I have ran mine like this since I bought the car. I ran my esc in the battery tray till yesterday when I talked to Ryan Cavalieri at the Portland race about issues getting the rear of my car to transition in corners with my front more balanced. He suggested raising it up on a mount across the bottom of the shock tower saying it would be magical in the difference it made. After raising it the car has ran faster and more consistent than I have ever been able to drive it with the esc in the battery tray. I noticed the rear of the car now follows the front way better around corners with a lot more speed.