The EM100 was upgraded to an EM150. This was simple, basically a straight swap for the old EM100 motor controller. However, in an attempt to program the new controller the parameters for the old EM100 controller were lost. I emailed QS Motor to try and obtain software for changing these parameters to ensure a smooth motor control system could be implemented. I was only given a poor-quality version of the software I could already find deep in an emoto forum (https://endless-sphere.com/sphere/threads/votol-em-100-em-150-controllers.95969/), so determining how the program worked was time-consuming and not fruitful.
This new speed controller worked at low accelerations. However, when the throttle was rapidly changed the acceleration showed a visible drop in the battery voltage and the whole bike would not function until recharged. What was happening? Likely an overcurrent or brown-out event occurred causing a shutdown of the whole system. This was more likely to occur after discharging the battery (by riding) so is more likely to be a brownout type event due to limited battery capacity or battery amperage delivery potential.
The next step is to upgrade the battery, BMS, and battery charging system to ensure this isn't a bottleneck for the rest of the system. 144pcs 18650 batteries have been purchased to add to the existing pack of cells... TBC
Hi Rihcie, any updates on this?? I have reprogramed my EM100 controller on my my otherwise stock raptor. Curious to know what the next step is to upgrade. I'm running alot of flux weakening to get it up about 90kph for short periods.
Did you find the battery to be the bottle neck with the EM150?