Hi. The HK controller is an Aquastar 120Amp water cooled
which has suffered all of the burn outs and never failed. SKU: 9052000008. The failed motor
s were all 2848SL 3900kv Brushless inrunner (WaterCooled) SKU:3900-2848SL. I have my doubts about the specifications as their watts and amps do not add up. I have a temperature sensor on the motor
sending info back to the TX and usually after a full charge and a fast run it would get to 60°C, then I would cool it to 45°C before the next run it burnt out at 85°C when I wasn't paying attention. The new motor
runs at about 45°C how ever hard it is pushed. Still using the 120A ESC. The new motor
was in the HK sale and I don't think they do it now SKU:S2858-2630. it just happend that the water jacket
for the failed unit fits it.