28.3. Helicopter parts selection

28.3.1. Do my servos need to be of identical type for eCCPM?

Yes. If you use different servo types for eCCPM, then the swashplate will not move evenly up and down with throttle movement. This will cause unwanted cyclic/collective pitch interaction and make hovering difficult.

28.3.2. How does the Castle Creations Phoenix ESC governor mode work?

The Phoenix series governor mode functions the same as standard governor mode, but the RPM is selected by a different method.

Here is the explanation of the Phoenix governor mode, directly from Patrick del Castillo, the designer of the Phoenix ESCs: