Solved - Leaf Bike 1500w hub motor making grinding sounds

Hey

So, I've got a brand new Leaf Bike 1500w rear hub motor. After just a few km of easy cruising (1500w@48v) it started making the noise in the video. When the motor gets a little warmer, the sound disappears.


Anyone with the same experience or a preliminary diagnose?

Video:
https://youtu.be/cmNejgG28zA

Could be a few things: Bearings, a loose hall sensor being rubbed, a magnet being a little out of place that rub. I'm leaning toward something internal rubbing as it goes away when things get warm.

If it is new, I'd contact Leafbike about it - I believe they are pretty good about replacing new motors with issues.

Yeah, contact the company. They do provide support. Even if their web page kinda sucks and they look like a random fly by night Chinese seller, they ain't.

Update:

I've opened the motor and found nothing that looked wrong. However, the rubber seals that rub against the axel looked and felt completely dry so I lubed them up a little.

When running the motor again the sound was there, but after a few seconds it started fainting. After 10 more seconds it was completely gone. So far it seems the seals was the only issue


Thanks for the input

Solved.

My Leaf motor made a bunch of noise after the first hundred miles cuz the spoke tension was extremely uneven. I torqued all my spokes nice and tight and you probably should too because that is one thing they aren't good about in China.

Oh!
I didn't know it was teh seal.. yeah, my seal makes all kinds of noise and i think i noticed it within a hundred miles or so on the motor. It's not a big deal.. rubber's gonna rub!