The Jinlang 1P39QMB-B is a 0.05 l (49.6 cc, 3.03 cu-in) single cylinder, 4-stroke, forced air-cooled internal combustion motorcycle engine, manufactured by Zhejiang Jinlang Power Co. LTD.
A 39 mm (1.54 in) cylinder bore and 41.5 mm (1.63 in) piston stroke give the motor a total of 49.6 cc (3.03 cu-in) of displacement, compression ratio rating is 10.5:1. The 1P39QMB-B produced 3.0 PS (2.2 kW; 3.0 HP) at 7,500 rpm of maximum horsepower and 2.8 Nm (0.3 kg·m; 2.1 ft·lb) at 6,000 rpm of torque. Minimum idling speed is 2,000 rpm.
Four-stroke, single cylinder
49.6 ml (3.03 cu-in)
3.0 PS (2.2 KW; 3.0 HP) at 7,500 rpm
Max. torque (crank PTO)
2.8 Nm (0.3 kg·m; 2.1 ft·lb) at 6,000 rpm
Capacitance discharge ignition (CDI)
Electric / kick
Unleaded gasoline (octane number 86 or higher)
Dimensions and Weight
Length, mm (in)
Width, mm (in)
Height, mm (in)
Dry weight, kg (lb)
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