DKW SB 500 1939 - Specifications & Review

Introducing the 1939 DKW SB 500, a remarkable motorcycle that beautifully embodies the spirit of pre-war engineering and innovation. Positioned in the allround category, this German classic was designed for versatility, making it an exceptional choice for both leisurely rides and practical commuting. With its unique blend of style and functionality, the SB 500 reflects the ethos of DKW, a brand renowned for its pioneering spirit in the motorcycle industry. As the world teetered on the brink of change, this model stands as a testament to the craftsmanship and ingenuity of its era, appealing to both collectors and enthusiasts alike.

At the heart of the DKW SB 500 is a robust twin-cylinder, two-stroke engine, boasting a displacement of 493.90 ccm. This powerplant delivers an impressive 15 horsepower at 4,000 RPM, allowing the motorcycle to achieve a top speed of 115 km/h (71.5 mph). Riders will appreciate the smooth power delivery and responsive throttle, which is complemented by a compression ratio of 5.7:1. The Amal carburettor ensures efficient fuel delivery, while the air-cooling system maintains optimal engine temperature, making it a reliable companion for any journey. With a weight of 165 kg (363.8 pounds) and a power-to-weight ratio of 0.0909 HP/kg, the SB 500 provides an engaging riding experience that feels nimble and spirited on the road.

The DKW SB 500 is equipped with features that highlight the advanced technology of its time. The motorcycle’s rigid rear suspension contributes to a solid ride, while expanding drum brakes at both the front and rear provide dependable stopping power. The simplicity of its design is paired with a chain final drive, ensuring that maintenance remains straightforward. The balanced bore and stroke of 68.0 mm by 68.0 mm (2.7 x 2.7 inches) optimize engine performance, making the SB 500 a well-rounded machine that is as enjoyable to ride as it is to admire.

PROs:

1. Classic Design: The vintage aesthetics and craftsmanship of the 1939 DKW SB 500 make it a sought-after piece for collectors and enthusiasts.
2. Smooth Power Delivery: The twin-cylinder engine offers a satisfying ride with responsive acceleration, perfect for both urban commuting and open-road cruising.
3. Simplicity in Maintenance: With its straightforward mechanical setup, including a chain final drive and air cooling, the SB 500 is easy to maintain for the hands-on rider.

CONs:

1. Limited Power: While adequate for its time, the 15 HP output may feel underwhelming compared to modern motorcycles, limiting performance for more aggressive riding styles.
2. Rigid Rear Suspension: The lack of rear suspension technology may result in a less comfortable ride over uneven surfaces, especially on longer journeys.
3. Drum Brakes: The expanding drum brakes, while reliable, may not provide the stopping power or responsiveness that contemporary riders have come to expect from modern disc brake systems.

In summary, the 1939 DKW SB 500 is a fascinating blend of historical significance and practical engineering, making it a valuable addition to any motorcycle enthusiast’s collection. Whether you appreciate it for its classic design or its genuinely engaging riding experience, the SB 500 remains a cherished piece of motorcycle history.