Ariel 4G Square Four 1000 1949 - Specifications & Review

4G Square Four 1000

Article Complete Info

Articleid131920
CategoryAllround
MakeAriel
Model4G Square Four 1000
Year1949

Chassis, Suspension, Brakes & Wheels

FrametypeTubular single loop
FrontbrakesExpanding brake (drum brake)
Frontbrakesdiameter203 mm (8.0 inches)
FrontsuspensionOil damped telescopic
Fronttyre3.25-19
RearbrakesExpanding brake (drum brake)
Rearbrakesdiameter178 mm (7.0 inches)
RearsuspensionPlunger-link spring
Reartyre4.00-18
SeatSolo seat
WheelsWire spoked.

Engine & Transmission

Borexstroke65.0 x 78.0 mm (2.6 x 3.1 inches)
Compression6.0:1
CoolingsystemAir
Displacement995.00 ccm (60.71 cubic inches)
EnginedetailsSquare four cylinder
EnginetypeDouble twin cylinder arranged as a square
ExhaustsystemDual two-into-one
FuelsystemCarburettor. SU MC2 carburettor
Gearbox4-speed
Power35.00 HP (25.5 kW)) @ 5500 RPM
Topspeed140.0 km/h (87.0 mph)
TransmissiontypefinaldriveChain
Valvespercylinder2

Other Specifications

ColoroptionsRed/silver
CommentsAlso called ´Squariel´. Designed by Edward Turner. The Ariel Square Four Mark I replaced this model in 1949.
StarterKick

Physical Measures & Capacities

Fuelcapacity23.00 litres (6.08 gallons)
Overalllength2,083 mm (82.0 inches)
Weightincloilgasetc211.0 kg (465.2 pounds)

About Ariel 4G Square Four 1000 1949

Introducing the 1949 Ariel 4G Square Four 1000: A Classic Legend Reborn

The 1949 Ariel 4G Square Four 1000 stands as a testament to the ingenuity of mid-20th century motorcycle engineering. Positioned as an all-rounder, this bike is not just a mode of transportation; it’s a piece of history, crafted by the renowned Edward Turner. Often affectionately referred to as the "Squariel," this motorcycle was designed to appeal to discerning riders who sought a blend of performance, style, and reliability. With its striking red and silver color options, the 4G Square Four makes a bold statement on the road, attracting enthusiasts and collectors alike.

At the heart of the 4G Square Four is its distinctive square four-cylinder engine, boasting a displacement of 995cc. This unique configuration, coupled with a compression ratio of 6.0:1, produces a respectable 35 HP at 5500 RPM, delivering a top speed of 140 km/h (87 mph). The air-cooled engine is fed by an SU MC2 carburettor, ensuring a smooth throttle response that enhances the riding experience. The 4-speed gearbox, combined with a chain final drive, provides riders with seamless gear transitions, allowing for a responsive ride whether cruising on the highway or navigating through city streets. The bike's weight of 211 kg (465.2 lbs) gives it a solid, planted feel, offering stability and confidence for riders.

The Ariel 4G Square Four is not just about power; it incorporates advanced technology for its time. The tubular single-loop frame provides a strong foundation, while the oil-damped telescopic front suspension and plunger-link rear suspension ensure a comfortable ride over various terrains. The drum brakes, although conventional, are effective with a front diameter of 203 mm and rear diameter of 178 mm, providing reliable stopping power when needed. With a fuel capacity of 23 liters (6.08 gallons), this motorcycle is equipped for longer journeys, allowing riders to explore the open road without frequent stops.

Pros and Cons of the 1949 Ariel 4G Square Four 1000

Pros:

  1. Unique Engine Design: The square four-cylinder engine offers a distinctive character and smooth power delivery, setting it apart from traditional V-twins and parallel twins.
  2. Classic Styling: With its timeless design and available color options, the 4G Square Four is a head-turner that appeals to vintage motorcycle enthusiasts.
  3. Comfortable Ride: The effective suspension system and solid weight distribution provide a comfortable and stable ride, even on longer journeys.

Cons:

  1. Weight: At 211 kg, the motorcycle may feel cumbersome to some riders, especially in tight maneuvers or low-speed situations.
  2. Drum Brakes: While effective, the drum brakes may not provide the same stopping performance as modern disc brakes, which could be a drawback for safety-conscious riders.
  3. Limited Top Speed: Though impressive for its era, the maximum speed of 140 km/h may not satisfy those seeking high-performance thrills in today’s fast-paced riding environment.

In summary, the 1949 Ariel 4G Square Four 1000 is a remarkable blend of classic design and innovative engineering that has stood the test of time. For enthusiasts and collectors, it offers a nostalgic journey into the golden age of motorcycling, promising an experience that is both exhilarating and steeped in history.

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