Ariel 4G Square Four Mark I 1953 - Specifications & Review

Introducing the 1953 Ariel 4G Square Four Mark I, a quintessential piece of motorcycle heritage that captures the spirit of post-war British engineering. Known affectionately as the "Squariel," this remarkable machine was designed by the visionary Edward Turner, who sought to create a versatile all-rounder that could comfortably navigate both the bustling streets of urban landscapes and the open roads of the countryside. With its unique square four-cylinder engine configuration, the 4G Square Four stands out in an era dominated by more conventional designs, offering enthusiasts a blend of distinctive aesthetics and innovative engineering that still resonates today.

At the heart of the 1953 Ariel 4G Square Four Mark I lies a 995cc square four-cylinder engine, delivering a robust 35 horsepower at 5,500 RPM. This impressive output translates into a top speed of 144.8 km/h (90 mph), allowing riders to experience a thrilling rush on the open road. The engine's 6.0:1 compression ratio, coupled with the SU MC2 carburettor, ensures smooth throttle response and reliable performance, while the 4-speed gearbox provides seamless shifts, making it an enjoyable ride for both novice and seasoned motorcyclists. The air-cooled design enhances reliability, allowing riders to confidently traverse long distances without the worry of overheating.

The 4G Square Four's design is not only innovative but also functional, boasting a tubular single-loop frame that contributes to its lightweight handling and stability. Equipped with an oil-damped telescopic front suspension and a plunger-link rear suspension, this motorcycle offers a comfortable ride over varying terrain. The drum brakes, with a 203 mm front diameter and a 178 mm rear diameter, provide adequate stopping power, ensuring safe handling. Riders can choose from an array of classic color options, including striking red with chrome accents or timeless black with chrome, further enhancing its vintage appeal.

Pros:

1. Unique Engine Design: The square four-cylinder engine offers a distinctive sound and smooth power delivery, setting it apart from more common motorcycle designs.
2. Comfortable Ride: The advanced suspension system provides excellent comfort and stability, making long rides more enjoyable.
3. Versatile Performance: With its blend of power and handling, the 4G Square Four is well-suited for both city commuting and longer journeys.

Cons:

1. Weight Considerations: At 197 kg (434.3 lbs), some riders may find the bike a bit heavy, especially in low-speed maneuvers.
2. Drum Brakes: While adequate for the time, the drum brake system may not provide the same stopping power as modern disc brakes, requiring more careful riding.
3. Kick Start Only: The absence of an electric start may deter some riders who prefer the convenience offered by modern motorcycles.

In conclusion, the 1953 Ariel 4G Square Four Mark I is a captivating blend of vintage charm and engineering prowess, making it a valuable addition to any motorcycle enthusiast's collection. Its unique design and solid performance characteristics ensure that it remains a cherished classic, offering a glimpse into a golden era of motorcycling.