Simplex Automatic 1943 - Specifications & Review

1943 Simplex Automatic Motorcycle: A Testament to Simplicity and Performance

The 1943 Simplex Automatic motorcycle is a remarkable piece of American engineering that emerged during a time of resource scarcity and innovation. Positioned in the all-round category, this motorcycle was designed to cater to the needs of everyday riders, offering a unique blend of functionality and ease of use. Its lightweight frame and straightforward design make it an excellent choice for both novice riders and seasoned enthusiasts looking for a nostalgia-infused ride. With its robust yet understated presence, the Simplex Automatic stands out as a symbol of practicality in the tumultuous era of World War II.

At the heart of the Simplex Automatic lies a spirited single-cylinder, two-stroke engine with a displacement of just 130 cc. Producing a modest 4 horsepower at 4000 RPM, this powerplant may not seem like much on paper, but its engineering fosters a lively riding experience. The engine's 6.5:1 compression ratio and efficient Tillotson carburettor work in harmony to deliver surprisingly responsive acceleration, making city commuting and short escapades pleasurable. The belt-driven final drive enhances ease of operation, allowing riders to focus on enjoying the journey rather than wrestling with gears. The motorcycle’s lightweight design, at just 61.2 kg (135 pounds), coupled with the power-to-weight ratio of 0.0653 HP/kg, enables nimble maneuverability, perfect for navigating crowded urban environments.

The Simplex Automatic is not just about performance; it also showcases innovative features that highlight its forward-thinking design. The duplex loop frame provides a sturdy yet flexible foundation, ensuring stability while maintaining a comfortable ride. The front suspension incorporates short rocker arms paired with dual coil springs, which effectively absorb bumps and irregularities in the road, enhancing overall ride quality. Though the rear suspension is rigid, it is compensated by the bike's lightweight construction, allowing for an exhilarating yet stable ride. Additionally, the dual spark plug ignition system provides reliable starting and efficient combustion, ensuring that the Simplex is ready to roll at a moment's notice.

#### Pros and Cons of the 1943 Simplex Automatic

Pros:

1. Lightweight and Maneuverable: Weighing only 61.2 kg, the Simplex Automatic is easy to handle, making it an excellent choice for new riders or those looking for a practical commuter.
2. Unique Design: Its vintage aesthetic and simplicity appeal to motorcycle enthusiasts who appreciate classic motorcycles, making it a standout in any collection.
3. Efficient Engine: The 130 cc two-stroke engine delivers adequate power for city riding while maintaining impressive fuel economy, perfect for daily use during a time of resource constraints.

Cons:

1. Limited Power Output: With only 4 HP, the motorcycle may feel underwhelming for those seeking high-speed performance or highway cruising capabilities.
2. Rigid Rear Suspension: The lack of rear suspension may lead to a less comfortable ride on uneven surfaces, especially for longer journeys.
3. Basic Features: While simplicity is a virtue, the lack of modern conveniences may not satisfy those accustomed to contemporary motorcycle technology and comfort features.

In summary, the 1943 Simplex Automatic remains an enduring symbol of practicality and ingenuity, offering a unique riding experience that pays homage to motorcycle heritage while serving the everyday needs of riders in its era.