I started noticing a weird issue on my eMTB with dual ESCapes. When I put the board on a bench and run it, one of the motors spins much faster than the other one. I tried swapping the motor/ESC connection (connected motor A to VESC B and vice versa) and the problem reversed. So it seems as if one of the ESCapes (the master one) delivers less power than the other one. I also tried swapping master/slave and that still didn’t change anything. The slave (former master) still spinned the motor slower than the other ESC. Any ideas where the problem could be and/or how to best debug it?
I thought that there’s a problem in the wires between the ESCapes and the battery, which could cause that one of the ESCs is not getting enough juice, but when I thought about it some more, that actually seems very unlikely since the wheels are spinning freely with no load and thus the ESCs only draw about 1-2 amps.