Phantom making strange whistling noise & Bee attack video

[usafloadc17]

Funny you mention temps. My left rear motor always ran hot. When I replaced it, it still runs hot. I thought it was a bearing issue, but I now believe it to be a balance issue with my cheap Chinese gimbal. Hopefully a transmitter mounted to the opposite side will help.

 

[N017RW]

Possibly, and good hypothesis.

 

[usafloadc17]

Can an esc cause heat issues?

 

[N017RW]

I personally can't rule it or out, but for it to fly correctly otherwise would have me looking elsewhere. That's me, YMMV .