eagle_eye
10 mW
Hi all
I've got a new Q100H hub front motor (-> http://www.bmsbattery.com/front-driving/630-250w350w-q-85100sx-motor-e-bike-kit.html) from bmsbattery plus a KU93 controller with a Wuxing brand type half grip throttle (-> http://www.bmsbattery.com/accessory/390-thumb-level-throttle.html).
The batt. packs are 36V and 48V nominal and can deliver 30A plus continuously.
I'm observing strange behavior in medium and highest speed mode (3-speed-switch) - when slowly going to and beyond roughly 2/3-throttle, the controller suddenly shuts off the hub motor. It happens in no load and low load situation, drawing rather minor currents only. It seems like the controller can not handle higher rpm of the Q100H, its shutting off LVC style. After turning the throttle to zero and then from zero up the motor works again until going to higher RPMs. It cant be LVC shutoff cause the batt.packs is not going low voltage - its happening even with no load and fully charged batt.packs.
I also did the KU93 'shunt mod' soldering out one of the two shunts to limit the current to ~ 12A max. but its not changing the shutoff behavior described.
So what could be the cause that the KU93 controller suddenly shuts off the Q100H hub motor at higher speeds ? Anyone using a Q100H hub with KU93 controller and 36V/48V batt.pack going up to high speed RPMs w/o the motor shutting off problem ? It cant be possible that the KU93 controller is too slow for the Q100H, can it ?!
Thanks for any help
I've got a new Q100H hub front motor (-> http://www.bmsbattery.com/front-driving/630-250w350w-q-85100sx-motor-e-bike-kit.html) from bmsbattery plus a KU93 controller with a Wuxing brand type half grip throttle (-> http://www.bmsbattery.com/accessory/390-thumb-level-throttle.html).
The batt. packs are 36V and 48V nominal and can deliver 30A plus continuously.
I'm observing strange behavior in medium and highest speed mode (3-speed-switch) - when slowly going to and beyond roughly 2/3-throttle, the controller suddenly shuts off the hub motor. It happens in no load and low load situation, drawing rather minor currents only. It seems like the controller can not handle higher rpm of the Q100H, its shutting off LVC style. After turning the throttle to zero and then from zero up the motor works again until going to higher RPMs. It cant be LVC shutoff cause the batt.packs is not going low voltage - its happening even with no load and fully charged batt.packs.
I also did the KU93 'shunt mod' soldering out one of the two shunts to limit the current to ~ 12A max. but its not changing the shutoff behavior described.
So what could be the cause that the KU93 controller suddenly shuts off the Q100H hub motor at higher speeds ? Anyone using a Q100H hub with KU93 controller and 36V/48V batt.pack going up to high speed RPMs w/o the motor shutting off problem ? It cant be possible that the KU93 controller is too slow for the Q100H, can it ?!
Thanks for any help