So this is my first post. I finished with my board and was about to run it when the wheels started to act funky. 1 motor is shorting out and the other is clunking. Not sure why. I disassembled the board and laid everything out and tested it and the issue persists. Any ideas? Burnt out esc or motors? They ran fine before I soldered the motor leads
What esc are you using?
If it’s a vesc I would re do motor detection and see if what happens. I would also double check your phase and sensor wires
Either shorting phases or magnet scraping/loose in the can. I’d take off the can and see what you can.
DV4 makerx and 6368 190KV Motors from mboards. I was able to run them unsensored so its probably the hall sensors that failed. I disassembled the motors and they looked fine for the most part. I will re run the motor detection and see if anything comes of it.
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If redetection shows it’s an issue with the hall sensors, try running sHFI or VSS. Sensorless has got a lot better over the passed few years.
Although if the motors are still under warranty just swap 'em
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Yes either of those or HFI. I would make sure the right wires are to the right sensors for the connectors.
Looking at how they would spin though I would think it would be a single hall sensor.
Based off the way it looks/sounds like the cog is in the same spot in the rotation which could be caused by a bad hall sensor.
Maybe run a continuity check with a multimeter and see if it brings back results for all the halls. I bet you have at least 1 that’s not having a good day.
But like @tech.shit said just get them replaced if within warranty
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One motor is harder to spin than the other, even when the leads were unplugged. Would running this motor risk blowing my ESC? one motor spins freely and the other rotates in clicks. I’ll probably swap them to be safe.
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I would swap the bad one out at the least for a different once. It probably won’t blow your esc but it’ll cause you to have a really bad day if you’re riding and it locks up.
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So indeed there is a bad hall sensor. Do these numbers look ok with regard to resistance ect? what do these terms mean? motor flux linkage, motor R, ect.
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It’s interesting the inductance on the bad motor is 0 (Motor lq-ld)
That might be why it has that stutter in it, could be a burned set of coils. If you can pull the can off and check out the coils that would be my next move
So I examined the coils and everything looks normal. furthermore I re ran the tests and didnt have 0 for the inductance. I did a 10 mile ride and both motors ran fine and were warm but not hot. they seemed similar in temp. Either way I’m gonna replace them.
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Interesting.
I would swap them out but keep that in mind that they still worked.
It could’ve also been something with the phase wires or sensors being swapped on the wrong pinout.
But sounds good hopefully swapping those motors solves it for good
Ok, I’m going to keep posting here until I get all issues ironed out. The board is running good, but there are a few small issues. I keep seeing the milage on my remote zero out every 5 or 10 miles, and one time the board rebooted as I was rolling to a stop. I’m not even making out my amps. Any advice ? I don’t want to be thrown on my face.
It seems the board is rebooting quick enough for me not to tell.
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do you have telemetry? like bluetooth or a Voyage or metr? check for faults in the vesc terminal (just type “faults” and hit enter)
also, as others have said, triple-check your connections and redetect motors when in doubt.
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Ran into the same issue using hall sensor… when I switch to sensorless the problem goes away. Tried using HFI and there’s a high pitch noise when I hit the brakes…
Won’t have access to the board for a few days but will test when I get back…