Does brushless motor size matter?
Brushless motors come in all shapes and sizes. The general rule of thumb is to aim for 2:1 thrust to weight ratio. You aren’t going to be able to do hard core racing with it. The higher the better obviously.
What does the KV Number mean on a brushless motor?
The Kv rating of a brushless motor is the ratio of the motor’s unloaded rpm to the peak voltage on the wires connected to the coils. A low Kv motor has more winds of thinner wire—it will carry more volts at fewer amps, produce higher torque, and swing a bigger prop.
Can you over Volt a brushless motor?
A brushless motor requires an electronic controller. The effect on the motor in that case is as much determined by the controller design as it is by the motor itself. With no load connected to the motor, will probably be ok at twice the rated voltage and twice the rated speed.
What does KV mean in motors?
Kv describes the RPM (revolutions per minute) a motor does per Volt that is put into it. Generally speaking the more Kv a motor has, the more RPM and more power. For example, a 9000Kv motor would be faster than a 2200Kv motor. If Kv is like horsepower, then Turns is the physical attribute of a motor.
Is higher or lower Kv better?
Generally speaking the more Kv a motor has, the more RPM and more power. For example, a 9000Kv motor would be faster than a 2200Kv motor. A higher turn number means more wire and thus more resistance, resulting in a slower motor. So turns with a lower number means a faster motor.
What kills a brushless motor?
Conclusion – What Kills a Brushless Motor The cost is heat. Too much heat in your motor will lead to failure of the motor windings. Don’t let the magic smoke out of your motor, otherwise your motor is toast!
What causes a brushless motor to fail?
In brushless motors will fail once the bearing has been worn out due to the previously discussed factors, but in addition; residual unbalancing and bearing load have an impact on bearing the life. DC motors can be overrun, but not for long periods of time.