Hyosung SF
Hyosung SF | |
Manufacturer | |
---|---|
Also called | SF50, SF 50, SF50 Racing, SF 50 Racing, SF50 Rally, SF 50 Rally, SF 50R Rally, SF50B, SF 50B, SF50B Prima, SF50R Rally |
Production | 2005 - 2011 |
Class | Scooter |
Engine | single cylinder, two-stroke |
Bore / Stroke | 41.0mm x 37.4mm |
Compression ratio | 7.2:1 |
Top Speed | 28 mph (45 km/h) |
Horsepower | 4.83 HP (3.6 KW) @ 7000RPM |
Torque | 2.8 ft/lbs (3.8 Nm) @ 6500RPM |
Fuel System | carburetor |
Ignition | electronic |
Transmission | Gear box: automatic Final Drive: belt |
Suspension | Front: conventional telescopic Rear: mono shock absorber (preload adjustable) |
Brakes | Front: single disc Rear: expanding brake (drum brake) |
Front Tire | 110/70-12 |
Rear Tire | 120/70-12 |
Wheelbase | 2.01 inches (51 mm) |
Length | 72.4 inches (1839 mm) |
Width | 25.0 inches (635 mm) |
Height | 46.69 inches (1186 mm) |
Seat Height | 29.02 inches (737 mm) |
Weight | 194.01 pounds (88.0 Kg) (dry), 88.0 kg (wet) |
Fuel Capacity | 1.25 Gallon (4.73 Liters) |
Manuals | Service Manual |
The Hyosung SF50B Prima was a single cylinder, two-stroke scooter produced by Hyosung between 2005 and 2011. It could reach a top speed of 28 mph (45 km/h). Max torque was 2.8 ft/lbs (3.8 Nm) @ 6500 RPM. Claimed horsepower was 4.83 HP (3.6 KW) @ 7000 RPM.
Engine[edit | edit source]
The engine was a air cooled single cylinder, two-stroke. A 41.0mm bore x 37.4mm stroke result in a displacement of just 49.0 cubic centimeters. Fuel was supplied via a overhead cams (ohc).
Drive[edit | edit source]
The bike has a automatic transmission. Power was moderated via the centrifugal automatic clutch.
Chassis[edit | edit source]
It came with a 110/70-12 front tire and a 120/70-12 rear tire. Stopping was achieved via single disc in the front and a expanding brake (drum brake) in the rear. The front suspension was a conventional telescopic while the rear was equipped with a mono shock absorber (preload adjustable). The SF50B Prima was fitted with a 1.25 Gallon (4.73 Liters) fuel tank. The bike weighed just 194.01 pounds (88.0 Kg). The wheelbase was 2.01 inches (51 mm) long.
2010 Hyosung SF50R Rally[edit | edit source]
The 2010 MY Hyosung SF50R Rally has, at its heart, an air-cooled, two-stroke, 49cc, single cylinder lump paired to a continuously variable transmission, that can produce 5 horsepower and 4 Nm of torque. Unlike its SF50B sibling, this machine has a more youthful, race-inspired visual appearance, with race decals and bold colors, and is sure to fit the taste of the more adventurous and young among riders. It comes standard with a dual seat, passenger grab rails, a front disc brake, and an under-storage compartment.
2010 Hyosung SF50B[edit | edit source]
The 2010 MY Hyosung SF50B sports an air-cooled, two-stroke, 49cc, single cylinder powerhouse mated to a continuously variable transmission (CVT) and can produce 5 horsepower and 4 Nm of torque. Standard features include passenger pegs, a dual seat, a large under-seat storage compartment, a free flowing exhaust system, a modern instrumentation panel, and lightweight, cast-aluminum wheels.
2011 Hyosung SF50B[edit | edit source]
The 2011 MY Hyosung SF50B sports an air-cooled, two-stroke, 49cc, single cylinder lump paired to a continuously variable transmission, and can produce 5 horsepower and 4 Nm of torque. This agile scooter is suitable for one's daily commute inside the concrete jungle, being easy-to-park, fuel-efficient and capable of tackling narrow alleyways. It comes standard with passenger pegs, a two-up seat, passenger grab rails, an under-seat storage compartment and 12" wheels.