[Oblarg]

Well, upon further troubleshooting, it appears the problem is with the electronics, which is bizarre. I have no idea what exactly could be causing this, so any advice would be appreciated.

In the course of running each motor independently off of the battery, we found that the problem (ugly pulsating sound, bad smell) only occurred when a motor on the same gearbox as the motor being driven was plugged in to a certain victor. During this test, there was no battery plugged into the main electronics system. The other victors caused no such problem.

I hope that testing a motor separately while other motors on the same gearbox are plugged into motor controllers is not a serious hazard for damaging motor controllers - I know that the other motors essentially function as generators when you do it, but I never figured this could cause electronics problems as seeing various lights come on while wheeling robots around is something that I see all the time.

So, any insight into what type of problem could cause this and/or confirmation that our testing procedure isn't horribly wrong would be welcome.