Beginning with a 133 cc single in 1902, rapid improvements culminated in the secret project of engineer Paul Kelecom to design a four-cylinder engine to eliminate the vibration inherent in larger singles. – The very first four-cylinder motorcycle designįamed Belgian arms maker Fabrique Nationale d’Armes de Guerre, or FN for short, embraced bicycle and motorcycle production during the early 20th Century. – Formerly part of the famed Otis Chandler Collection It was a commercial success upon release, with production increasing over its twenty-year run. The motorcycle was developed in 1904, tested late that year, and had its public debut at the 1905 Paris Motorcycle Show. The FN Four, manufactured in Liége, Belgium by Fabrique Nationale from 1905 until 1923, was the world’s first production inline-4 motorcycle. It was also, at 40 miles per hour (64 km/h), the world’s fastest production motorcycle from 1911 until 1912. 5 hp, 363 cc air-cooled inline four-cylinder engine, shaft drive, and rear drum brake.
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