BL motors and load

Ah.. Thanks for shedding some light on that.

[GriffinRU]

Inductive losses would be load and RPM dependent. (Core properties, windings. PWM...)
And not to forget about inertia and rotor weight.
All the rest is very simple to calculate.

[zeropointbug]

One of many things that can be said about the Neu motors, is that they do not suffer from no/low load efficiency losses. You can rev the thing for hours with no load and it won't get hot. A feigao will literally get hot within seconds.