Himax HC3510 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. HC3510 This 250 watt motor is for midsize models weighing 24 32 oz for 3 D flight, up to 40 oz for aerobatic flight and up to 50 oz for leisure flight. For three cell LiPo applications use HC3510 1100 Gas equivalent . 15 Part No.