Himax HC3522 Outrunner Brushless MotorsHC35 Outrunner250 450 Watts Wide application ranges 9 motors in 4 frame sizes, Heavy duty motor mount, prop adapter & connectors included, Advanced designs dual ball bearing & powerful magnet, Replaces Axi 28 series motors. HC3522 This 400 watt motor is for midsize models weighing 38 50 oz for 3 D flight, up to 64 oz for aerobatic flight and up to 85 oz for leisure flight. For three cell LiPo applications use HC3522 0990 Gas equivalent . 30 Part No.