[RC-Monster Mike]

What motor/controller do you currently run? The warrior controller work best with a receiver pack when the cell count is below 8 cells. The bec voltage cutoff is 5.5volts (under hard acceleration from a standstill, 6 and 7 cell pack voltage drops below this level, which cause the controller to cut motor power for the sake of maintaining servo power-a receiver pack bypasses this cutoff). I hope to have the 9918 controller back in stock next week.