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A motorcycle fairing is a shell placed over the frame of some motorcycles, especially racing motorcycles and sport bikes, with the primary purpose to reduce air drag. The secondary functions are the protection of the rider from airborne hazards and wind-induced hypothermia and of the engine components in the case of an accident. A motorcycle windshield may be an integral part of the fairing.〔Tony Foale, ''Motorcycle Handling and Chassis Design'', ISBN 84-933286-3-4 , Chapter 5: "Aerodynamics"〕 The major benefit of a fairing on sport touring and touring motorcycles is a reduction in fuel consumption.〔(Fuel Economy Begins with Streamlining )〕 The reduction in aerodynamic drag allows for taller gearing, which in turn increases engine life. There may be a front fairing, or a rear fairing, or both. Alternatively, a single fairing may partially or fully enclose the entire motorcycle, and may also enclose the rider. ==History== The importance of streamlining was known very early in the 20th century. Some streamlining was seen on racing motorcycles as early as the 1920s. The effects of aerodynamic drag on motorcycles are very significant. The term fairing came into use in aircraft aerodynamics with regard to smoothing airflow over a juncture of components where airflow was disrupted. Early streamlining was often unsuccessful resulting in instability. Handlebar fairings, such as those on Harley-Davidson Tourers, sometimes upset the balance of a motorcycle, inducing wobble. The introduction on the BMW R100RS in 1976 marked the beginning of widespread adoption of fairings on sports and touring types of motorcycles. Originally the fairings were cowlings put around the front of the bike, increasing its frontal area. Gradually they had become an integral part of the design. Modern fairings increase the frontal area at most by 5% compared to a naked machine. Fairing may carry headlights, instruments, and other items. If the fairing is mounted on the frame, mounting equipment on the fairing reduces the weight and rotational inertia of the steering assembly, improving the handling.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「motorcycle fairing」の詳細全文を読む スポンサード リンク
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