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MotoLibrary Score
34/100Commuter
Power/Weight
0.16 hp/kg
Top Speed
60 km/h
Torque
5 Nm
Engine
49 ccm
Technical Overview
2008 Keeway Cooper 50 Technical Analysis & Specification Breakdown
At the heart of the 2008 Keeway Cooper 50 cross - motocross motorcycle, Keeway relies on a 49.1 cc (3 cu in) liquid-cooled single cylinder, two-stroke powerplant. In factory specification, peak output is rated at 7 HP (5.1 kW) at 12,000 rpm while maximum torque reaches 5 Nm (3.7 lb-ft) at 10,000 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. Internal engine geometry specifies a bore and stroke of 39.5 x 0.0 mm (1.6 x inches).
On the scales, the Cooper 50 measures 45 kg (99 lbs) dry, translating to a power-to-weight ratio of 0.16 HP/kg (6.43 kg per horsepower). Rider ergonomics and chassis geometry center around a 980 mm (38.6 in) wheelbase engineered for quick, flickable steering geometry. The 3.2-liter (0.8 US gal) fuel tank paired with a rated consumption of 5 L/100 km provides an estimated theoretical range of roughly 64 km (40 miles) between fill-ups, while factory top speed is listed at 60 km/h (37 mph).
Power-to-Weight
0.16 HP/kg (6.43 kg/HP)
Power Band Window
10,000–12,000 rpm
Theoretical Range
~64 km (40 mi)
Engine
Displacement49.1 ccm (3.00 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power7.0 HP (5.1 kW)) @ 12000 RPM
Torque5.0 Nm (0.5 kgf-m or 3.7 ft.lbs) @ 10000 RPM
Bore x Stroke39.5 x 0.0 mm (1.6 x inches)
Fuel SystemCarburettor
Fuel ControlOverhead Cams (OHC)
IgnitionCDI
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
ClutchCentrifugal
Performance
Top Speed60.0 km/h (37.3 mph)
Fuel Consumption5.00 litres/100 km (20.0 km/l or 47.04 mpg)
Greenhouse Gases116.0 CO2 g/km. (CO2 - Carbon dioxide emission)
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
