i just got a brushless motor 5400kv with a 5to1 box it rated 16-18amps and for a 8x3.8 prop
i didnt have a the 8x3.8 so i used a 9x3.8 and on the watt metter wot got about 16 17amps but the motor got warm to fast and so i let it cool down room temp and set it about half throtale for about one min. pulling 6.5amps and it got hot and the 25amp esc was warm
called them guys i got it from explaning the above and they said that the prop was to big put a 8x3.8 on it and it will be fine is that so will over proping a motor but not pulling to many amps still cause it to heat up?