NSU 601 OSB 1941 - Specifications & Review

The 1941 NSU 601 OSB is a remarkable piece of motorcycle history, embodying the spirit of pre-war engineering excellence. As a sport model in an era when speed and performance were gaining unprecedented popularity, this motorcycle was designed to capture the hearts of enthusiasts and riders alike. Its robust styling and elegant lines speak to the craftsmanship of NSU, a pioneer in innovative motorcycle design. The 601 OSB stands out as a testament to a bygone era, where the thrill of the ride was paramount and the allure of the open road beckoned.

At the heart of the NSU 601 OSB lies a spirited single-cylinder, four-stroke engine with a displacement of 562 cc. This powerplant delivers a respectable 26 horsepower at 4950 RPM, showcasing a balance between power and manageable performance. The bore and stroke measurements of 85.0 x 99.0 mm contribute to a smooth and responsive power delivery, making it an excellent choice for spirited rides on winding roads. The air-cooled design ensures reliability, while the Amal carburettor optimizes fuel delivery for a thrilling experience. Weighing in at just 150 kg, the power-to-weight ratio of 0.1733 HP/kg allows for a nimble and engaging ride, perfect for those who appreciate the thrill of sport motorcycling.

Technologically, the NSU 601 OSB is equipped with features that reflect the ingenuity of its time. The expanding drum brakes at both the front and rear provide adequate stopping power, allowing riders to confidently tackle the curves and straights alike. The kick starter mechanism is a nod to the simplicity and rawness of the era, appealing to purists who enjoy the tactile experience of starting their machine manually. The overall design of the motorcycle is not just functional; it exudes charisma, with a vintage aesthetic that continues to attract collectors and riders who cherish the classic motorcycle experience.

Pros:

1. Heritage Design: The classic styling and craftsmanship make it a standout piece for collectors and vintage motorcycle enthusiasts.
2. Lightweight and Agile: With a low weight of 150 kg, the 601 OSB offers nimble handling, making it perfect for sport riding and maneuvering through tight corners.
3. Engaging Riding Experience: The single-cylinder engine provides a raw and direct connection to the road, allowing riders to truly feel the power and performance of the machine.

Cons:

1. Limited Power Output: While 26 HP is respectable for its time, modern riders may find it lacking compared to contemporary sport motorcycles.
2. Basic Brake System: The drum brakes, while adequate for the era, may not deliver the stopping power and responsiveness expected by today's standards.
3. Kick Start Only: The absence of an electric start may be a hassle for some riders, especially in adverse weather conditions or when the bike hasn't been ridden in a while.

The 1941 NSU 601 OSB is more than just a motorcycle; it's a piece of history that invites riders to experience the thrill of classic sport biking. Its balance of performance, style, and nostalgia makes it a coveted model among enthusiasts looking to embrace the golden age of motorcycling.