Simplex Automatic 1948 - Specifications & Review

Introducing the 1948 Simplex Automatic: A Vintage Gem in the Allround Category

Step back into the late 1940s, a time when freedom on two wheels meant something truly special. Enter the 1948 Simplex Automatic—a motorcycle that encapsulates the spirit of its era while offering a unique blend of simplicity and charm. Positioned as an allrounder, this bike was designed to appeal to a broad audience, from casual riders to those seeking a reliable commuter. Its lightweight frame and easy handling made it an attractive option for new motorcyclists and seasoned riders alike, paving the way for an unforgettable riding experience.

Unleashing the Power of the Simplex Engine

At the heart of the Simplex Automatic lies a spirited 130cc single-cylinder, two-stroke engine that produces a modest yet spirited 4 horsepower at 4000 RPM. This engine, with a compression ratio of 6.5:1 and a bore and stroke of 50.8 x 64.3 mm, delivers a delightful balance of performance and efficiency, perfect for zipping through city streets or enjoying leisurely rides on country roads. The innovative use of a Tillotson carburettor and a dual spark plug ignition system ensures reliability and smooth operation, while the unique belt final drive offers a seamless transition of power to the rear wheel. Riders will appreciate the bike's lightweight design—at just 61.2 kg (135 pounds)—which enhances maneuverability and responsiveness, making it an excellent choice for both new and experienced motorcyclists.

Innovative Features and Timeless Technology

The Simplex Automatic stands out not only for its performance but also for its engineering. Its duplex loop frame provides a strong yet lightweight structure, while the front suspension utilizes short rocker arms paired with two coil springs to deliver a comfortable ride. The rear suspension, being rigid, adds to the bike's stability, creating a confident ride even on less-than-perfect roads. With a fuel capacity of 9.46 liters (2.50 gallons), the Simplex Automatic is ready for longer jaunts without the frequent need for refueling. This motorcycle is a testament to post-war ingenuity, combining practicality with a touch of vintage flair that continues to captivate collectors and enthusiasts today.

Pros and Cons of the 1948 Simplex Automatic

Pros:

1. Lightweight and Maneuverable: Weighing in at just 61.2 kg, this motorcycle is incredibly easy to handle, making it suitable for riders of all experience levels.
2. Simplicity of Design: The basic two-stroke engine and straightforward mechanics allow for easy maintenance, which is a significant advantage for DIY enthusiasts.
3. Classic Aesthetic Appeal: With its vintage styling, the Simplex Automatic is a head-turner that embodies the charm of the 1940s, perfect for those who appreciate classic motorcycles.

Cons:

1. Limited Power Output: With only 4 HP to offer, the Simplex Automatic may struggle to keep up with modern traffic, particularly on highways.
2. Rigid Rear Suspension: While providing stability, the rigid rear can result in a less cushioned ride, particularly over rough terrain.
3. Small Fuel Capacity: The 2.50-gallon tank may require more frequent stops on longer rides, potentially limiting travel range compared to contemporary motorcycles.

In summary, the 1948 Simplex Automatic is a delightful blend of vintage charm and practical engineering, making it an enduring favorite among motorcycle enthusiasts and collectors alike. Its unique design and performance characteristics ensure it remains a standout in the world of classic motorcycles.