I had these two beauties out again yesterday for a marathon flying session :)
Unfortunately, heat build up and dissipation continues to be a bit of an issue with the Hobbywing ESC. Although now less than it was with the previous setups, there is still more heat build up at the end of a flight than with other 40A ESCs I have tested. By comparison, I had been running a Turnigy Plush 40A ESC in the Su-27 V5 previously with this setup and I never had any problem with heat build up at all, most times depending on the outside temperature, the ESC temperature was the same after landing as it was on takeoff.
Yesterday, most of the flying was done when the temperature was about 6 C/43 F and there was still more heat in the Hobbywing ESC than I have noticed in other 40A ESCs I have tested. Not anything that really worries me to continue using this ESC with the Turnigy 2200/MA 6x4x3 setup, just a bit disappointing and surprising. By comparison, in the Mig-35B shown above, I am running the Deal Extreme 2212/6 2700 Kv motor and RC Timer 6x3x3 carbon prop combo with the Turnigy Plush 40A ESC. This combo pulls 33.6A and the Turnigy Plush 40A ESC was barely warm after each flight.
So as mentioned in the previous article, I suspect I have a bit of a "dud" Hobbywing Skywalker 40A ESC which just based on it's ability to dissipate heat acts more like a 30A ESC. I will continue to run it with the Turnigy 2200/MA 6x4x3 combo and monitor it regularly, but it won't be usable for any of my other motor/prop combos despite it being rated the same as the Turnigy Plush for amps and burst amps.