if you look at recent high end rc escs, they have insane high frequencies. and compared to that, well analog would be the analog speed controllers. not good things. first, just plain eat up the batteries. because the resistors use the juice while escs just shut off the flow. and about those motors that last ten hours? thats alot already. 50-70? if that helicopters motor isnt just crap from the beginning, and its a as-long-as-it-spins-its-ok kind of motor, thats incredible. wish my motors would keep their perfomance up that long. my rc car motors. suppose one battery pack lasts say 5 min. id probably notice a loss in power after about at a maximum 50 packs. which is 250minutes, around 4hrs. and thats a BIG loss in efficinecy by then. the brushes would probably be almost gone by then. (im talking around 19t motors with 7.2v) then ud need to change brushes, cut comm, w/e. pros do it like every pack. are u sure the 50-70 hrs isnt with all the maintenance? cutting coms, changing brushes, reoiling the bearings/bushings? because if you ignore all that, you will finish that motor real quickly. it will stop just like sanddrags airplane’s did. most good motors are openupable(sorry cant think up the right word just now) for a good reason.
Okay, I’m convinced.
Pulsing a motor, at least at the frequencies we’re talking, does no harm to the motor.
Thank you for correcting me.
Sparks