Engineering:NSU Delphin III
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 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 | 210.64 mph (338.99 km/h)[2] |
| Power | 110 hp @ 8,500 RPM[1][3] |
| Dimensions | L: 3.7 m (12 ft)[4] H: 1.1 m (43 in)[4] |
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.[5] 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.[3] The engine used an unusual rotary supercharger related to NSU's eventual development of the Wankel engine.[6][7] In the supercharger, both a trochoidal inner rotor and epitrochoidal outer rotor spun around a stationary shaft.[7]
References
- ↑ 1.0 1.1 1.2 Cite error: Invalid
<ref>tag; no text was provided for refs namedwalker - ↑ "Over 210 m.p.h.". The Motor Cycle (London: Ilffe & Sons) 97 (2782): 169. 9 August 1956.
- ↑ 3.0 3.1 Schneider, Peter (1997) (in German), Die NSU-Story, Stuttgart: Motorbuch Verlag, pp. 389–409, ISBN 3613018535
- ↑ 4.0 4.1 Collections: NSU Delphin III, Technikmuseum Speyer, http://speyer.technik-museum.de/en/en/nsu-delphin-iii, retrieved 2013-09-16
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedsetright - ↑ Louise Ann Noeth (May 2002). Bonneville: The Fastest Place on Earth. MotorBooks International. p. 73. ISBN 978-0-7603-1372-5. https://books.google.com/books?id=Jyezo0glOaYC&pg=PA73.
- ↑ 7.0 7.1 John B. Hege (2006), The Wankel Rotary Engine: A History, McFarland, p. 27, ISBN 0786486589, https://books.google.com/books?id=IB2lMFqTTl8C&pg=PA27
External links
- Wilhelm Herz auf NSU Delphin III on YouTube from Technikmuseum Speyer (in German)
- d'Orléans, Paul (September 7, 2008), "1956: NSU Breaks 200 MPH Barrier", The Vintagent, http://thevintagent.blogspot.com/2008/09/1956-nsu-breaks-200mph-barrier.html, retrieved 2013-09-16
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