Ninja 250 "Clone" Made in China

[Dui ni shuo de dui]

I suggest you try painting the motor covers from the inside with black, matte paint. Then the heat coming from the windings will NOT be reflected back, but "absorbed" by the covers and discharged outside. According to multiple observations, the temperature dropped by 10 degrees.
When I chose 205 motors for my bicycles, I asked to install ribbed covers, when rotating they cool better than smooth ones.
The temperature of the magnets can be measured with a laser thermometer on the motor hub where the magnets are glued, in my case the temperature did not exceed 60 degrees, even after a long climb into the mountains, but of course my phase current did not exceed 300A, and the battery current 150A.

Thanks for the suggestions, I guess I can try this, shouldn't be too difficult.

 

[Dui ni shuo de dui]

Not much going on recently as I'm working on other projects. The bike still runs great, no problem at all.

One remaining issue I had was that my headlights' plastics are low quality and they tend to deteriorate extremely fast under the sun exposure. They get all yellowish and blurry in just a few months. I've already changed them 3 times and can't seem to find better quality ones, they only seem to be getting worse. So I decided to put some tint film over them, for better protection.

They looked like this:


Applying the film isn't very difficult, the trick is to constantly spray water underneath it:


And the final result:




I really like it, it looks a whole lot more agressive. Should have done this earlier.
The tinting film doesn't noticeably affect the light output, because my DIY LED lights are already so powerful to begin with...

That was a quick and easy improvement, hopefully this will help protecting the plastics for a long time.