Thats only 10C off its max operating temp, not very scary, BUT, it will not be as efficient at those temps, he could just run a fan and heatsink, but a bigger motor would be alot better!
BTW ; Whats up with your sig capt? Whats the problem with your grandark? Maybe we can help! :)
The problem with nitro's these days are that they arent brushless... LOL
Losi 8ight e
MMM / Neu 1512 2.5d/f
Thunderpower 5s 5000