350W Bafang Motor Noise and Power Cuts Out

res0zvle

1 µW
Joined
May 11, 2025
Messages
1
Location
Texas
I have a Sondors Thin model with a 350w 8fun motor (Bafang BBS01). The motor makes an occasional whirring sound then the power is nonexistent but the bike's LCD stays on. If I turn LCD off and back on the motor comes back to life. On a 30 mile ride this happened at 3 different occasions during the first 10 miles. No problems for remaining 20 miles. Any ideas what this might be?
 
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