i have a Huari scooter (same design as Emax) and the speed seems limited to about 22mph...
The motor is a 750W WDF and on their website, its speed is "selectionable 35km/h or 50km/h".
So i'm wondering how the speed could be limited ?
1/Throttle : i've looked at the hall sensor and all the magnet is seen by it.
Furthemore, the throttle is no more effective before the end of the rotation.
So if something is limiting, it shouldn't be in the throttle.
2/I made picture of the controller board :
I've made red circles where i found unusual things (for me) :
- 2 big shunts (why 2)
- small hard link
- small yellow component
If you see the mysterious restrictor, please tell me.
I measured maxi output current of the battery is 30A.
Scooter on its stand :
Voltage battery at rest: 51.1V
Throttle turned to the max :
Voltage between phase-neutral : 25.4V continuous, 55.8V alternative.
Voltage between Phases : 0V continuous, 37.5V alternative.
My multimeter is supposed to measure RMS value in AC position, but was not an expensive one, so i'm not sure it's very accurate.
3/In the motor : i would prefer not touching the motor for now...
I hope it is a voltage restriction because i want to keep the range.
So if you see something, i thank you in advance.