NSU 251 OSL WH 1938 - Specifications & Review

Introducing the 1938 NSU 251 OSL WH, a classic motorcycle that epitomizes the spirit of pre-war engineering and design. As part of NSU's all-rounder category, this bike was crafted for versatility, appealing to a broad spectrum of riders from daily commuters to weekend adventurers. With its charming vintage aesthetics and solid craftsmanship, the 251 OSL WH effortlessly captures the essence of the late 1930s motorcycle culture, making it not only a reliable means of transportation but also a sought-after collectible among enthusiasts and historians alike.

At the heart of the NSU 251 OSL WH lies a robust single-cylinder, four-stroke engine with a displacement of 242cc. This setup produces a respectable 10.5 horsepower at 5,300 RPM, delivering a top speed of 95 km/h (59 mph). The engineering marvel behind this bike includes a bore and stroke of 64.0 x 75.0 mm, allowing for a well-rounded power delivery that suits both urban riding and more spirited escapades. The air-cooled engine, combined with a chain final drive, ensures that the rider enjoys a smooth and engaging experience. Whether navigating through city streets or cruising along scenic backroads, the 251 OSL WH's nimble frame and manageable weight of 144 kg (317.5 lbs) make it an accessible and enjoyable ride.

The NSU 251 OSL WH is not just about performance; it also boasts a range of features that enhance the riding experience. Its sturdy steel frame, coupled with expanding drum brakes at both the front and rear, provides reliable stopping power, ensuring safety during rides. The bike is equipped with an Amal carburettor, which offers a straightforward tuning process, making maintenance a breeze for the DIY enthusiast. Additionally, the kick starter mechanism adds to the authentic vintage appeal, evoking a sense of nostalgia as riders bring this fine machine to life with a hearty kick.

Pros:

1. Versatile Performance: The 251 OSL WH excels in various riding conditions, making it suitable for both city commuting and leisurely weekend rides.
2. Classic Aesthetic: With its vintage style, this motorcycle is a head-turner, appealing to those who appreciate classic designs and historical significance.
3. User-Friendly Mechanics: The simplicity of the engine and carburettor design allows for easy maintenance, making it ideal for riders who enjoy hands-on care.

Cons:

1. Limited Power Output: With just 10.5 HP, the motorcycle may feel underpowered for those seeking high-speed thrills.
2. Drum Brakes: While reliable, the drum brakes may not provide the same level of stopping power and responsiveness found in modern disc brake systems.
3. Kick Start Only: The absence of an electric starter may deter some riders who prefer the convenience of modern starting systems, especially in cold conditions.

In summary, the 1938 NSU 251 OSL WH offers a delightful blend of performance, nostalgia, and mechanical simplicity, making it a cherished piece of motorcycle history that continues to resonate with enthusiasts today.