45amp Esc Scorpion & -6 motor Hot help

[xdreamx]

Before i used 55amp ESC scorpion on same motor only warm. Because of the side i changed to 45amp much smaller less weigh. then hot problem

Now I use scorpion set -6motor 12T & 45amp. Well my Esc was set as Default with the IR connectted while flying on PPM. I run it with Thunder Power 11.1v 2250mah 3s 30C. After 4mins flewing my ESC,motor,and battery getting hot about 85 degree, so what's the deal? help me out plz.

[francis234]

i used the same 2221-6 motor on 3s. my pinionis 13t. n i run extrenal bec . esc i use is cc45. flight time just about 3.30 mins. everything run ok .

[FlyDaddy42]

The Scorpion HKII-2221-6 motor is a 52 amp motor ( Max continuious power 525 watts). If we were to follow the amp draw from beginning to end ( Batt -- ESC -- Motor { excluding Rx and servos for this senario}), the amp capacity of the ESC would need to be equal to or larger than the max amp draw of the MOTOR.

If you use a 45amp ESC for a 52amp Max Motor and you set your pitch on your Helicopter such that it draws the motor max amps, your ESC is going to get hot. For a 52amp Motor, I would recommend an ESC that is at least 55 - 57amps ( 52 x 1.05 = 55 or 52 x 1.1 = 57 rounded). You don't want to go too high and put yourself in danger of burning up your motor.

With a ESC of 55amps, I would recommend using a 2.2a battery ( 2200 mah) with a C rating of at least 40. This way, you will never use more than 62.5% of the amp draw capacity that the battery is rated for. Your battery will never get hot, maybe warm; but never not.

Example:
2200 mAh 40C Battery ( 2.2 x 40 = 88 Max amp capacity)

55 Max ESC amp Draw + 88 Max Battery amp capacity = Approx 62.5%

Base on the research that I had done, the recommendation I found was that you should try to keep battery amp draw as close to 60 percent or less as possible for maximum battery life.

Hope this was clear and helps.