I'm trying to decide what to do. I've got the Hacker A20-50S motor and the Hacker X-7 ESC. The specs for the X-7 say it's good for 2-3 servos, but I've got this plane setup for 4 servos (one for each aileron). If I upgrade to the X-20 ESC, which can handle 3-4 servos, how will that affect my motor?

Is the motor pulling current from ESC, or is the ESC pushing current at the motor? How is the ESC controlling the motor, by setting RPM, or by pushing current?

Nathan