Hot motor mount

[H-1Airframer]

How hot does everyone's motor mount get on their 425? After only a short test flight after a rebuild I felt the motor mount and found it to be pretty hot. I shot it with an IR thermometer, and it was 142 deg F. It just seemed pretty warm to me. The motor is not overly hot, and I don't hear any crazy noises that would be indicative of a bad bearing. Let me know what y'all think.

[atkinson]

What's your kv? I'm no motor guru but I noticed when I went from 1400 to a 910 that run time was at least a minute longer and motor/esc temps were lower. I think higher kv motors have more "windings" and require more (longer) wire that is smaller gauge to fit the stator. Resistance will be greater on the smaller wires. I think motors are an inductive load so resistance changes when the motor is running. Most likely can't see anything with it sitting on the bench as far as resistance.

[H-1Airframer]

Im running a Hyperion 1000kv. The motor isn't really warm enough to worry me. It's just the motor mount- being that it is mounted to plastic, and all.

[dyin2fly]

same here, im running a hk motor, 1600 kv, 4 mins flight and the only thing really hot is the motor mount, clocked it at 148 1 time but average is 140- 144 degrees.
5 mins cooldown time and im running again. I've got 60 flights on it so far.
nothing fancy though, just a bunch of hovering and ocasionally some forward flights.

[H-1Airframer]

Well, I'll just keep an eye on it for now. I have a bigger issue now. I have a wicked tail wag that came out of nowhere. Settings are all the same and everything. Weird.