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Ariel 4G Square Four 1000
1944Allround

Ariel 4G Square Four 1000

Key specifications

Engine
995 cc
Power
35 HP
Fuel type
petrol
Fuel capacity
6.1 L
Transmission
4-speed
Front brakes
Expanding brake (drum brake)
Rear brakes
Expanding brake (drum brake)

Overview

### Discover the 1944 Ariel 4G Square Four 1000: A Classic Blend of Innovation and Elegance The 1944 Ariel 4G Square Four 1000 stands as a testament to the artistry and engineering prowess of mid-20th century motorcycle design. This all-rounder, affectionately dubbed the "Squariel," was a game-changer in the motorcycle market, perfectly positioned for enthusiasts seeking a balance between performance and style during a time when the world was emerging from the shadows of war. Designed by the illustrious Edward Turner, the 4G Square Four showcased an innovative square four-cylinder engine layout that set it apart from its contemporaries, combining aesthetic appeal with unmatched engineering. At the heart of the 4G Square Four lies its unique engine configuration, a 995 cc square four-cylinder powerhouse that delivers a commendable 35 horsepower at 5,500 RPM. This configuration not only enhances the bike's smoothness but also contributes to a top speed of 87 mph (140 km/h), allowing riders to experience exhilarating acceleration and agility on the open road. With a compression ratio of 6.0:1 and its air-cooled, SU MC2 carburettor fuel system, the 4G Square Four offers a spirited ride, characterized by its linear power delivery and a delightful soundtrack from its dual-valve per cylinder setup. Whether navigating city streets or stretching out on long country roads, this motorcycle is designed to deliver a responsive and engaging riding experience. In addition to its remarkable engine, the 1944 Ariel 4G Square Four boasts several key features that enhance both performance and rider comfort. It is equipped with a tubular single-loop frame that provides stability and strength, complemented by a telescopic front fork and plunger-link rear suspension that smoothens any bumps in the road. The bike's drum brakes—203mm in the front and 178mm in the rear—offer reliable stopping power, ensuring that the rider maintains control even at higher speeds. With a weight of 211 kg (465.2 lbs) and a fuel capacity of 23 liters (6.08 gallons), the 4G Square Four is built for those who appreciate the freedom of the ride, making it an ideal companion for long-distance touring. ####

Pros

    Cons

    • Unique Engine Configuration: The square four-cylinder engine not only looks impressive but also delivers smooth power and torque, enhancing the overall riding experience.
    • Comfortable Suspension: The combination of a telescopic front fork and plunger-link rear suspension provides a comfortable ride, making it suitable for both urban commuting and long-distance travel.
    • Classic Aesthetics: With its distinctive design and elegant color options, the 4G Square Four is a head-turner, appealing to vintage motorcycle enthusiasts and collectors alike.
    • Weight: At 211 kg (465.2 lbs), the bike may feel heavy for some riders, particularly during low-speed maneuvers or when stopping.
    • Braking Performance: While the drum brakes are effective, they may not provide the same level of braking power and responsiveness as modern disc brake systems.
    • Kick Start Only: The traditional kick-start mechanism may be less convenient compared to electric start systems found on contemporary motorcycles, potentially deterring some riders.

    Technical details

    Source specification data

    Make
    Ariel
    Model
    4G Square Four 1000
    Category
    Allround
    Starter
    Kick
    Comments
    Also
    called ´
    Squariel
    ´.
    Designed
    by
    Edward Turner
    .
    Ariel Motorcycles
    was acquired by the
    A Group
    in 1944.
    Color Options
    Red/silver
    Power
    35.00 HP (25.5 kW)) @ 5500 RPM
    Gearbox
    4-speed
    Top Speed
    140.0 km/h (87.0 mph)
    Engine Type
    Double twin cylinder arranged as a square
    Fuel System
    Carburettor. SU MC2 carburettor
    Bore X Stroke
    65.0 x 78.0 mm (2.6 x 3.1 inches)
    Compression
    6.0:1
    Displacement
    995.00 ccm (60.71 cubic inches)
    Cooling System
    Air
    Engine Details
    Square four cylinder
    Exhaust System
    Dual two-into-one
    Valves Per Cylinder
    2
    Transmission Type Final Drive
    Chain
    Fuel Capacity
    23.00 litres (6.08 gallons)
    Overall Length
    2,083 mm (82.0 inches)
    Weight Incl Oil Gas Etc
    211.0 kg (465.2 pounds)
    Seat
    Solo seat with springs
    Wheels
    Wire spoked. Red and silver rims.
    Rear Tyre
    4.00-18
    Frame Type
    Tubular single loop
    Front Tyre
    3.25-19
    Rear Brakes
    Expanding brake (drum brake)
    Front Brakes
    Expanding brake (drum brake)
    Rear Suspension
    Plunger-link spring
    Front Suspension
    Telescopic fork
    Rear Brakes Diameter
    178 mm (7.0 inches)
    Front Brakes Diameter
    203 mm (8.0 inches)

    Available colors

    Red/silver