Ran a test with the old rotor design,, not optimized or anything special just using it as is,,
no load w\coils
15V 162mA
loaded
low side green .48V through 49 ohms .0098A draw increased to 166mA
high side red 5.22V through 500 ohms .01A draw increased to 167mA
So it seems that the increase in draw is related to the output amps only when using the same coils.