NSU 351 OT 1938 - Specifications & Review

Introducing the 1938 NSU 351 OT: A Sporty Classic

The 1938 NSU 351 OT stands as a testament to the innovative spirit of pre-war motorcycle design, capturing the hearts of enthusiasts and collectors alike. Positioned firmly in the sport category, this motorcycle is not just a machine; it's a piece of history that reflects the burgeoning era of speed and style in the late 1930s. With its distinctive lines and robust engineering, the 351 OT appeals to riders seeking both performance and classic aesthetics, ensuring its place in the pantheon of vintage motorcycles.

Engine Performance and Riding Dynamics

At the heart of the NSU 351 OT lies a single-cylinder, four-stroke engine with a displacement of 331 ccm (20.20 cubic inches). Producing a respectable 12.50 HP at 5020 RPM, this powertrain offers a lively performance for its time, with a top speed of 105 km/h (65.2 mph)—an exhilarating figure that showcases its sporty credentials. The engine's bore and stroke of 75.0 mm each contribute to a well-balanced power delivery, while the air-cooled design ensures reliability during spirited rides. Riders can expect a responsive throttle and a satisfying connection to the road, thanks to the chain final drive that provides a direct, engaging transmission of power.

Key Features and Technology

The NSU 351 OT is equipped with essential features that enhance both its functionality and rider experience. The carburettor system, specifically the Bing AJF 2/20, ensures precise fuel delivery for optimal engine performance, while the drum brakes—both front and rear—provide dependable stopping power, characteristic of the era. Weighing in at 150 kg (330.7 pounds), this motorcycle strikes a balance between agility and stability, making it a joy to maneuver on winding roads or through urban landscapes. Its compact dimensions, with a length of 2000 mm (78.7 inches) and width of 760 mm (29.9 inches), further contribute to its sportiness, allowing riders to feel confident and in control.

Pros and Cons of the 1938 NSU 351 OT

Pros:

1. Classic Design: The 351 OT embodies timeless aesthetics that appeal to vintage motorcycle enthusiasts.
2. Responsive Performance: With a capable engine and chain drive, riders experience an engaging and lively ride.
3. Solid Build Quality: NSU's reputation for engineering excellence shines through in the durability and reliability of this motorcycle.

Cons:

1. Limited Power Output: While adequate for its time, the horsepower may not satisfy modern performance expectations.
2. Drum Brakes: Although effective, the braking system may feel less responsive compared to contemporary disc brakes.
3. Weight: The motorcycle's weight can affect handling compared to lighter modern sport bikes, especially in tight corners.

In summary, the 1938 NSU 351 OT is not just a motorcycle; it's a piece of history that combines spirited performance with classic charm, making it an enduring favorite among collectors and riders who appreciate the golden age of motorcycling.