NSU 251 SS 1928 - Specifications & Review

Introduction to the 1928 NSU 251 SS

The 1928 NSU 251 SS stands as a remarkable testament to the early days of motorcycle engineering, capturing the essence of the sport category with its blend of elegance and performance. As one of the pioneering models from NSU, a manufacturer renowned for its innovative spirit, the 251 SS was designed to cater to the needs of both budding enthusiasts and seasoned riders seeking excitement on two wheels. With its sleek lines and classic styling, this motorcycle not only embodies the spirit of the roaring twenties but also delivers an impressive riding experience that has made it a cherished classic among collectors and enthusiasts alike.

Engine Performance and Riding Characteristics

At the heart of the NSU 251 SS lies a spirited single-cylinder, four-stroke engine boasting a displacement of 247 cc. Capable of producing 10 horsepower at 4,400 RPM, this power unit enables the motorcycle to reach a top speed of 100 km/h (62.1 mph), making it a formidable contender on the roads of its time. The engine's robust performance is complemented by a 3-speed gearbox, providing riders with the ability to shift smoothly through the gears while enjoying the thrill of acceleration. The air-cooled design ensures that the engine maintains optimal temperatures even during spirited rides, creating an exhilarating experience with every twist of the throttle.

Key Features and Technology

The NSU 251 SS is equipped with a range of features that highlight its advanced engineering for the era. Its drum brakes, both front and rear, provide dependable stopping power, while the chain final drive ensures efficient power transfer from the engine to the wheels. The simplicity of its carburettor fuel system allows for easy maintenance, while the classic kick starter pays homage to the era's traditional starting methods. Weighing in at just 110 kg (242.5 pounds), the motorcycle offers a commendable power-to-weight ratio of 0.0909 HP/kg, enabling nimble handling and responsiveness that riders will appreciate, whether they are navigating city streets or tackling country roads.

Pros and Cons

Pros:

1. Classic Styling: The NSU 251 SS showcases timeless design elements that appeal to vintage motorcycle enthusiasts.
2. Lightweight Build: Its relatively low weight contributes to agile handling and maneuverability.
3. Reliable Performance: The single-cylinder engine offers a spirited ride, making it an engaging choice for sport riding.

Cons:

1. Limited Power: While adequate for its time, modern riders may find the 10 HP engine underwhelming compared to contemporary motorcycles.
2. Basic Features: The lack of advanced technology and amenities may deter those seeking a more modern riding experience.
3. Maintenance Requirements: As with many vintage bikes, finding replacement parts and maintaining the NSU 251 SS can be challenging for owners.

In summary, the 1928 NSU 251 SS is a motorcycle that beautifully encapsulates the spirit of early motorcycling, merging performance with charm. Whether you’re a collector or a rider who appreciates the rich history of motorcycles, the 251 SS is a splendid choice that promises to deliver both nostalgia and excitement.