Have a weird electrical noise from rear Hub? Hub still works but draging and making a funny noise on throtte up? It most likely the controller has overheated and blown one or more capacitors ! they are easy to identify as blown, they will be bulging outward or burnt or the plastic wrapping...
Hello ebike enthusiasts ! New for this summer - i added liquid cooling to my 3000 - 12000watt 96v 80 mph QS rear hubdrive motor ! and it has worked flawlessly!