RE: Futaba 6014 receiver heat issue
The water burn numbers are relative to time which is what produces a burn.
For example the machinery I worked with (for clothing manufacturing -shaping and forming etc., was at 375f much of the time .
I had to design controls which prevented operators from accidentally contacting the "hot' areas.
anyway a brief touch on very thin metal did not cause a burn, as the skin cooled the metal.
The same time against thick metal did cause a burn- -it all has to do with heat mass.
On the electronics we see gradual thermal rise and gradual cooling -so the critical temp is easier to control as the enviroment of the electronics acts as a "heat control/ heatsink'.
Example: if the fuselage stays cool, the radio stays cool.
The fibre glass fuselages will heat the fastest
dark colors increase heat
tinted canopies reduce heat internally -a little
A white film covered balsa fuselage is the best, for heat control
Hows that for info you really did not need to read?