I have an older sparta emotion C4 ebike. Which I keep as a spare to my main commuter ebike.
The bike has a sanyo CMU9 geared front hub motor and runs on 36V
Recently I somehow managed to fry the original ananda controller.
I replaced the controller with a cheap chinese ebay generic one a 350W "brainpower kslp45" which I bought with display.
(This controller can also work without Hall sensor)
After replacing the motor runs and has power. But the max speed is 19km/h. (the display connected to the controller says it's 54km/h)
I measured current consumption and very low current at idle / no load. So I assume I have the HALL sensor wires correct now.
I also tried without the HALL sensor and with a different throttle.
I tried increasing current limit, set smaller wheels size. Still only 19km/h.
Ebay seller ghosted as usual. And no longer list this controller + display set.
I know this CMU9 is a slow wound motor. But I shoudl at least be able to get the original 25km/h right?
What am I doing wrong? Did I buy a shit controller and do I just need another?
If so which one?