Q. What port in the receiver do I plug my 520/560 into?
A. Electronic Speed Controls always plugs into the throttle channel, typically CH #2 for a two-channel radio and CH#3 for a 4 or more channel radio.

Q. What is B.E.C.?
A. B.E.C. stands for Battery Eliminator Circuitry. This means the speed control supplies power to the receiver and servos from the motor power battery so there is no need for a separate battery pack for the receiver.

Q. Is the 520/560 reversible?
A. Yes, they are both reversible type speed controls with a 3 second delay for safety.

Q. Does reverse have variable speed?
A. No, reverse is one speed, approximately one quarter that of forward.

Q. What are the motor limits on the 520/560?
A. SP-520: No lower than 19 turns.
A. SP-560: No lower than 14 turns.

Q. What if it overheats and quits running?
A. The 520/560's are equipped with a thermal shut-off circuit. Once the ESC cools off it will start working again.

Q. How do I avoid overheating?
A. Make sure you are not using a motor with lower turns than is recommended. You may also be over-geared or be shifting from forward to reverse too much, this can put more load on the controller than it will handle. Try using a smaller pinion to reduce the current draw, this will also give you longer run time on a charge.