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MotoLibrary Score
31/100Commuter
Power/Weight
0.04 hp/kg
Top Speed
45 km/h
Torque
5 Nm
Engine
49 ccm
Technical Overview
2011 Keeway F-Act Evo 50 Technical Analysis & Specification Breakdown
Engineered by Keeway for the scooter motorcycle segment, the 2011 Keeway F-Act Evo 50 pairs a 49.3 cc (3 cu in) single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 3.5 HP (2.6 kW) at 5,500 rpm while maximum torque reaches 4.6 Nm (3.4 lb-ft) at 5,200 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. Internal engine geometry specifies a bore and stroke of 40.0 x 39.2 mm (1.6 x 1.5 inches) with a 6.9:1 compression ratio.
On the scales, the F-Act Evo 50 measures 95 kg (209 lbs) dry. Rider ergonomics and chassis geometry center around a 1,290 mm (50.8 in) wheelbase engineered for quick, flickable steering geometry. The 5.6-liter (1.5 US gal) fuel tank paired with a rated consumption of 2.1 L/100 km provides an estimated theoretical range of roughly 267 km (166 miles) between fill-ups, while factory top speed is listed at 45 km/h (28 mph).
Power Band Window
5,200–5,500 rpm
Theoretical Range
~267 km (166 mi)
Engine
Displacement49.3 ccm (3.01 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power3.5 HP (2.6 kW)) @ 5500 RPM
Torque4.6 Nm (0.5 kgf-m or 3.4 ft.lbs) @ 5200 RPM
Compression6.9:1
Bore x Stroke40.0 x 39.2 mm (1.6 x 1.5 inches)
Valves/Cylinder0
Fuel SystemCarburettor
Fuel ControlReed valve / power valve
IgnitionC.D.I.
LubricationSeparate lubrication with automatic oil injection pump
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
ClutchAutomatic
DrivelineV-belt automatic transmission (CVT)
Performance
Top Speed45.0 km/h (28.0 mph)
Fuel Consumption2.10 litres/100 km (47.6 km/l or 112.01 mpg)
Greenhouse Gases48.7 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Wheelbase1290 mm (50.8 inches)
Ground Clearance130 mm (5.1 inches)
Wheels & Brakes
Front Tyre120/70-12
Rear Tyre130/70-12
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
WheelsAluminium alloy rims
Dimensions & Weight
Dry Weight95.0 kg (209.4 pounds)
Power/Weight0.0372 HP/kg
Overall Height1198 mm (47.2 inches)
Overall Length1860 mm (73.2 inches)
Overall Width680 mm (26.8 inches)
Fuel Capacity5.60 litres (1.48 US gallons)
Oil Capacity1.20 litres (1.27 US quarts) 2T oil tank
Service & Fluids
Engine Oil2-stroke synthetic motorcycle oil (API TC / JASO FC/FD)
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.
