Okay so me and my friend just hooked up a quadcopter using 4 1,000kv motors and 4 50A ESCs. We have 2 (3s 2200mah 40-30C lipos) connected as a power source. The whole setup is using a KK 2.0 and is configured for the quad X configuration.The problem we are having is that 3 out of the 4 motors are stuttering and making scraping sounds, one of them is even smoking. We are unaware if this is a software issue, current issue, speed controller issue, motor issue, or even a wiring issue. We have rewired this quad several times and have even had this entire setup working before.We have not been able to have a flying multirotor for quite sometime because of this issue. Has anyone else experienced this issue before or know what the problem may be off the top of their head?Btw, the motors are turnigy brand, batteries are turnigy brand, the ESCs are hobby king brand, and 14 AWG wire is being used.If you would like to see a video for illustration, let me know.Thanks for your help.Ian
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Both of your suggestions sound logical, I am not sure whether to bank on the ESCs as a problem or the screws in the motors as a problem.
However, one other problem I have had is that I had been trying to use 30A ESCs before with these same motors and even after calibrating ESCs, I was never able to see them spin, they always stuttered and made scraping sounds just like the problem I am having now.
I am confused when you say that you calibrated the ESCs, and also when you say that you've never seen the motors spin... the thing is that when you calibrate the ESCs the motors should spin...
Maybe you are confuzing between programming the ESCs and calibrating the ESCs?
The procedure to calibrate the ESC is:
You connect the ESC input directly to your throttle of the receiver, you put the throttle all the way up on your transmitter, and then power on the ESC. The ESC should beep (the motor twitches), then put the throttle on your transmitter all the way down, and the ESC should beep again... now when you move the throttle back up, the motor should be calibrated, and it should start spinning linearly all the way to it's maximum power/speed when the throttle is all the way high... so here you SHOULD see the motor spin!...
What Mike Knott is saying could also be true... but, the easy way to test if the screws are in too deep is to spin the motor with your finger, and if you feel any kind of resistance (besides the resistance of the internal magnets), then probably the screws are too long, and probably it is too late for your motors, and you need to replace them...
If you take the motors that does not spin right now, and connect it to the ESC that you know it's working (spinning), and if it works, this means that the ESCs are not calibrated.
If the 3 motors that did not spin before, still don't work on the "good" ESC, then probably it means that the 3 motors are punctured or burned out...
If all motors spin under the "good" ESC, then calibrate ALL 4 ESCs
Okay so I just tried all the suggestions and it turns out it was the screws (too long). I just plugged in the one working motor into ESCs of motors that we're not spinning properly and it spun perfectly. I then found some shorter screws I had lying around to secure it to the frame and it spun just fine. Looks like the ESCs were calibrated all along. Guess I need to make a trip to the store for some more of those screws.
Thanks so much for all the help guys, really appreciate it!
I have had the motors attached to the 50A ESCs before and they were spinning fine (which I assume means the ESCs are calibrated). However, only recently I have had this problem where only one motor spins and the others stutter.
The 30A ESCs on the other hand were being used with another quad with different motors (still 1,000kv). With this quad I have never seen the motors spin once, I assume that means the ESCs we're never truly calibrated correct?
Replies
However, one other problem I have had is that I had been trying to use 30A ESCs before with these same motors and even after calibrating ESCs, I was never able to see them spin, they always stuttered and made scraping sounds just like the problem I am having now.
Thanks for the help so far guys.
I am confused when you say that you calibrated the ESCs, and also when you say that you've never seen the motors spin... the thing is that when you calibrate the ESCs the motors should spin...
Maybe you are confuzing between programming the ESCs and calibrating the ESCs?
The procedure to calibrate the ESC is:
You connect the ESC input directly to your throttle of the receiver, you put the throttle all the way up on your transmitter, and then power on the ESC. The ESC should beep (the motor twitches), then put the throttle on your transmitter all the way down, and the ESC should beep again... now when you move the throttle back up, the motor should be calibrated, and it should start spinning linearly all the way to it's maximum power/speed when the throttle is all the way high... so here you SHOULD see the motor spin!...
What Mike Knott is saying could also be true... but, the easy way to test if the screws are in too deep is to spin the motor with your finger, and if you feel any kind of resistance (besides the resistance of the internal magnets), then probably the screws are too long, and probably it is too late for your motors, and you need to replace them...
One more thing that you can do to test...
Rotate the motors.
Take the motor that is spinning right now, and connect it to an ESC where the motor is NOT spinning, and vice versa...
Also... test this without propellers (just for safety)
If you take the motors that does not spin right now, and connect it to the ESC that you know it's working (spinning), and if it works, this means that the ESCs are not calibrated.
If the 3 motors that did not spin before, still don't work on the "good" ESC, then probably it means that the 3 motors are punctured or burned out...
If all motors spin under the "good" ESC, then calibrate ALL 4 ESCs
Thanks so much for all the help guys, really appreciate it!
I have had the motors attached to the 50A ESCs before and they were spinning fine (which I assume means the ESCs are calibrated). However, only recently I have had this problem where only one motor spins and the others stutter.
The 30A ESCs on the other hand were being used with another quad with different motors (still 1,000kv). With this quad I have never seen the motors spin once, I assume that means the ESCs we're never truly calibrated correct?
Thanks again for your help.
How long are the screws going into the motors? This looks like the windings on those motors have been punctured.
I see this all the time on the phantoms I work on. Check this video and see if it sounds the same https://www.youtube.com/watch?v=WTJHGJeuptU
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