Dragonsgate - Thanks for sharing the story again. I'm new to the forum and had not heard it before. Good thing you had the external rev limiter.
Did you happen to do a post-mortem autopsy of the controller? Do you think the failure was due only to excessive load/heat, or were there any other clues to why it failed full-on?
Ripperton - Thanks also. About the same thing happened to the Electric Racing Team that I advise (I'm a teacher), when the students miswired the throttle on a PMC controller and the race car blasted into the side of the building. But that was due to a wiring error, not the spontaneous failure of the controller. I'm trying to learn if/when/how a DC motor controller could fail in a full-on state.