well it may not be good for it but havent lost anypower with it thru magnet flux loss from heat. I do try to keep it cool with lots of air. most of those small fast electics you need to open open the front of firewall where the cooling holes are for the motor and the spinner to alow some air in the motor.

45-50 amps is fine with good cooling if not then trim prop some. with that 6x4 APC gas engine prop it will pull very hard not the fastest but man will it pull. On my FJ it looks like it will go from 20-90 in two seconds lol