1,Performance 2,5HP/9000rpm (2.5HP/9000rpm) Idle Speed:1750 rpm/min Static Thrust 6Kg / 100 meters Altitude Static Thrust 5.3Kg / 1800 meters Altitude The specification of the aircraft propeller:14 X10;15 X 8;16 X 6;16 X 8;17 X 6 the type of the sparking plug:NGK CM6 2,Parameter Exhaust Amount : 20cm3 diameterxstroke:32mmx25mm Ratio of compression:10.5:1 Ratio of lubricating capacity:30:1 Weight:Main engine - 650g Exhaust pipe - 50g Ignition equipment - 120g