Emax Cf2822 1200kv Brushless Motor W/prop Saver for Rc Airplane Multicopter(pack of 4 Pcs)
It is the very high power delivered by these small and very robust, but light weight (39g) brushless motors with rotating case suitable for all models of 300-400 size .the CF2822/CF2812 motors offer extremely high efficiency and high load capability for their weight. EMAX motors with the high  quality of manufacturing, reliability and performance are the best outrunners  available in the marketNo. Of cells2-3 Li-PolyRPM/V: 1200 RMP/VzMax. efficiency: 82%Max. efficiency current: 7 -16 A (>75%)No load current / 10 V: 0.9 ACurrent capacity: 16 A/60 sInternal Resistance: 150 mohmStator Dimensions: 22x10 mmShaft diameter: 3 mmWeight: 39 gPacking Content:4x EMAX CF2822 1200KV Brushless Motor w/ prop saver