Classic Motorcycle buy and sell vintage motorcycles. more details Manufacturer: DKW Model: NZ500 Year: 1941 Displacement: 489 cc Cylinder: 2 Engine type: 2-stroke Bore / Stroke: 64 x 76 mm Power: @ 4200 rpm Top Speed: 115 km/h Units: Frame number: 553460 Engine number: 1121082 DKW was founded in Zschopau in 1919 by Danish engineer Jorgen Rasmussen and built its first motorcycle power unit, a single-cylinder, clip-on engine for bicycle attachment, in 1921. Designed by Hugo Ruppe, this 122cc motor was a two-stroke, and DKW would remain faithful to this engine type from then on, becoming world leaders in two-stroke design in the 1930s thanks to the prescient adoption of the Schnuerle loop-scavenge system. The latter used flat-topped pistons rather than the then-conventional deflector-crown type, relying on carefully angled transfer ports to direct the incoming charge around the cylinder. DKW was Continental Europe’s largest motorcycle maker at this time, manufa
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