Positioned in Cushman's scooter motorcycle lineup, the 1957 Cushman Eagle relies on a 318 cc (19.4 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 8 HP (5.8 kW), transferring power to the rear wheel through a 2-speed gearbox and chain final drive. With a specific output of 25.2 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
Within MotoLibrary's Cushman archive, this model family spans 16 indexed model years from 1950 to 1965, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
25.2 HP/L
Engine
Displacement318.0 ccm (19.40 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsCushman Husky engine
Power8.0 HP (5.8 kW))
Fuel SystemCarburettor
CoolingAir
Transmission
Gearbox2-speed
Final DriveChain (final drive)
ClutchCentrifugal clutch
DrivelineBelt primary
Performance
Top Speed84.0 km/h (52.2 mph)
Fuel Consumption3.14 litres/100 km (31.8 km/l or 74.91 mpg)
Greenhouse Gases72.8 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame TypeSteel tube
Wheels & Brakes
Front BrakesExpanding brake (drum brake)
Rear BrakesExpanding brake (drum brake)
Wheels10 inch wheels
Other
StarterKick
Carrying CapacityLarge rear rack
Buying Checklist
Before You Compare This Bike
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.
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.
