Has anyone ever experienced a motor not being able to spin up? It just sort of jitters back and forth like its trying to start, but wont spin up. The weird thing is that if I disconnect and reconnect power, the problem goes away. It is only about 1 in 4 times this happens. I am running AXI motors with exceed rc ESCs.
Thanks!
Replies
I did see this if the ESC timing setting is too agressive or start sequence to fast. Try to set the timing setting and start sequence at low or medium (soft or very soft for start sequence) to see if it helps.
Could be a defectuous ESC, bad wire or connector soldering problem. Last, can be a defectuous motor, but AXI have rigourous quality checks so this is less probable except if you did burn out a motor phase perhaps because of bad previous starts.
First check wire and connectors soldering. Then try to swap with another motor and see if you still get the problem. Then you'll know for sure if it is an ESC or a motor problem.
Anyway, if the motorwireconnection fails in flight, your copter will flip and crash.
or you have blown one or more coils in your motor. If it tries to start against one of these coils it will just jitter back and forward. if you give it a little push, it will spark into life.
This can be cause by overloading your motor with too large a prop or letting the motor get too hot.
If it does the same thing with a different ESC, replace the motor as its probably only a matter of time before it fails catestrophically.
Sounds like a bad ESC. Try swapping in another one.,