Motorcycle

Motorcycle construction is the engineering, manufacturing, and assembly of components and systems for a motorcycle which results in performance, cost and aesthetics desired by the designer. With some exceptions, construction of modern mass-produced motorcycles has standardised on a steel or aluminium frame holding the front wheel and disk brake. A gasoline powered typically consisting of between one and four cylinders (and less commonly, up to eight cylinders) coupled to a manual five- or six-speed sequentiell transmission drives the swingarm mounted rear wheel by a chain, driveshaft and belt. Motorcycle fuel economy benefits from the relatively small mass of the vehicle. This, of course, relates to how the motorcycle is used. One person on a small motorcycle travelling a short distance is generally very economical. However a large motorcycle generally has bad aerodynamics compared with a typical car, poor aerodynamics of exposed passengers and engines designed for goals other than fuel economy can work to reduce these benefits. Riding style has a large effect on fuel economy. Fuel economy varies greatly with engine displacement and riding style. Different types of motorcycles have different dynamics and these play a role in how a motorcycle performs in given conditions. For example, a shorter wheelbase would generally make a bike lean faster and would be quicker around corners compared to a longer wheelbase.Longer wheelbase on the other hand provides more stability in a straight line. Motorcycles must be leaned in order to make turns. This lean is induced by the method known as counterstreering, in which the rider presses on the handlebars on the side of the desired direction of turn, but 'steering' the bars in the opposite direction. Because it is counter-intuitive this practice is often very confusing to novices—and even to many experienced motorcyclists