On an 80F day at the track, my ESC was 80-90F, my motor was 90-100F, and my batts were 100F.
BS
I run 6s, Neu 1512 3D(1700kv), when geared for 35mph I get ~130F for motor, and up to 100F for my highly modified Quark, that's on a 80F day at a race... the temps are more like 150+F when bashing.
Sure you could get those temps, if you were crawling around going 10mph. lol
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