Himax HB3615 Inrunner Brushless MotorsHB3615 Brushless300 Watts High performance replacement for 500 600 type can motor, can be used as direct drive or with gearbox, Direct replacement for Mega 22 20 and Aveox 36 15 type brushless motors,HB3615 These 300 watt motors are for mid size models weighing 28 38 oz for 3 D flight, up to 48 oz for aerobatic flight and up to 60 oz for leisure flight. Gas equivalent . 15 . 25 Part No. Dia mm Length mm Weight g Shaft Dia Prop Size* ESC Rating Kv Rm