Originally Posted by grubby
I run that motor on a daily basis in my 57SC running a 15x6 on 4S 40C batteries and it comes down hot only if I hammer on the throttle and do lots of hovering.
You honestly might want to cut another vent hole in the cowl like most other models. Also did you cut the cooling hole in the bottom?
I think I agree with the extra cooling hole...I'm not hammering it; just a few full throttle bursts (<10 sec.) each flight and only after I've dropped the voltage some. Didn't have to cut a cooling hole, the fuselage comes with a one (see g. hanssmann's photos above).