NSU 251 OSL 1936 - Specifications & Review

Introducing the 1936 NSU 251 OSL: A Sporty Classic with Timeless Charm

The 1936 NSU 251 OSL stands as a testament to the golden age of motorcycling, merging striking design with innovative engineering. Positioned in the sport category, this motorcycle captivated riders with its blend of performance and practicality, making it a coveted choice for enthusiasts of that era. NSU, a name synonymous with quality and innovation, produced the 251 OSL during a time when motorcycling was not just a means of transport but a thrilling sport. This machine is not only a piece of history but a piece of art, showcasing the balance between form and function that defined its time.

At the heart of the 251 OSL lies a robust 242cc single-cylinder, four-stroke engine that produces an impressive 10.5 horsepower at 5200 RPM. Riders will appreciate the spirited performance of this powerplant, capable of propelling the motorcycle to a top speed of 100 km/h (62.1 mph). The engine is paired with a smooth-shifting four-speed gearbox that allows for nimble handling and responsive acceleration, making it a joy to navigate both city streets and winding country roads. With impressive fuel efficiency of 2.30 litres per 100 km, or 102.27 mpg, the 251 OSL proves to be a practical companion for those long rides, offering a delightful blend of power and economy.

Designed with a classic open double steel frame, the 251 OSL combines durability with a lightweight feel, tipping the scales at just 126 kg (277.8 lbs). Its compact dimensions (2000 mm in length and 1000 mm in height) offer an agile riding experience, while the expanding drum brakes front and rear ensure that stopping power is reliable and effective. The motorcycle is equipped with a practical kick starter, embracing the traditional charm of its era. Enthusiasts will also appreciate the simple yet effective carburettor fuel system and Bosch battery ignition, showcasing the engineering prowess of the time.

Pros and Cons of the 1936 NSU 251 OSL

Pros:

1. Efficient Fuel Consumption: With a remarkable fuel economy of 102.27 mpg, the 251 OSL allows for longer rides without the constant worry of refueling.
2. Sporty Performance: The combination of a spirited engine and lightweight chassis provides a thrilling riding experience that appeals to sport enthusiasts.
3. Classic Aesthetic: The vintage design and elegant lines make the 251 OSL a showstopper, perfect for collectors and classic motorcycle aficionados.

Cons:

1. Limited Power Output: With only 10.5 HP, it may not satisfy riders looking for high-performance capabilities in modern terms.
2. Drum Brakes: While adequate for its time, the expanding drum brakes may feel less responsive compared to modern disc brakes, requiring a more considerate riding style.
3. Kick Starter: The absence of an electric starter can be cumbersome for some riders, especially those accustomed to modern conveniences.

In summary, the 1936 NSU 251 OSL is not just a motorcycle; it's a journey back in time, offering a delightful glimpse into the spirit of early motorcycling. Its blend of performance, efficiency, and classic design continues to capture the hearts of motorcycle enthusiasts today.