An Electronic Speed Controller (ESC) is a device that regulates the power of an electric motor, allowing it to throttle from 0% to 100%. There are two styles of Electronic Speed Controller, Brushed and Brushless. Both work on the same principle. An ESC is made up of three key components. A BEC/voltage regulator, a Processer and the switching consisting of FETs (field effect transistor). Now let's get a little technical. The BEC/voltage regulator is a division of the ESC that will send a set amount of power (typically 5v 1Ah) back to your receiver to then power your servos. This also has a secondary function whereby if the battery that is driving the motor reaches its minimum voltage the BEC (Battery Eliminator Circuit) will reserve power for the flight critical controls, making sure the motor doesn't take all the power from the battery. The process...

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