The prototype testing is finally finished. After testing multiple motors and ESC’s, I am settled on the Neu 1920-1Y with the Castle Creations ICE160HV. This setup is pulling over 6000 watts of power with peaks of 160 amps. The new ThunderPower 45C packs barely get warm after a hard four minutes of flying, simply amazing! Great job ThunderPower! The Castle Creations ICE160HV stays under 100 degrees and provides data logging critical for setting up an efficient running E-powered helicopter. The Neu 1920-1Y (510kv) motor provides very efficient power, I was immediately impressed with the torque of this beast. If you are flying one of these 90 sized electric monsters, I highly recommend checking out the 1920-1Y. I will post some video of the E9 in action as soon as we get a break in the weather. For now, here are some pics…..