Technical aspects of Bicycle

bicycle has undergone continual adaptation and improvement since its origin. These improvements have continued with the advent of modern equipment and computer-aided design, allowing for a creation of specialized bicycle types.

 

 

 

 

 

 

 

 

 

The
Types:
Bicycles can be categorized in different ways: e.g. by function, by number of riders, by general construction, by gearing or by means of propulsion. The more common types include utility bicycles, mountain bicycles, racing bicycles, touring bicycles, hybrid bicycles, cruiser bicycles, and BMX Bikes. Less common are tandems, lowriders, tall bikes, fixed gear, folding models amphibious bicycles and recumbents (one of which was used to set the IHPVA Hour record).
Sometimes unicycles, tricycles and quadracycles are not strictly bicycles but sometimes called as "bikes".

Dynamics:
A bicycle stays erect while moving forward by being steered so as to keep its center of gravity over the wheels. This steering is usually provided by the rider, but under certain conditions may be provided by the bicycle itself.

Performance:
The bicycle is very efficient in terms of biological and mechanical. The bicycle is the most efficient self-powered means of transportation in terms of energy a person must expend to travel a given distance. From a mechanical viewpoint, up to 99% of the energy delivered by the rider into the pedals is transmitted to the wheels, although the use of gearing mechanisms may reduce this by 10-15%. A bicycle is also an efficient means of cargo transportation.