New ebike weird motor rattle sound(audio included)

Posted by xhwx@reddit | ebikes | View on Reddit | 1 comments

25Km spin test. Sounds normal.
https://voca.ro/17D1rMLPMGPc

35km spin test. Loud rattle periodically
https://voca.ro/1kwa2pXNuYtD

On road test normal to rattle.
https://voca.ro/1aGprwVEssiO

On road test rattle.
https://voca.ro/1lQVz787O72Q

Just wondering if anyone is familiar with the above rattle sounds and can determine if motor sounding like this is caused from motor itself or the excessive current output fr the controller.
I bought this from abroad so it’s quite difficult to get customer supports. Appreciate if someone experienced might known the issue. Thanks.

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Few-Age3216@reddit

Hello, my thinking is that smth is broken and loose in the motor but nothing essential. Harder accelaration will cause the object to press against something and not rattle due to centrifugal force while in a constant speed centrifugal decrease, that is when you start hearing the rattle.