NSU 251 SS 1929 - Specifications & Review

Discover the 1929 NSU 251 SS Motorcycle: A Vintage Sport Classic

Step back in time to the late 1920s, an era when motorcycles were not just modes of transport but embodiments of freedom and adventure. Enter the NSU 251 SS, a sport bike that captures the spirit of its time while offering a blend of performance and style that still captivates motorcycle enthusiasts today. With its sleek lines and classic design, the 251 SS stands out in the market as a testament to NSU's commitment to engineering excellence and innovation. This motorcycle was crafted for those who sought exhilaration on two wheels, making it a revered piece in the annals of motorcycle history.

At the heart of the NSU 251 SS lies a spirited 247 cc single-cylinder, four-stroke engine that delivers a respectable 10 horsepower at 4,400 RPM. This engine, paired with a chain final drive, allows the bike to reach an impressive top speed of 100 km/h (62.1 mph), making it a capable contender on both city streets and winding country roads. The combination of a 63 mm bore and 80 mm stroke provides a smooth and engaging ride, allowing enthusiasts to experience the thrill that only a vintage sport motorcycle can deliver. With its air-cooled setup and reliable carburettor, the 251 SS exemplifies the charm and simplicity of pre-war engineering, offering riders a direct connection to the machine.

The NSU 251 SS is not just about performance; it also boasts a range of features that highlight its technical prowess. Equipped with expanding drum brakes at both the front and rear, this motorcycle ensures adequate stopping power—a crucial aspect for riders who value safety without compromising style. Weighing in at just 110 kg (242.5 pounds), the bike offers a favorable power-to-weight ratio of 0.0909 HP/kg, making it nimble and responsive in various riding conditions. The kick starter adds a touch of nostalgia, allowing riders to engage with the machine in a way that modern electric starters simply cannot replicate.

#### Pros and Cons of the 1929 NSU 251 SS

Pros:

1. Classic Design: The vintage aesthetic appeals to collectors and enthusiasts alike, making it a standout piece in any motorcycle collection.
2. Engaging Performance: With a lively engine and lightweight chassis, the 251 SS offers an exhilarating riding experience that celebrates the spirit of sport biking.
3. Simplicity of Mechanics: The straightforward engineering and carburettor setup make maintenance easier for those who appreciate hands-on work.

Cons:

1. Limited Power Output: With only 10 HP, the performance may feel restricted compared to modern motorcycles, especially for riders seeking high-speed thrills.
2. Drum Brakes: While effective for their time, the drum brake system may not provide the same level of stopping power or responsiveness found in contemporary disc brakes.
3. Kick Start Only: The absence of an electric start might deter some riders who prefer the convenience of modern technology, making it less user-friendly for casual riders.

In summary, the 1929 NSU 251 SS is a captivating blend of vintage charm and spirited performance, making it a beloved choice amongst motorcycle aficionados who appreciate the rich history and character of early sport bikes.