Ariel 4G Square Four 1000 1940 - Specifications & Review

Introducing the 1940 Ariel 4G Square Four 1000, affectionately known as the “Squariel,” this motorcycle stands as a testament to British engineering and design flair of the early 20th century. Positioned in the allround category, the 4G Square Four is not just a bike; it's a piece of history that combines performance and style, appealing to both collectors and riding enthusiasts alike. With its unique square four-cylinder engine and elegant tubular single-loop frame, the Squariel is a striking presence on the road, embodying the spirit of its era while pushing the boundaries of motorcycle innovation.

At the heart of the Squariel lies its remarkable 997cc square four-cylinder engine, capable of producing 35 horsepower at 5,500 RPM. This power allows the motorcycle to reach a top speed of 140 km/h (87 mph), making it a thrilling ride for those who crave excitement. The air-cooled engine, mated to a smooth-shifting four-speed gearbox, provides a unique riding experience. The power delivery is linear and predictable, making it suitable for both spirited outings and long-distance cruising. With a 6.0:1 compression ratio and a well-designed SU MC2 carburettor, the engine is as efficient as it is powerful, allowing riders to enjoy the road ahead with confidence.

The 1940 Ariel 4G Square Four 1000 is not just about raw power; it boasts several key features that enhance its riding dynamics and comfort. The motorcycle is equipped with telescopic front forks and a plunger-link rear suspension, providing a smooth and controlled ride over varied terrain. The drum brakes, with a front diameter of 203 mm and a rear diameter of 178 mm, offer reliable stopping power, ensuring safety and stability during any journey. Additionally, the fuel capacity of 23 liters (6.08 gallons) allows for extended rides without frequent stops, making it an ideal companion for those long, winding roads.

Pros:

1. Unique Engine Design: The square four-cylinder engine not only delivers impressive performance but also sets the Squariel apart from its contemporaries.
2. Comfortable Ride: The combination of telescopic front forks and plunger-link rear suspension provides excellent handling and comfort for long rides.
3. Historical Significance: As a classic motorcycle designed by the legendary Edward Turner, the Squariel holds a special place in motorcycle history, appealing to collectors and enthusiasts alike.

Cons:

1. Weight: At 193 kg (425.5 pounds), the Squariel is on the heavier side, which may affect maneuverability for some riders.
2. Drum Brakes: While reliable, the drum brakes may not offer the same stopping performance or feel as modern disc brakes, requiring a more cautious riding style.
3. Kick Starter: The traditional kick starter may be less convenient compared to modern electric starters, particularly for those accustomed to the ease of modern technology.

In summary, the 1940 Ariel 4G Square Four 1000 is an iconic motorcycle that captivates with its elegance and engineering prowess. Whether you're traversing the open road or displaying it at a classic bike show, the Squariel promises to deliver an experience that is as thrilling as it is nostalgic.