Simplex Automatic 1946 - Specifications & Review

The 1946 Simplex Automatic Motorcycle: A Classic Allrounder

Step back into the post-war era with the 1946 Simplex Automatic motorcycle, a charming and practical machine that captured the spirit of its time. Designed for the everyday rider, the Simplex Automatic emerged as a versatile option for those seeking a reliable and economical mode of transportation. With its unique blend of functionality and simplicity, it quickly became a favorite among urban commuters and rural adventurers alike. This allround motorcycle was not just about getting from point A to point B; it offered a glimpse into the evolving landscape of motorcycling in the mid-20th century.

At the heart of the Simplex Automatic lies a 130cc single-cylinder, two-stroke engine that delivers a modest yet spirited 4 horsepower at 4000 RPM. This lightweight power plant, with a compression ratio of 6.5:1 and a bore-stroke ratio of 50.8 x 64.3 mm, provides an engaging ride that is both responsive and manageable. The engine delivers its power smoothly via a belt final drive, making for an enjoyable experience whether navigating city streets or cruising along scenic backroads. Riders will appreciate the bike's manageable weight of just 61.2 kg (135 lbs), allowing for nimble handling and effortless maneuverability—ideal for both seasoned enthusiasts and newcomers to the world of motorcycling.

The Simplex Automatic showcases a variety of features that highlight its innovative design and engineering. Its duplex loop frame provides both strength and stability, while the front suspension, equipped with short rocker arms and dual coil springs, enhances comfort during rides. The rigid rear suspension maintains a solid connection with the road, contributing to the bike's stability. Additionally, the use of a Tillottson carburettor and a dual-spark plug ignition system further demonstrate the Simplex's commitment to reliability and ease of maintenance. With a fuel capacity of 9.46 liters (2.50 gallons), riders can enjoy longer journeys without the constant worry of refueling.

Pros:

1. Lightweight and nimble: At just 61.2 kg (135 lbs), the Simplex Automatic is easy to handle, making it perfect for urban commuting and beginner riders.
2. Unique vintage appeal: Its classic design and styling are sure to turn heads and attract admiration from motorcycle enthusiasts and collectors alike.
3. Economical performance: The efficient two-stroke engine delivers decent power while maintaining low fuel consumption, making it a cost-effective choice for transportation.

Cons:

1. Limited power output: With only 4 horsepower, the Simplex Automatic may struggle to keep up with modern traffic, making it less suited for highway riding.
2. Rigid rear suspension: While it offers stability, the lack of rear suspension travel can lead to a harsher ride over uneven surfaces.
3. Simplicity may limit features: The absence of advanced technology and modern conveniences may deter some riders looking for a more contemporary experience.

In summary, the 1946 Simplex Automatic motorcycle is a delightful blend of vintage charm and practical performance. Whether you’re a collector or a rider seeking a unique experience, this model exemplifies the essence of post-war motorcycling—a time when simplicity and functionality reigned supreme.