Many brushless ESC allow the user to set the Electronic Advance Timing.
High advance timing (hard timing) is suitable for high pole count motors (above 6
poles, such as Jeti, Mega, Plettenberg).
High advance timing gives more output power at expense of efficiency.
Low advance timing (soft timing) is suitable for low pole count motors. It gives
higher efficiency with some loss of output power and is recommended when long
run-time is the primary goal.
A recent type of brushless motor is the so-called "outrunner".
These motors have the rotor "outside" as part of a rotating outer case while the stator is
located inside the rotor.
This arrangement gives much higher torque than the conventional brushless motors, which
means that the "outrunners" are able to drive larger and more efficient propellers without the need of gearboxes. |
