Motor failures are generally due to heat cycling, and it seems to me heat cycling is worse on LiPo batteries. I'm guessing because of the higher voltages there's just more wattage going to the motor creating more heat.
AFAIK the NiCd's supply comparable amperage to the LiPos and that's why systema always used them
And I understand the FCC motor is not the end all be all motor, but we want it to be! and that's why we're so critical of it lol
How much work is it really to redesign the head properly? At the very least I'd like to see the original 4 axially mounted screws at the head of the motor where the most force is going to be applied.
I could write an essay on why side mounted screws are a REALLY bad idea, but you just need to look at any industrial motor out there