I had an ESC die during a flight recently. Just after takeoff I was a full throttle and I heard and felt one shut off. I thought I had lost a prop. I was able to fly fine with three motors to get back to my LZ. I was running 6 batteries and installed the extra capacitors from Paul B & Braedin B (GliderPilot & Glydrfreak) Flights & Build Modifications (before I started running 6 batteries).
I replaced that ESC with an identical one from OpenPPG (thanks @Pdwhite) and now that motor spins slower than the other 3. Obviously I can only tell at low speeds, but at the lowest throttle that motor does not even spin.
Do the ESC’s have a throttle profile that needs to be programmed? I know @GliderPilot has replaced his ESC’s before, any idea?