NSU Neckarsulmer 4PS 1905 - Specifications & Review

Introducing the 1905 NSU Neckarsulmer 4PS, a pioneering motorcycle that stands out in the early 20th century sport category. As one of the first models produced by the renowned NSU Motorenwerke, this motorcycle reflects the innovative spirit and engineering prowess of its time. With a design that melds aesthetics and functionality, the Neckarsulmer 4PS quickly captured the hearts of early motorcycling enthusiasts, offering a glimpse into the thrilling world of personal transportation that was just beginning to evolve.

At the heart of the Neckarsulmer 4PS is a robust single-cylinder, four-stroke engine that displaces 482 cubic centimeters. Generating an impressive 4 horsepower at 4,200 RPM, this engine propels the motorcycle to a top speed of 70 km/h (43.5 mph), making it a competitive choice for sport riding in its era. The bore and stroke dimensions of 85 mm each create a balanced engine design that allows for a smooth power delivery, while the carburettor fuel system ensures efficient operation. Additionally, the liquid cooling system helps maintain optimal engine temperatures, allowing enthusiasts to enjoy longer rides without the worry of overheating. Riding the Neckarsulmer 4PS offers a unique experience, as its lightweight frame (weighing only 80 kg or 176.4 pounds) and belt final drive contribute to nimble handling and agility on the road.

The 1905 NSU Neckarsulmer 4PS is not just about performance; it also showcases several key features and technologies that were ahead of its time. Its steel tube frame provides a sturdy yet lightweight structure, allowing for enhanced performance and ride quality. The motorcycle’s fuel capacity of 9 liters (2.38 gallons) ensures that riders can enjoy extended journeys, making it well-suited for both spirited rides and leisurely outings. The artful blend of design and engineering is evident in every aspect of this machine, inviting riders to appreciate the craftsmanship that laid the groundwork for future innovations in motorcycle design.

Pros and Cons of the 1905 NSU Neckarsulmer 4PS:

Pros:

1. Lightweight Design: At just 80 kg, the 4PS offers excellent maneuverability and agility, perfect for sport riding.
2. Historic Significance: As one of NSU's early motorcycles, it represents a pivotal moment in motorcycling history, making it a sought-after classic for collectors.
3. Solid Engine Performance: The single-cylinder four-stroke engine provides adequate power for its size, allowing riders to reach a respectable top speed of 70 km/h.

Cons:

1. Limited Power Output: With only 4 HP, the performance may feel underwhelming compared to modern motorcycles, particularly for those accustomed to higher horsepower.
2. Basic Technology: The 1905 design lacks many of the advanced features found in contemporary motorcycles, such as sophisticated suspension systems or electronic fuel injection.
3. Maintenance Requirements: The age and design of the motorcycle may require more frequent maintenance and care, which can be a concern for some modern riders.

The 1905 NSU Neckarsulmer 4PS stands as a testament to the evolution of motorcycling, offering a blend of performance and historical charm for enthusiasts and collectors alike.