• the sub-power source of the torque fuel consumption up by charging and discharging the moment Chevalier series. I have further evolved corresponding to the high current and high-speed rotation. the Chevalier boost. Supports and instantaneous current of the boost turbo is used. also surge voltage generated during running. It is compatible with large and low-resistance. to reduce the time lag moment of throttle operation. I show a very high effect in the entire speed range. It is also effective for heat generation measures such as ESC · motor and batteries in addition.