Originally Posted by
TBOTubed
Hi
I’ve noticed a similar thing back when we were using the older sw but would have to recheck my car to see if it is still there.
I figure it happens at the point where the ESC switches from sensored to sensorless internally.
Even though it is quite pronounced when bench testing(the wheels off the ground) I don’t think it happens with the car running on the track as the ESC will switch only when certain parameters are met(load, amp draw, speed, throttle input and the likes). So I don’t think it is a problem as I can't recreate the the symptoms while the cars is rolling on the ground.
Please correct me if I’m wrong.
Joe
Update...
I took off the sensor cable to run in sensorless only and the motor runs nice and smooth. I bought a new sensor cable and the problem is still there. Maybe you are right about bench testing switching from sensored to sensorless. It just bothered me because this just started today...it has never done it before even with bench testing. I ran the car outside but could not replicate the motor stuttering at 1/4 throttle since I did not want to run after the car and listen. Oh well, at least I have a new sensor wire. Maybe a bad sensor board in the motor? Just throwing out ideas but if anyone knows where I can get a new sensor board for a HW XeRun 13.5 motor let me know...any other suggestions?