Hi guys! So basically I upgraded my battery from a 10s3p to 12s3p on my short board. I then changed from Maytech vesc to flipsky 6.6, Bestech D140 charge only BMS. I would first out with Diyeboard, meepo…hub motors. I used them in the past at 1-s with Maytech’s vesc and I like them. Only concern was the speed, being actually 65Kv gives great torque but low speed. On both the vesc I am using @Ackmaniac’s firmware, connect via CAN BUS. On the new Flipsky 6.6 I first tried BLDC sensorless but the motors really struggle to start even on bench testing, while was fine at 10s before. So I decide to move to FOC sensorless. Weird thing that I noticed, the motors spin in one direction during motor detection, and then they run in the opposite one on street. Is it normal for FOC detection? I repeated the detection like 20 times always the same. No reverse motor configuration enable in the VESC TOOL. Except for that, which doesn’t happen in BLDC, FOC is really deadly silent. I have a weird behaviour when I engage gently the brakes on bench test https://www.youtube.com/watch?v=uybKdKPunB8. Basically they keep spinning really at low speed until I brake stronger (mainly the motor connect to the slave vesc). Then I thought maybe it’s only on bench test and I tried out on street…The accellaration is really smooth ecc…FOC does remove like 2-3 kmh, but the overall experience is better, bad news they do not brake! Really I was use to a really strong and reliable braking force with these motors at 10s and now that I move to 12s and new vesc they suck. I had to foot brake all the time, that would be expensive if I need to change one shoe every month
Setting are basically the same as before:
I was aalso thinking that maybe now 57V is too low since the battery is 50V fully charged but it doens’t make any sense because it barely brakes at low speed too.
Do you guy have any idea way it sucks like that? am I missing something?
PS: @sayekim Hi man, I know you used meepo hubs at 12s, maybe you see the problem. Thx!