Heat-Problem

[Marco]

hi guy's

i run a fantom 10x2 checkpoint can with ib 4200er shv cells and a sphere comp. in my yoke, as you can see on the pic i cool my esc with a fan and cut the holes to cool the motor.
i have it geared with the original spur gear 84t and a 14t pinion.
i diden't those prob's with the xx-4, why do i get them here? is my gearing wrong or what? i don't get it.

what do you guy's mean?

Greets Marco