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Peugeot 500 M : ウィキペディア英語版 | Peugeot 500 M
The Peugeot 500 M (1913-1914) was a French racing motorcycle made by Peugeot. It was a "technical tour de force" as the first motorcycle with dual overhead camshaft and a multi-valve cylinder head, with four valves per cylinder. ==Development and technology == The Swiss engineer Ernest Henry developed a four cylinder head valve for a race bike, similar to the Peugeot four-cylinder racing engine (1912) from the automotive industry, with four valves and roof-shaped combustion chamber. The dual camshaft drive was driven by a cascade of gears as was later used by MV Agusta. The twin engine with four exhaust ports was technically ahead of its time. However, it suffered from thermal problems that were due to the "limit of the performance of the metallurgy of the time": the cylinder heads ripped between the valve sockets. The secondary drive was achieved with primary drive chain to a single speed gearbox driving the rear wheel via belt. At the rear wheel the Peugeot had a pedal-operated drum brake. Front suspension was a girder fork.
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「Peugeot 500 M」の詳細全文を読む
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