Motor Blown?

[Dunlee 4]

Hi wondering if anyone can help. Car suddenly stopped working and strange noise is coming from the motor. I’m wondering if the motor has blown?

[Juggular 4965]

That looks like cogging.  Cogging tends to happen with sensorless motors, usually at low RPM.  

It tends to do better at medium to high RPM.  If you are running at low RPM, sensored motor, or even brushed motor would do better.  

 

[Finnsllc 917]

pinion not gelled with spur? sometimes the motor can slide out of adj.

[Dunlee 4]

The cogging at low revs was something I looked into when I first got the motor and I found, just as you say,  it’s normal with a sensorless motor.

Something went in the motor and store have said it looks like something’s gone in the motor and to send it back. I was using a 3s Lipo, the instructions said that It could take a 3s Lipo but I’m wondering if it was perhaps too much? It was like something popped in the motor and then it struggled to move. I’m wondering if I should use a 2s lipo instead?

[Dunlee 4]

On 5/29/2020 at 2:47 AM, Finnsllc said:

pinion not gelled with spur? sometimes the motor can slide out of adj.

Yeah I checked that too bud but it was fine. Something went in the motor. Wondering if it was because I was using a 3s lipo?