotuck" a crouched, aerodynamic position. While a touring bike resembles the racing bike in many respects, it is designed for comfort and stability on long distance journeys. Touring bikes are characterised by more relaxed frame angles, heavy chain stays that support the rear panniers, and a long wheel base ( the distance between the wheel axles) for reliable handling. All round bicycles known as "Hybrids", combine the light weight and speed of sports bike with the rugged durability of mountain bikes. Bicycles that are not designed for conventional road use include time trial bikes, which have a short head tube, sloping top tube, "aero" handlebars, and aerodynamic tubing. Most Human Powered Vehicles (HPV) are recumbents- the rider has a recumbent position- which maximise power output and minimise drag (resistance). Essential to the safety of all riders are helmets, and both front and rear lights ; locks protect against theft.


The Motorcycle

The Motorcycle has evolved from a motor cycle- a basic bicycle with an engine into a sophisticated, high performance machine. In 1901, the Werner brothers established the most viable location for the engine by positioning it low in the centre of the chassis the new Werner became the basis for the modern motorcycle. Motorcycles are used for many purposes for commuting, delivering messages, touring and racing and different machines have been developed according to the demands of different types of riders. The Vespa scooter , for instance , which is small wheeled,economical and easy to ride, was designed to meet the needs of the commuter. Slide cars provided transport for the family until the arrival of cheap cars caused their popularity to decline. Enthusiast riders generally favour larger capacity machines that are capable of greater performance and offer more comfort. Four cylinder machines have been common since the Honda CB750 appeared in 1969. Despite advances in motorcycle technology, many riders are attracted to the traditional looks of motorcycles like the twin cylinder Harley- Davidson. The Harley- Davidson Gliders exploit the style of the classic american V-twin engine, where the cylinders are placed in a V-formation. 
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About Ashith kp

An Energetic Blogger,Software Developer, Photographer From Thalassery,Kerala,India. Founder of Popskope Entertainment and WeBTv.India

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