My rule of thumb (personal) is to keep things below 130f (esc, motor) and batteries below 105f. If temps exceed this then changes are made. The only thing that is an exception is my straighline speed boats. I only make one or two passes and I've seen 190f in my logs on the controller (which I'm not so sure is an accurate temp reading anyway because my temp gun showed differently....but that temp in the log is directly on the board) and they have lived.
32" carbon rivercat single 4s 102mph, 27” mini Rivercat 92mph, kbb34 91mph, jessej micro cat(too fast) was
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