u/No_Kitchen846

Hi,
I have a 7-inch quad with AOS Supernova 2807 1400KV motors. The quad flies perfectly fine, but I noticed the motors get noticeably warm after a flight. They’re not too hot to touch, but they’re definitely warmer than I would expect.
I also have another 7-inch quad with a no-name stack and iFlight XING 2806.5 1300KV motors, and those don’t have this issue.
I tried changing various AM32 ESC settings (PWM frequency, timing, etc.), but nothing made a difference. I haven’t touched the Betaflight PIDs or any other tuning—everything is still stock.
What’s even stranger is that the motors heat up fairly quickly even without props when running them in the Betaflight Motors tab. I checked that the motor screws are not touching the windings, and the motors are practically new.
To rule out the rest of the setup, I installed my old iFlight XING 2806.5 1300KV motors on the exact same quad. They stayed cool, even during the same Betaflight motor test.
What could be causing this? Could it be the ESC, or does it sound more like an issue with the motors themselves?

What could have caused the capacitor’s legs to break off at the top? There was no crash or impact. The capacitor was simply lying on a piece of double-sided tape (it wasn’t firmly attached). I only noticed something was wrong when I moved it and realized it was loose.

Could vibration alone cause this, or is there another likely explanation?