This question is on a 430L motor and Align ESC that I "borrowed" from my 450 sa ARF kit and installed on a BEAM A4 heli. I figure because i have a trex 500, 600 and 2 450's its safe to ask my question here.

The motor on the BEAM is really hot after a full battery pack. It was just simple hovering for the trial flight. I really couldnt hold my finger on the motor very long before it hurt. wasnt smoking or anything like that just very very warm. I dont know how many theeth are on my main gear but i am using the 13 tooth pinion.

I believe the high temp is a problem but what should i look for to change/address this?

Thanks all.

Do you have a heat sink on it? My stock 430xl doesn't get too hot at all and I don't have a heat sink.

Skarn

Like Skarn, I have a stock TREx V2 with the 430XL motor (which is a higher kV rating than the 430L) running on a 12T pinion and motor temperatures have never gotten above 105F, even after 8 - 9 minutes of flight.

With all of those Helis, you must have a temperature probe; how hot is it getting? How warm are the ESC and LiPo packs? How long are you flying? How much are you putting back in your LiPo packs?

Mine is uninspired on a 13t pinion too, I need to check the main gear teeth count on those two helis.

I hadnt considered all the aspects of it. I have no heat sink, I do have a temp probe and didnt think to use it. The ESC isnt really warm at all. I would say its close to all the other ESC's that I have. I an using ThunderPower Extreme V2 2200 3s and it runs to normal cutoff as it always has. I didnt notice the motor getting this hot in the Trex, just in the beam. I will run it again and take temps and report back.

Thanks all

My Trex 450 V2 gets very hot, and so does the ESC.
I am running for about 7 min. max on the Kong Power batteries

I can hold my fingures on it, but it is still pretty hot IMO.

???????