It has no motor sound...but has a varying "whine". Also, when the rudder is bumped that whine is going to change due to attempting to realign...which could sou

It has no motor sound...but has a varying "whine". Also, when the rudder is bumped that whine is going to change due to attempting to realign...which could sound like an injured cry. I know people younger than me complain about the pwm sound from my stepper drivers on my printers...but I cannot hear it.