Choosing a brushless motor can be intimidating, but understanding a few specific characteristics you can easily find the perfect motor. Motors with higher winds spin slower and they have a lower Kv (RPM/V). They spin a larger propeller at slower speeds and at a lower current. Motors with lower winds have a higher Kv (RPM/V). They spin a smaller propeller at higher speeds and at a higher current than high turn motors.
To determine the motor, decide on your flying style and aircraft. Is it a sport fast flyer, or a slow plane with a lot of drag? For the high speed airplane a low turn
high KV that spins a small prop fast would be the right choice. For the slow, high drag plane, a high turn motor
(low KV)that can spin a much larger prop and produce a lot of thrust at low speed is what you want.
A very loose comparison is RPM = KV
Low KV = slow RPM, large prop, low AMP (current)
High KV = fast RPM, small prop, high AMP (current)
Below is a motor chart that will assist in choosing a brushless motor based on aircraft weight. However, choosing a motor is dependent on aircraft type, battery and flying style. Below is a chart that will guide you in your choice. When choosing a motor, the battery, electronic speed controller
ESC must be able to handle the current. Clicking on any motor will provide more specific motor information.
