1) Q: What is an Electronic Speed Control?
A: A unit that translates receiver data into electrical form a motor can use. For example, the ESC
receives input signal from a receiver (or a flight controller) and the ESC provides appropriate
level of electric power( voltage) to the motor. Depending on the motor/propeller/battery/weight
combo, the Maximum Amp draw for ESC must be considered.
2) Q: What do I do in the event of an ESC failing?
A: ESC failure can be caused by a number of reasons, the main ones being “over-current draw,”
“over-voltage input,” and/or “over-heating failure.”
A1: “Over-Current draw” - Depending on the weight of the drone, motor, prop size, and voltage the
drone is operating at, the maximum current must be known before risking in the air. To prevent
unwanted current overload, it is highly recommended to conduct a static thrust test to give you a
general sense of how much current one motor will produce with the particular setup. Static current
rating is usually 30% higher than actual flying current consumption.
A2: “Over-Voltage input” - depending on type of ESC, pay close attention to individual voltage
ratings. Input of non-rated voltage can permanently damage the ESCs.
A3: “Over-Heating Failure” - As ESC technology gets smaller and demands more current, heat can
build up rather quickly in the PCB. Heat will reduce the performance of
the electronic components and result in unwanted flight characteristics. To properly cool the ESCs,
we recommend using factory-supplied heatshrinks to wrap the ESC board, and attach where open-air
ventilation can be accessed.
3) Please contact your sales rep and create a ticket on our websites to resolve under warranty
case-by-case scenario (https://emax-usa.com/pages/warranty-support). **ESCs that have obvious signs of
crash damage or abuse aside from manufacturing defect may not be considered under warranty.