I have a Trex700e FBL. All stock. Motor is Align 700mx 510kv and esc is CC 120 hv.
I have had about 5 flights on it. I am still busy setting up the Vbar etc.
On Friday, had one great flight and then on the second, 30 sec into the flight, i had a big 'kick' on the tail, the motor sounded very rough, and started loosing rpm. I was in a hover, over the runway, so just clicked to hover and landed. All OK.
I checked the temp of the motor and esc with my finger and they were both cool and the motor turned freely by hand. I tried to spool up the rotors again, but motor was 'kicking' badly and wouldn't accelerate. I stopped and flew my other heli.....
On the problem flight, i had just taken off, gone to ST2 and did 2 or 3 short fast climb outs. No more than 80 throttle for 2 or 3 seconds when it went wrong.
This morning i downloaded the data off the esc. All seems OK on the first flight. Second just shows a big rpm drop and the landing. otherwise all ok.
I took the head and main gear off the heli to try the motor on the bench. When i plug the battery in, i get the 12 beeps VERY softly and the motor won't spin at all. By hand it turns over like normal.
Sorry for the long rundown of the problem, but how do you tell if its the motor or esc thats toast..... or both.
i have a 2nd machine (700 f3c) and can use its esc to test this motor and this esc to try on the f3c's motor.
I am just worried that a burnt motor could damage and esc and vice-versa.
Any advice, please.