We have a 7.31:1 KOP differential drive with two NEOs on each side, using the standard toughbox housing. Since we first put the robot together the back right motor has heated up. We replaced it, stripped and rebuilt the gearbox, and more, which seemed to fix the overheating and allowed the robot to drive straight. Fast foward to practice this weekend and the robot turn right is even worse. We run each motor independently and the front one is smooth and quiet, the back one does not start and pulls the full 80A.
Since we only have 4 days to fix this, I was hoping I could compile a list of problems so we know exactly how to solve this efficiently. First thing first, could this be electrical? Rev HW Client shows no faults, but the motor pulls 80A when run at any speed. Other than that, we are thinking to replace the motor, pinion gear and key on the shaft, and possibly more gears. Yet the front motor in the gearbox is 100% operational? Any insight on common culprits of this we may not be thinking of? The wheels turn equally freely on both sides when disabled, so we doubt its something in the gearbox binding.