Performance: 4.1HP/7500rpm Idle Speed: 1500 rmp/min Static Thrust: 25.5kg/100 meters Altitude Static Thrust: 22.3kg/1800 meters Altitude Recommended Propeller: 27x10 26x12 28x12 28x10 Spark Plug Type: NGK CM6 Displacement: 111.2cm³ Diameter × Stroke: 45mm×35mm Compression Ratio: 7.6：1 Lubrication Ratio: 30:1 Weight of Main Engine: 2370g Weight of Exhaust: 280g Weight of Ignition: 190g Ignition voltage: 4.8V-8.4V