Positioned in Batavus's allround motorcycle lineup, the 1975 Batavus HS-50 relies on a 48 cc (2.9 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 2.4 HP (1.8 kW) at 5,000 rpm, transferring power to the rear wheel through a automatic gearbox. Internal engine geometry specifies a bore and stroke of 40.0 x 38.0 mm (1.6 x 1.5 inches) with a 7.0:1 compression ratio.
On the scales, the HS-50 measures 40.8 kg (90 lbs) dry. Rider ergonomics and chassis geometry center around a 711 mm (28 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops. The 5-liter (1.3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 56 km/h (35 mph).
Standover Height
711 mm (28 in)
Engine
Displacement48.0 ccm (2.93 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsLaura Engine
Power2.4 HP (1.8 kW)) @ 5000 RPM
Compression7.0:1
Bore x Stroke40.0 x 38.0 mm (1.6 x 1.5 inches)
Fuel SystemCarburettor. Encarwi S22
Ignitionmagneto
CoolingAir
Transmission
GearboxAutomatic
ClutchAutomatic dry centrifugal
Performance
Top Speed56.3 km/h (35.0 mph)
Chassis
Front SuspensionTelescopic forks with internal springs
Rear SuspensionPivoting fork
Wheels & Brakes
Front Tyre2.00-16
Rear Tyre2.00-16
Front BrakesExpanding brake (drum brake)
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight40.8 kg (90.0 pounds)
Power/Weight0.0588 HP/kg
Seat Height711 mm (28.0 inches) If adjustable, lowest setting.
Overall Length1626 mm (64.0 inches)
Overall Width965 mm (38.0 inches)
Fuel Capacity5.00 litres (1.32 US gallons)
Other
StarterKick
Color OptionsRed
Electrical6V
Notes
British moped made 1975-1979.
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.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
