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A motorcycle trailer is either a trailer used to carry motorcycles or one to be pulled by a motorcycle in order to carry additional gear. ==For carrying motorcycles== Motorcycle carrying trailers may be open or enclosed. They may be wide, for two machines side-by-side, or narrow, for just a single machine. The main features that distinguish them from other flatbed or enclosed trailers are track(s) to keep the wheels from sliding side to side and sufficient tiedown points to keep the motorcycle(s) from tipping. They may also tilt, or include ramp(s) to facilitate the loading and unloading of motorcycles. Trailer manufacturers often offer trailers specifically designed for carrying motorcycles. Enclosed trailers, as seen in the photos, have the advantage of protecting motorcycles within from the weather and from prying eyes, and of being able to lock the motorcycles up securely. However, they are heavier than open trailers and create more wind resistance, decreasing the fuel efficiency of the towing vehicle. An enclosed motorcycle-specific trailer can be built low enough so as not to increase resistance due to wind, thus substantially maintaining efficiency. Collapsible or folding motorcycle trailers are available to overcome storage problems that might prevent use of a non-collapsible trailer, some such trailers are sufficiently compact to allow the user to carry the trailer in the trunk of a car when not in use. === Types === The basic motorcycle trailer design consists of a fixed platform mounted above an axle, which requires the motorcycle be loaded by physically lifting it or rolling it up a ramp onto the platform, potentially a difficult problem when dealing with a heavy touring machine or one that has been disabled. Since the latter half of the 20th century a number of different trailer styles have been devised to make loading motorcycles on them easier. Broadly, such designs include: *Tilt-bed, wherein the platform teeters on the axle, bringing the tail of the trailer to ground level. The motorcycle is pushed or ridden onto the trailer bed, which in some designs automatically tilts back to the horizontal and locks in place when the load moves forward of the bed pivot point. Such designs still require the machine be pushed up an inclined plane. *Drop-bed, wherein the platform is lowered to the ground in a substantially horizontally fashion and the motorcycle has only to be rolled or ridden over the lip of the platform and secured to it, whereupon the entire platform and load are raised and secured for towing. Such designs only require the machine be raised by the thickness of the platform, which is typically less than 10 cm (4 in). Numerous mechanical designs have been devised by trailer fabricators to achieve this goal. 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 trailer」の詳細全文を読む スポンサード リンク
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