Voltage range 6-10 cells 2-3xLi-Poly RPM per Volt 1,080 RPM/V Max. Efficiency 81% Max. Efficiency Current 4-7 A (>74%) Max. loading 8 A / 60 s No load Current / 8V 0,35 A Internal resistance 260mohm Dimensions 27,7x26 mm Shaft Diameter 3,17 mm Weight 45 g Recommended model weight 200 - 500 g Propeller range 2xLi-Poly prop 10"x5" 3xLi-Poly prop 9"x4" 10 cells prop 8,5"x5"