DLE-40 Single Cylinder Two Stroke Side Exhaust Gas Engine for High-Performance Large-Scale RC Aircraft Condition: New Note: This 100% part is non-returnable and non-exchangeable. Please verify the correct part number before purchasing, instead of solely relying on the model.Specification:Performance: 4.8HP/8500 rpm Idle Speed: 1500?rmp/min Static Thrust: 9.5 kg/100 meters Altitude Static Thrust: 8.5 kg/1800 meters Altitude Recommended Propeller: 19 x8, 19 x10, 20 x8, 20 x10 Spark Plug Type: NGK CM6 Displacement: 40 cm3 Diameter 髑?Stroke: 32 mm髑?5 mm Compression Ratio: 10.5:1 Lubrication Ratio: 30:1 Weight of Main Engine: 1170 g Weight of Exhaust: 110 g Weight of Ignition: 170 g Ignition voltage: 4.8V-8.4VA pplications:Fit For High-Performance Large-Scale RC Aircraft