Great Planes Rimfire 400 28-30-950 Outruner Brushless Motor Just as Ammo motors have revolutionized brushless inrunner technology, RimFire motors have done the same for outrunners! The combination of superior performance and a competitive price makes these power plants a great value. Plus, the wide selection means there"s a RimFire motor that"s ideal for whatever the application, including brushed-to-brushless upgrades as well as glow-to-electric conversions. Equip your airplane with a RimFire, and watch it reach new heights!2-Year Quality GuaranteeEngineered for explosive acceleration and maximum torque.The lightened aluminum motor can houses high-torque, "rare-earth" Neodymium magnets.Better cooling means 50% more power than many others outrunners of similar size.Dependable and virtually maintenance-free; no comms or brushes to worry about, and bearings are double-shielded.All include hardware, gold-plated bullet connectors (male connectors are installed; female connectors are included) and a motor mount. SpecificationsMotor Diameter: 1.1" (28mm)Motor Length: .87" (30mm)Shaft Diameter: 3mmShaft Length: .47" (12mm)kV Rating: 950 rpm/VWeight: 1.91oz (54g)Input Voltage: 7.4-11.1V (2-3S LiPo)Max. Constant Current: 14AMax Surge Current: 20AMax Constant Watts: 155WBurst Watts: 220No Load Current: .7ASuggested Prop Sizes: 8x6 - 10x4 slow fly