Soldered up the power system for the Kaddy then did a quick test and something odd happened. I throttled up the prop-less motor, after working well at low throttles, I pushed it up higher - just a quick wave up and down - when at around 50%, the motor went out of phase. I unplugged the battery, reset Tx and replugged the battery... Motor didn't beep, but still responded to throttle, though still out of phase (guess it needs the right phase in order to do it's start up and cell count beeps) "Oh poo", I thought, "are my 40A ESCs all cheap and breaky?".
Switched 40a ESC to another motor, that worked fine... Put another ESC (30a) on original motor... that also worked fine? ... Paired original motor and 40a ESC... They work again now!
What happened there? I didn't throttle up above 50% this time, in case it's bad to do that with an unladen motor, but I don't know what else could cause it. Unless anyone can spot anything off with my rather lazy test bench:
View attachment 235604
The screws on the motor aren't long enough to reach the coils and cause a short out. Could a loose grain of solder somehow fall into the coils? Could electric arc between the thin bits of exposed gold on the motor-ESC plugs when given enough throttle? I'd like to know the cause before I take off!