failed bearing

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    Ultra motor with failed secondary gear bearing

    I've got a new Ultra Beast from Biktrix (Bafang Ultra), about 200 km on it. Noticed that if I crank pedals with motor OFF I can hear the entire motor being turned over and can feel the resistance. Biktrix has been helping me troubleshoot via emails/videos sent back and forth. Have determined...
    • E-Willy
    • Thread
    • bafang ultra failed bearing secondary gear ultra beast
    • Replies: 3
    • Forum: Bafang Forum
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