Being one of the most basic human power-driven vehicles, the bicycle has two wheels tied to a vehicle that
is driven by a pedal. Bicycles were first introduced in the 19th century and it is asked that presently there are approximately about
one billion bicycles worldwide, outnumbering motorcars 2 to 1. Bicycles being the main method of carry in many corners of the earth, the bicycle is also majorly used for other recreational activities and for the purpose of fitness and even in the case of law enforcement activities such as petrolling an area.
Bicycles and Its Story
Ever since the chain driven model was presented to the market, the fundamental
innovation of the bicycle had remained unchanged up to day. Nevertheless, the usage of modern material and design methods
such as computer-aided innovation has improved the many aspects of the bicycle. Some bicycles are particularly
invented to adhee to standards of racing, cyclicling on mountains and even for law enforcement. In addition, many of the parts that played a
major role in the development of motorcars for instance, ball bearings, pneumatic tires and spoke tensioned wheels were initially intended for
the bicycle.
Features of a Bicycle
Dynamics
of the bicycle is something that should be mentioned to first. Bicycle needs its centre of gravity in order to be in its space. So it achieves this by moving forward
using the steering which allows some balance to the rider. In addition in order to successfully navigate a turn, the combined or total 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 hands
or indirectly leaning or slanting the bicycle.
Bicycle can be classified as an extremely
cost-efficient machine looked at in both biological and mechanical view point. When
comparing the energy an individual must spend to travel a given distance, the bicycle is stated to be the most efficiently
working self powered method of transportation. Nearly, 99% of the energy is carried to the wheels of the bicycle when a
rider exerts energy into the pedals. Nevertheless when gears mechanics are used this figure may drop by 10-15%.A rider using a bicycle
feels air drag or the resistive force that is exerted by air. When the speed is high, a lot of energy will be needed
to overcome this airdrag resulting in an exhaustive ride for the rider. However, the exerted drag can be importantly
decreased by placing the rider in a supine or a prone position and by covering the bicycle with fairing that is aerodynamic.
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 unique 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, crescendo the efficiency of the bicycle.
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