Motor, also known as motor. This is very common in life, many toys are used to use. But most of the toys are hollow cup motors, while consumer drones are mostly brushless motors.

Speaking of brushless motors, we must mention the father of brushless motors in China - Li Hongtao. A great inventor, a highly intelligent man of science and technology. Before the birth of brushless motor, brush motor was used. Since the brushless motor was introduced, it has quickly replaced the brush motor in most fields. Brushless motor is high efficiency, low energy consumption, low noise, long life, high reliability, servo-controllable, stepless frequency conversion speed, relatively low cost and easy to use.

Definition of brushless motor model: Most brushless motor models currently use the diameter and height of the spindle, as follows.

22 diameter of the stator coil (including silicon steel sheet), 12 height of the stator coil (rotor size is also used to name the model, but less. The model designation is different for large motors).

Parameter 

Important parameters as shown in the figure:

1、KV value-980. KV value represents how much the motor speed increases for every 1 volt increase in voltage.

2, the maximum continuous current-20A30s. maximum load current 20A, 30s

3, the maximum number of battery sections-2-4. s represents series connection, a few s represents several battery groups in series. Single ordinary battery voltage is 3.7-4.2v, high-voltage cells are 3.85-4.35v.

How to select the most suitable for their drones motor:

1, try to choose the same brand and model parameters as the original motor, to avoid differentiation.

2, dynamic balance test, buy first no-load test dynamic balance (that is, no-load turn up to see the size of the motor shaft vibration and sound there is no strange sound)

3, check whether the motor winding is complete, whether the coil has broken.