Noisy motor ESC connection

ESK8 Electronics
1

Hey so i had this issue with motor

2

To be honest, i partly think this might be because of the esc you useā€¦ but if you know and have read that other people dont have issues with this escā€¦ then it might be something elseā€¦

Alsoā€¦ in the first run you madeā€¦ it seemed like the sounds disappears when motor starts to spin fasterā€¦

so yehā€¦ i cannot really tellā€¦ since I also didnt understand if 1st run is without sensors ā€¦ or both ā€˜ā€˜runsā€™ā€™ are in sensored mode

3

Yeah sorry about that. Actually, first run is sensorless. It makes some noise but I consider it ā€œnormalā€. Nevertheless, when I run it sensored it makes that weird noise, and I forgot to say, it comes from the motor.

Thank you for replying

1 Like
4

The thing that surprises me is the fact that, after searching in many forums, I havenā€™t found anything like it

5

yeh im not 100% sure what the thing isā€¦ i just remember a while ago someone also said that sensored car escā€™s not always work that greatā€¦ just dont remember about which car esc it was said.

maybe @Kaly can chime in, i think he has dealt with sensored motors a bitā€¦ just not sure will he be able to help as u use car esc @aha_96

6

Yeah probably has to do with something like that. Either way I can run it sensorless, so it isnā€™t a big issue. Anyways, I appreciate any help as Iā€™d love to use it sensored. Thanks a lot

7

yeh wait for some other folks to chime in, maybe update the title - car esc / your escā€™s model, so if someone also has it, so he can gain some interest in the topic.

8

I think its because of the ESC. Consider getting a bigger ESC that is not made for RC carsā€¦ or a vesc =)

9

If I had to do it again, Iā€™d definitely get the VESC. Unfortunately thatā€™s not a possibility right now. So I guess Iā€™ll just run it sensored. Thanks for the input

10

*sensorless

11

The problem with your motor and esc making noise when the sensors are connected is because of the order that the sensor wires are inserted into the sensor connector.

What you need to do is first take notes or a picture of how the sensor wires are arrange into the connector. You will have 6 wires one of each red, white, yellow, green, blue and black.

  • Now you are going to focus on the yellow, green and blue wires. This are the phase sensor wires and need to be connected in the same sequence as the motor phase wires. in order for the combo to work without that noise, which can kill your esc.

  • Next swap the position of any 2 wires form the yellow, blue and green. Then test the motor with the sensors using just a minimum throttle, if the motor do not jerk then you can increase the throttle input and you are all good to go.

  • if the motor jerks then by using the picture of the position of the wires, swap any other 2. You will have at least 3 combinations.

  • if this do not help with the issue then I can send you link to a 36 combination of the sensor wires and phase wires for you to find the correct one.

2 Likes
12

Wow awesome, Iā€™ll give it a try tomorrow morning and get back to you. Seems very straightforward. Thank you VERY VERY much

13

So I dedicated yesterday morning to it. Unfortunately, unsuccessfully. Made connectors for those 3 sensor wires and tried every combination possible. One combination, nevertheless, worked for about 20 seconds and then it started making the exact same noise again. So, for now, I live it in stand by. I have some exams coming up and want to focus on that.

Thanks a lot anyways