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- Not mudgard / fender - Not disc brake ( I pulled the caliper and tested, same whine continued) - Whine began while we were on a tour of national parks earlier this month. It does seam to be getting progressivly worse. - Sorry for my lack of knowledge on the subject: when you say it could...

I'm not proficient in electric bike repair The motor "whines" quite loudly when spinning, both with the motor engaged or not engaged. The "volume" of the whine doesn't change much with changing rps, but the pitch of it does. I have a video of it, but apparently cannot upload videos here, just...

My wife has a Magnum ui5 ebike with a failing Bafang 36V 350W rear hub motor. (BFSWX02). Will a MXUS XF15F rear hub motor (also 36V 350W) fit her bike? Is it a reasonably reliable motor or should I buy a complete replacement wheel with hub from Magnum for more than double the price of the...