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  1. Caprisvo

    Motor chatter/stumble from stop

    Validation time. It was a bad ground. Didn't suspect the connector between the controller and motor, as I'd looked at it several times. Turns out under closer inspection the ground connector tab was damaged. I had a ground on both sides of the molex connector, but it wasn't making it through...
  2. Caprisvo

    Motor chatter/stumble from stop

    Ground is good at molex connector. The main connector could possibly have a issue I guess. I'd have to pull the lid of the hub motor again to verify it and all other signals are in fact making it to the motor. No change from the amp setting change. I'm not really sure what to call what it is...
  3. Caprisvo

    Motor chatter/stumble from stop

    I know the wire connection in the hub is golden, and the connection at the hall connector to the controller is solid. The push together main harness connection between would be the only spot I have no to way to verify. Visually looking in the plug ends everything looks OK. Wish now when I had...
  4. Caprisvo

    Motor chatter/stumble from stop

    I may have misunderstood what E-HP was asking me to check With the hall connector plug disconnected, measuring voltages on the controller side of the plug using the black wire for ground I get 5v on red, blue, green, yellow, and white wires. Actual is 4.65v on red, 4.96v on all others. This...
  5. Caprisvo

    Motor chatter/stumble from stop

    All wiring hooked back up with the exception of the hall sensor plug from controller to motor. Blue, green, yellow hall wires on the controller side of the plug all measure 5v.
  6. Caprisvo

    Motor chatter/stumble from stop

    On the controller side of the plug? I'll have to put some things back together tonight to test that. Currently have the hub motor opened up. If they are all 5v, testing on the controller side of the unhooked hall connector is that proof that controller is borked, or maybe one of the settings...
  7. Caprisvo

    Motor chatter/stumble from stop

    Okely-dokely... Referencing the hall sensor test methods outlined here: Testing BLDC motor's Phase Wiring - Hall Sensors and Wiring. - Electricbike.com Ebike Forum I retested the hall sensors both on the bike with all wiring hooked up and controller powered on. Still see no...
  8. Caprisvo

    Motor chatter/stumble from stop

    *Update* I completely disconnected the hall sensor connector and tested the bike. It tests exactly the same in the garage with wheel propped up, and same chatter from stop and low speed when riding. Not sure if this tells anything other than the controller operates sensorless also.
  9. Caprisvo

    Motor chatter/stumble from stop

    Thanks for the reply. I did not test with the motor open. Didn't know to, or suspect anything other than compromised wire was wrong. I tested the hall sensors exactly like the video, and they show constant 4.86v when slowly turning the wheel backwards. I couldn't find much for specs on my...
  10. Caprisvo

    Motor chatter/stumble from stop

    Hello all, new here and looking for a little help/advice on direction to go with my current problem (apologies in advance for length of post). I ran into a package deal on some used components online locally and got a package deal that included a couple Bafang 48v 750w rear hub motors. Both had...
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