| TECHNICAL SPECIFICATION |
|---|
| Model ID |
|---|
| Manufacturer (Make) | Hyosung |
| Model Name | SF50B Prima |
| Year | 2011 |
| Category(class) | Scooter |
| Engine |
|---|
| Engine Capacity (Displacement) | 49 ccm (2.99 cubic inches) |
| Engine Type | Single cylinder, two-stroke |
| Bore x Stroke | Ø41.0 mm x 37.4 mm (Ø1.61 inches x 1.47 inches) |
| Bore/Stroke Ratio | 1.1 |
| Compression Ratio | 7.2:1 |
| Fuel System(Carburetion) | Carburettor |
| Starter System | Electric |
| Cooling System | Air |
| Powertrain |
|---|
| Clutch | Centrifugal automatic clutch |
| Transmission (Final Drive) | Belt |
| Chassis/Suspension/Brakes |
|---|
| Front Suspension | Conventional Telescopic |
| Rear Suspension | Mono Shock Absorber (Preload adjustable) |
| Front Brakes | Single disc |
| Front Brakes Diameter | Ø162 mm (Ø6.38 inches) |
| Rear Brakes | Expanding brake (drum brake) |
| Front Tire | 110/70-12 |
| Rear Tire | 120/70-12 |
| Dimensions |
|---|
| Seat Height | 29 mm (1.14 inches) |
| Wheelbase | 51 mm (2.01 inches) |
| Ground Clearance | 6 mm (0.24 inches) |
| Dry Weight | 88.0 kg (194 lb) |
| Fuel Capacity | 4.73 litres (1.25 gallons) |
| Performance |
|---|
| Max Power | 5.00 HP (3.6 kW) |
| Max Torque | 3.80 Nm (2.79 ft*lbs) at 6500 RPM |
| Power/Weight Ratio | 0.05 Hp/Kg |
| Top Speed | - |
| Acceleration (dart, speedup) time | |
| 0-100 km/h | - |
| 0-60 mph | - |
| 1/4 mile | - |
| 60 to 140 km/h, highest gear | - |
