- Source: Yamaha Libero (G5)
Yamaha Libero G5 is a 106 cc, single-cylinder four-stroke motorcycle manufactured by India Yamaha Motor. Its predecessor was known as just Yamaha Libero. Unlike Libero G5, Libero had tachometer and round headlights but lacked fuel gauge. However, Libero G5 came with a sporty headlight and fuel gauge, but lacked the tachometer. A new set of air scoops with a honeycomb grille do dual duty; directing airflow over the engine block and also neatly covering the gap between the engine and the fuel tank. The Libero G5's frame continues to be the tubular dual-cradle type.
Yamaha has introduced a compulsive pressure wet sump lubrication system in the 106 cc engine of the Libero G5. This new system works on a constant pressure build-up that is generated by the engine itself thus enables the engine oil or lubricant to flow evenly over all the engine components, unlike conventional lubrication that works more on gravitational forces thus may not perform as effectively.
Yamaha Libero G5 was, particularly, made for Indian market. However, in Bangladesh, Yamaha Libero G5 was also popular. Ground clearance is comfortable 173 mm, enabling the bike to take on speed-breakers and potholes with greater confidence.
Yamaha released an upgraded Libero G5 model with alloy wheels and electric starter in 2007. Like most Indian motorcycles, this bike came with a saree guard to increase the safety of female pillion riders. A less sporty-looking version (with same engine) of this bike is marketed as Yamaha Alba. A bigger cousin of this bike with 125 cc engine is Yamaha Gladiator. Some similar/competitor bikes are Hero Honda Splendor, Bajaj Platina, Bajaj CT 100. India Yamaha Motor stopped manufacturing Yamaha Libero G5 in the year 2010.
Technical specification
Technical specifications below as reported by the manufacturer.
Engine type: Air-cooled, 4-stroke, SOHC, 2-valve
Cylinder arrangement: Single-cylinder
Bore x stroke: 49.0 x 56.0 mm
Compression ratio: 9.0:1
Starting system: Kick start/Self starter (from 2008 models)
Lubrication: Compulsive pressure wet sump
Carburettor: Variable venturi type
Ignition system: Capacitor discharge ignition (advanced micro processor), Magneto dependent
Battery type: 12 V, 2.5 A·h
Clutch type: Wet multiple-disc
Transmission type: Four steps of regular engagement formula advance. 1 down, 3 up; toe-heel shifter
Gear ratios: 1st=3.000, 2nd＝1.688, 3rd:=1.200, 4th=0.875
Primary / Secondary reduction ratio 3.722 / 3.214
Frame type: Double cradle type
Caster angle (degree): 26.4°
Suspension type: (front/rear) Telescopic/swing arm
Headlight: 12 V 35/35 W halogen bulb (HS1)
Top speed: +/-87 km/h (54 mi/h) (with 80 kg payload)
Fuel efficiency: +/- 100 km/2 liters of gasoline
