Bicycle - a Perfect Associate
Being one of the most basic human powered vehicles, the bicycle has two wheels attached to a vehicle that
is driven by a pedal. Bicycles were first introduced in the 19th century and it is asked that currently there are approximately about
one billion bicycles worldwide, outnumbering cars 2 to 1. In many regions of the world, bicycles are the main method of transport. Although
the primary use of the bicycle is as a means of carry, it has developed other uses including recreational actions, fitness activities
law enforcement applications and competitive sports.
History of Bicycles
Since the origin of the chain-driven model in around 1885, the fundamental pattern and the shape of a
typical bicycle has remained relatively unchanged. Nevertheless, the usage of modern material and design methods
such as computer-aided design has improved the many aspects of the bicycle. Some bicycles are particularly
factory-made to adhee to standards of racing, cyclicling on mountains and even for law enforcement. Additionally, the concept of the bicycle has up to a great extent extended its contribution for the development of cars by introducing concepts such as ball bearings, pneumatic tires and spoke tensioned wheels.
Features of a Bicycle
When referring to bicycles, the dynamics of the bicycle should be considered first. Bicycle needs its centre of gravity in order to be in its space. So it reaches this by moving forward
using the steering which offers some balance to the rider. In addition in order to successfully navigate a turn, the combined or full center of mass
of both the bicycle and the rider must lean into the turn. A technique mentioned to as counter-steering is used to attain this task by directly turning the handlebars with the reaches
or indirectly leaning or slanting the bicycle.
Through both biological and mechanical view points, the bicycle is an highly
cost-efficient machine. When
equating the energy an individual must spend to travel a given distance, the bicycle is stated to be the most efficiently
functioning self powered method of transportation. The bicycle wheels carry nearly 99% of the energy because the rider exerts energy to pedals. But in
bicycles that have gear mechanics, the energy needed will be decreased Nevertheless the air drag faced by the rider will
always remain a problem. At higher speeds, significantly greater power outputs are needed to overcome the air drag. When a rider is sitting in an upright position, the
body of the rider accounts for nearly 75% of the total drag experienced by the bicycle and rider combined. The only way to reduce the air drag is to importantly reduce the position to supine or prone that is in line with aerodynamics.
The main parts of the bicycle include the frame, steering mechanics, seating, drivetrain, suspension, wheels and brakes. Certain bicycles may include optional
mechanics such as gearing which uses peculiar sizes of gears to obtain a mechanical advantage from the bicycle. Using gears a rider can produce a higher power output with a relatively low
power input and thus, maximizing the efficiency of the bicycle.
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