nig_smith
Second Officer
United Kingdom
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The ESC is the Electronic Speed Controller. This device takes the DC Voltage from the battery and converts it into three separate AC Voltages which are needed to turn the motor. These three voltages have separate phase values, separated by 120 Degrees, which when fed to the motor create a 360 degree rotation, or one complete revolution.
If one of the three outputs of the ESC fail, or one of the three windings inside the motor fail, then only two voltages will turn the motor causing it to jerk back and forth. The most common reason for this type of failure is if you have been using prop guards, taken them off, but used the same longer screws. These screws, because they are longer will screw into the motor housing and damage the internal windings causing a short which may also damage the ESC.
The Circlip is a small "C" shaped clip that fits around the shaft on the bottom of the motor to allow rotation without the motor completely separating.
Regards
Nidge |
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