Ariel 4G Square Four 1000 1948 - Specifications & Review

Introducing the 1948 Ariel 4G Square Four 1000

The 1948 Ariel 4G Square Four 1000, affectionately known as the "Squariel," holds a revered place in motorcycle history, marrying innovative design with classic engineering. Developed by the legendary Edward Turner, this all-rounder was positioned strategically in the post-war market to cater to enthusiasts looking for a reliable and versatile ride. The Square Four was not just a motorcycle; it was a statement of sophistication and performance, appealing to those who desired a blend of style and substance in their two-wheeled adventures.

Engine Performance and Riding Characteristics

At the heart of the Squariel lies its distinctive square four-cylinder engine, displacing a robust 995 ccm. Delivering a respectable 35 horsepower at 5500 RPM, the engine produces a delightful symphony of mechanical harmony that resonates through its air-cooled configuration. With a compression ratio of 6.0:1 and a bore and stroke of 65.0 x 78.0 mm, the 4G Square Four delivers smooth power across the rev range, making it a joy to ride. Capable of reaching a top speed of 140 km/h (87 mph), the motorcycle provides the perfect balance between spirited performance and everyday usability. The 4-speed gearbox, paired with a chain final drive, allows for seamless transitions, making it suitable for both urban commuting and longer excursions.

Key Features and Technology

The 1948 Ariel 4G Square Four not only boasts impressive performance but also showcases advanced features for its time. The tubular single-loop frame lends a sporty aesthetic while ensuring rigidity and stability. Its suspension setup, featuring oil-damped telescopic forks at the front and a plunger-link spring system at the rear, offers a comfortable ride over varied terrain. The expanding drum brakes, with diameters of 203 mm in the front and 178 mm in the rear, provide adequate stopping power, balancing the bike's performance capabilities. With a fuel capacity of 23 liters (6.08 gallons), riders can embark on longer journeys with confidence. Optional sidecar compatibility further enhances its versatility, making the Squariel a great choice for those looking to share their rides.

Pros and Cons

Pros:

1. Unique Engine Design: The square four-cylinder engine offers a distinctive riding experience with smooth power delivery and a unique sound.
2. Versatile Performance: Ideal for both city rides and long-distance touring, making it a true all-rounder.
3. Historical Significance: A classic motorcycle with a rich legacy, appealing to collectors and enthusiasts alike.

Cons:

1. Weight Considerations: At 211 kg (465.2 lbs), the bike can feel hefty, especially for novice riders.
2. Drum Brakes: While adequate for the era, modern riders may find the drum brakes less responsive compared to contemporary disc systems.
3. Limited Spare Parts: As a vintage model, sourcing replacement parts can be challenging and may require special ordering or fabrication.

In summary, the 1948 Ariel 4G Square Four 1000 is a remarkable motorcycle that encapsulates the spirit of its time while still offering engaging performance and a unique riding experience. Whether you’re a seasoned enthusiast or a curious newcomer, the Squariel promises a journey steeped in history and excitement.