DKW SB 500
DKW | |
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DKW SB 500 A |
|
SB 500 | |
Manufacturer | Auto Union |
Production period | 1934 to 1939 |
class | motorcycle |
Motor data | |
Two-cylinder two- stroke engine with reverse scavenging | |
Displacement (cm³) | 494 |
Power (kW / PS ) | 11/15 at 4000 rpm |
Top speed ( km / h) | 115 |
transmission | 3 courses |
drive | Chain |
Brakes | drums |
Wheelbase (mm) | 1385 |
Dimensions (L × W × H, mm): | 2125 × 820 × 950 |
Seat height (cm) | 67.5 |
Empty weight (kg) | approx. 165-180 |
successor | DKW NZ 500 |
The DKW SB 500 is a motorcycle that Auto Union built from 1934 to 1939 at the DKW plant in Zschopau . It is the most powerful model in the SB series, which was introduced in 1934 and encompassed four displacement classes and ended with the SB 500. There are two versions; around 6,300 of the first with a short frame and around 13,300 of the second with a long frame were built. The successor to the SB series is the NZ series introduced in 1938. An SB 500 built on February 6, 1939 was the 500,000. DKW motorcycle. The jubilee machine was put into operation by the world record driver Walfried Winkler .
engine and gears
The DKW SB 500 has a two-cylinder two-stroke engine with the licensed for DKW Schnürle - reverse circulation , a technique for reducing the high fuel consumption of two-stroke engines. Consumption fell by around 40% compared to conventional designs and moved into the range of the four-stroke engines of the time. The engine has a displacement of 494 cm³ (bore and stroke 68 mm) and develops 15 hp at 4000 rpm. The ignition advance is automatic. The advertisement said: “The superior performance of the DKW two-cylinder types, their incredibly quick suit, their constant readiness to start and, last but not least, the astonishing cost-effectiveness that has been confirmed a thousand times over, have more than 10,000 DKW front cars sold in 1933 sufficiently proven. It made sense to use this DKW special two-cylinder engine with 500 cc as a drive unit for a motorcycle. ”The luxury version of the SB 500 has an electric starter ( Dynastartanlage ) instead of a kick starter . A special feature was the drive shock absorber for smooth starting and shifting.
The power is transmitted via gears from the engine to a manual three-speed gearbox ( primary drive ). The gearbox is interlocked with the engine. The shift lever is guided in a setting on the right of the tank. An additional foot switch was available from February 1939 for an additional charge of RM 25.00 , also on the right-hand side.
Frame and chassis
The chassis is a pressed steel profile frame with a beam and connection for a sidecar. The frame connections are screwed. The front wheel is guided on a parallelogram fork named by DKW special suspension fork with coil spring, shock absorber and steering damper. The rear wheel is not sprung. Both wheels have drum brakes, operated with a hand lever and cable at the front, and with a foot lever and rod at the rear. The brakes can each be adjusted with a wing nut . Additional features include the saddle tank introduced by DKW in 1929 , a "swinging saddle that can be adjusted while driving with a sports rim", an illuminated dashboard with a speedometer, adjustable footrests, hinged rear fenders and, in the luxury version, double headlights.
Custom order
In September 1938, a special version of SB 500 was with colored paint and white wings on the Iraqi King Ghazi I delivered. The partially gold-plated tank was adorned with a crown.
Technical specifications
DKW SB 500 | Data |
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engine | 2-cylinder two-stroke gasoline engine, removable light metal cylinder head |
Rinsing method | Reverse rinsing with flat flask |
cooling | Air cooling (airflow) |
Displacement | 494 cc |
Bore × stroke | 68 × 68 mm |
Power in hp (kW) | 15 (11) at 4000 rpm |
compression | 1: 5.7 |
Carburetor | Amal |
Engine lubrication | Two-stroke mix 1:25 |
coupling | Double disc clutch |
transmission | 3-speed gearbox with manual shift ( dog clutch ) |
Rear wheel drive | Single roller chain with guard plate |
frame | Pressed steel frame |
Front suspension | Parallelogram fork with coil spring |
Rear suspension | none (rigid frame) |
wheelbase | 1385 mm |
overall length | 2125 mm |
Saddle height above the ground | 675 mm |
wheel size | 3.50-19 |
Brakes | Drum brakes |
Weight on the front wheel | 77 kg (85 kg) |
Weight on rear wheel | 88 kg (95 kg) |
tank | 13 liters |
Top speed | 115 km / h |
Price (1939) | 1,020 RM (equivalent to around 4,400 EUR today ) |
The information in brackets indicates the weight of the luxury model or the SB 500 A.
Individual evidence
- ↑ a b c Information from the DKW motorcycle club with facsimiles of sales brochures . Retrieved August 1, 2020.
- ↑ a b c d Frank Rönicke: Type compass DKW motorcycles 1920–1979 . Motorbuch Verlag, Stuttgart 2007, ISBN 978-3-613-02633-9 .
- ↑ The 500,000. DKW machine rolled off the production line. In: Innsbrucker Nachrichten , February 9, 1939, p. 13 (online at ANNO ).
- ↑ The 500,000. DKW. Motorcycle. In: Kleine Volks-Zeitung , February 12, 1939, p. 14 (online at ANNO ).
- ^ Siegfried Rauch: DKW - The history of a world brand . 3rd edition Motorbuch Verlag, Stuttgart 1988, ISBN 3-87943-759-9 , p. 62.
- ↑ a b DKW-Geyer. Data sheet . Retrieved August 1, 2020.
- ↑ Peter Kirchberg, Thomas Erdmann, Ralph Plagmann: The wheel of time . Edited by Audi AG, Audi Tradition, Verlag Delius Klasing, ISBN 3-7688-1011-9 .
- ↑ How much can you design for a motor vehicle? In: Österreichische Auto-Rundschau. Wiener Kraftfahrer-Zeitung / Austrian car. Motorad-Zeitung / Oesterreichisches Auto und Motorad-Zeitung / Der Motorfahrer / Automobil- und Motorrad-Zeitung. Der Motorfahrer , March 10, 1939, p. 8 (online at ANNO ).
- ↑ This figure was based on the template: Inflation determined, rounded to a full 100 EUR and compares 1939 (year of publication of the price list) with January 2020.