NSU Delphin III

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NSU Delphin III
File:NSU Delphin III - Deutsches Museum Verkehrszentrum.JPG
Delphin III in the Deutsches Museum in Munich
Manufacturer NSU Motorenwerke
Also called Dolphin III
Predecessor Delphin I/II
Class Streamliner
Engine 499 cc, 4-cycle supercharged parallel twin[1]
Top speed 211.4 mph (340.2 km/h)
Power 110 hp @ 8,500 RPM[1][2]
Dimensions L: 3.7 m (12 ft)[3]
H: 1.1 m (43 in)[3]

The NSU Delphin III streamliner motorcycle set the motorcycle land speed record in 1956. Wilhelm Herz rode the machine to 211.4 miles per hour (340.2 km/h) at Bonneville Speedway in Utah, to break 200 mph (320 km/h) for the first time.[4] Its fairing, designed in a wind tunnel at University of Stuttgart (then Stuttgart Technical College), gave it a drag coefficient of 0.19.[1] The same engine powered Herz to a 1951 world speed record, with a less efficient frame/fairing, the Delphin I.[2] The engine used an unusual rotary supercharger related to NSU's eventual development of the Wankel engine.[5][6] In the supercharger, both a trochoidal inner rotor and epitrochoidal outer rotor spun around a stationary shaft.[6]

References

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External links