1949 Ariel MK1 Square Four

1949 Ariel MK1 Square Four Specifications

  • Updated: 2023-03-20

General information

ModelAriel MK1 Square Four

Engine and transmission

Displacement997.0 ccm (60.84 cubic inches)
Engine typeSingle cylinder, four-stroke
Power40.0 HP (29.2 kW) @ 5800 RPM
Fuel systemCarburettor
Fuel controlOverhead Valves (OHV)
Cooling systemAir
Transmission typeChain (final drive)

Chassis, suspension, brakes and wheels

Frame typeTubular single loop
Front tire3.25-19
Rear tire4-18
Front brakesExpanding brake (drum brake)
Diameter178 mm (7.0 inches)
Rear brakesExpanding brake (drum brake)
Diameter203 mm (8.0 inches)
Dry weight193.0 kg (425.5 pounds)
Power/weight ratio0.2073 HP/kg
Overall length2100 mm (82.7 inches)
Wheelbase1422 mm (56.0 inches)
Fuel capacity23.00 litres (6.08 US gallons)
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