Specifications: KV………………………………………………………………………………………………….420 Configu-ration…………………………………………………………………………12N14P Shaft Diameter…………………………………………………………………………….6mm Motor Dimension(Dia.*Len)………………………………………..Φ60.7×39.5mm Weight(g)……………………………………………………………………………………..255g ldle current(10)@10v(A)………………………………………………………………..0.9A No.of Cells(Lipo)…………………………………………………………………………..3-8S Max Continuous current(A)180S…………………………………………………….40A Max Continuous Power(W)180S……………………………………………….1180W Max. efficiency current…………………………………………………….(10-21A)>83% internal resistance……………………………………………………………………….33mΩ Test Environment: Motor: U7 KV490 ESC:T-MOTOR T80A (We recommended the T80A ESC as the default combination with U7 @ 6S.) Prop: T-MOTOR 17*5.8CF/18*6.1CF Power: 22.2V constant voltage power supply