Hot motor and esc

[Digger1973]

I am sure it has a topic I am just not finding. Edge 120hv and scorpion 4035 560kv. Set for low timing and pwm of 8 and both come down hot. Esc is around 170 according to the logs but the motor will burn the fingers if it is touched after landing.

Is bit normal or am I missing a setting?
Thanks

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[Pygmaeus]

What kind of amperage's are you seeing?

[Digger1973]

78 peak on thenlast log with 40-60 on average in the last three logs i pulled. I have tried both a scorpion 4035 560kv and scorp 3635 510kv motor with the same results. Would setting the edge 120 to outrunner mode help?

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[Lighty]

This is a hot combo. Don't worry about it

[Digger1973]

Thanks for the replies people. Much appreciated.

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[Xrayted]

Originally Posted by Digger1973

78 peak on thenlast log with 40-60 on average in the last three logs i pulled. I have tried both a scorpion 4035 560kv and scorp 3635 510kv motor with the same results. Would setting the edge 120 to outrunner mode help?

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NO outrunner mode! That is for high pole count EDF motors and has resulted in fire reports in some cases when heli guys use it.

170F is perfectly fine for the ESC in summer months. Thermal shutdown is not until 212F so you are a long way off from that.

Motors are tricky because you have to define what "hot" really is, and 130-140F is hot enough that you cannot touch the motor for more than a second without pulling or risk burning your fingers, but that is considered normal for a motor. Think of it like your car motor.....it will burn you if you place your hand on it, but it doesn't mean anything is wrong.

High quality motors and magnets are good to 200-300 degrees F, but that would instantly and painfully burn and blister your skin. What we perceive as hot and the fact that you can touch it at all without this happening demonstrates that it is not really all that hot.

Get yourself a cheap IR thermometer to keep tabs on the motor with actual temp values, and you will see they remain very predictable and shift with the ambient temp changes of the season you are flying in.

[Digger1973]

Already have a temp gun as i used it on my gasser. Thanks for the info. I work with heat up to 1000 degrees and am painfully aware of high temp burns. Nothing like smelling it before you feel it, and then that nice patch of waxy looking skin.

Just thought i would ask as i have never had a scorpion and castle esc feel so hot but they were also smaller ones. So normal it is, that is good to know.

Thanks

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[Relisys190]

I've run that same motor in my SAB 630 in the past, with winding temps around 165-170f after 4 mins. My LE4225-610 also runs about 170f

160-175 is normal for a castle also

Good luck!
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