I wish I took a screenshot or video, sorry. But in essence, after adjusting my motor mount and plugging everything back together, my motor would just jerk. I thought it was the belt tension being too tight (I did work on that, as it was too loose before), and it was too tight and very difficult to turn. So I fixed that. But the motor would still not spin and just jerk.
TL;DR I plugged in the ESC into BLDC-tool and noticed it faulted UNDER_VOLTAGE, and was reporting 5-20 volts (all over the place). I checked connections, rebooted the ESC, several times. I verified with my multimeter that the voltage coming into the ESC was 39 to 40 volts, which is what my voltage meter attached directly to the BMS was reporting.
I read that it’s possible my resistors for the voltage divider became loose and are causing extra resistance, thereby messing up the math. A visual check of the ESC didn’t reveal any obvious issues with those resistors, though. Difficult to tell for sure because of Ollin’s aluminum plate over that side of the ESC.
What’s the fix? Or any other ways I can debug the problem? It’s not throwing any DRV faults, and nothing visible looks “blown.” Do I need to get Ollin to repair/replace it?
I can upload photos if necessary when I get home tonight.