... smooth and accurate throttle linearity ESC 85A,70A,60A,50A,40A,30A,20A,12A,8A brushless speed controllerfor HelicopterWires Connection: Always ... .Insulate all solder connectors with heat shrink tubes4.Plug the “JR” connector into the receiver throttle channel.5.Controller Red and ... ESC85A SBEC IN THE PACKAGE ESC 85A,70A,60A,50A,40A,30A,20A,12A,8A brushless speed controller