Anyone experience neo motor failures? We had 4 fail in the last week. We first noticed that our robot didn’t quite drive straight (neo’s on the drive train). After taking the drive train apart, we noticed a difference in resistance when hand turning one of the motors. We found other suspect motors with similar issues. We did some current testing of good and 2 bad motors in an unloaded setup. The bad motors showed the following symptoms
#1. It spun very slowly for about 30 seconds. When we went to unplug it, the motor wires were hot to the touch and the Spark Max was getting hot too.
#2 spun up fast, but screeched and started smoking. Then the breaker on the PDP popped. Again, wires were getting hot.
2 more motors were found to have much higher than normal current draw in another drive train.
Our drive train has two motors on each side connected mechanically with one motor in “follower” mode. I’m wondering if this is somehow related to our issue.