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A timing belt, toothed belt,〔 cogged belt or cog belt,〔in ''Contact !'', Experimental Aircraft and Powerplant Newsforum for Designers and Builders, n°55, Dieselis Aircraft, A Prototype Aircraft with a Diesel Engine〕 or synchronous belt is a non-slipping mechanical drive belt. It is made as a flexible belt with teeth moulded onto its inner surface. It runs over matching toothed pulleys or sprockets. When correctly tensioned, they have no slippage and are often used to transfer motion for indexing or timing purposes (hence their name). They are often used in lieu of chains or gears, so there is less noise and a lubrication bath is not necessary. == Applications == Timing belts are used widely in mechanical devices, including sewing machines, photocopiers and many others. A major use of toothed belts is as the timing belt used to drive the camshafts within an automobile engine. As toothed belts can also deliver more power than a friction-drive belt, they are also used for high-power transmissions. These include the primary drive of some motorcycles, notable later Harley-Davidsons. Also the supercharger used for dragsters. Microlight aircraft driven by high-speed two-stroke engines such as the Rotax 532 use toothed belt reduction drives to allow the use of a quieter and more efficient slower-speed propeller. Some amateur built airplanes powered by automotive engines use cog belt reduction drive units.〔For example : Bede BD-5, Dieselis aircraft (), and Pennec Gaz'Aile 2〕 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「toothed belt」の詳細全文を読む スポンサード リンク
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