Redolent As for motors: 1.3650 means the motor diameter is 36mm,length is 50mm.3665 means the motor diameter is 36mm,length is 65mm 2.The shaft diameter can see the picture and details. 3.If the motor shaft di... As for motors: 1.3650 means the motor diameter is 36mm,length is 50mm.3665 means the motor diameter is 36mm,length is 65mm 2.The shaft diameter can see the picture and details. 3.If the motor shaft diameter,voltage,current is the same with your old motor,the motor can use with your car. 4.The KV number is more higher,means this motor is better for crawler rc car,the drift rc car or high speed rc car should use the lower KV motor. You need to measure your motor and buy a new one. Просмотреть более