The NOVAK had a factory defect w/esc. It acts totally different now, and it's running great. It's no where near as powerful as the Feigao setup.

The second system has so far been found to have motor problems, and the controller was thermaled but unsure if the controller got damaged. The controller is still being checked out, the motor will be repaired or replaced.

The third system had a crappy solder job done by yours truely. I don't think that caused the issue, but it didn't help any. It's still being checked out.