If you are using the new EMax GT2215/10 motor from the new C V2 power pack, be aware that it is mounted using a cross brace and the shaft runs through the firewall. If your battery goes in the top of the plane and sits in the power pod ( Mig 3 or my mustang with a mod ) , Rapid deceleration (earth brakes) can cause the Battery to shift forward and the shaft can punch a hole in the battery. I had added some form board between the battery and firewall hopefully to help the next time
