Hello
I have an evt 168 that had a bad controller so I replaced it with one of those 24-60v universal controllers it's a 1500w brush motor and the controller it rated to 2000w
well the motor works but makes a horrible transformer sound at 1/4-3/4 throttle but totally smooth at full throttle
every connection is soldered and heat shrink so it's not a bad connection
could it be just a crappy controller
ESP Support
said
over 6 years ago
We have run across that problem a couple of times with our 24-60 Volt 1000 Watt universal controllers. Usually when a brushed motor makes a buzzing or whining sound like that it is because of the controller.
J
Jason Thibodeau
said
over 6 years ago
that's what I figured
I don't normally like to use these Chinese controllers but I got it for free I like to use the Curtis 12xx series but they are expensive even used
thanks
J
Jason Thibodeau
said
over 6 years ago
OK I see you sell a 2000w 48v brush controller
I give that one a try then use the other one on my 500w bike
Jason Thibodeau