Hi,
I am very interested in buying one of these S800 and here I was thinking about this problem of heating of the ESC's and vibrations of the engines. Everything must be connected.
With the heating of ESC's the supporting arm of the motor is more moleavel and causes vibration to occur are possible.
A solution that I liked that you guys try out to see if improved cooling would put metal washers in all ESC's cover, making a current of air and dissipating the heat that builds up there.
Like This:
View attachment 6618
If someone is willing to try to tell because I'm from Portugal and the climate here is very hot today is 35 º C.