In my previous post I mentioned I am using a Castle Creations Phoenix 35 ESC. I use the 11 tooth pinion and a Align 11.1 2100mah battery. I use a li-po battery alarm available at http://www.heliproz.com/prodinfo.asp?number=335444 and have that set at 9.0 volts. I have the ESC set at high governer and I am getting 8 1/2 - 9 minutes flight time sport flying. I have my radio throttle set at 85% on a JR 7202. I usually get 3.1 volts per cell on the charger.