That is how it was working early on. We were tweaking the 4cell nimh settings that allowed it to run on lower voltages without a receiver pack. Quickly the setups became so aggressive with all the dynamic timing that the 1S battery voltage is being pulled to low early in the run. We started needing the 6v to run our brains and get full power from the 1S for the entire run. Otherwise we have to reduce throttle to stay alive, or keep the receiver alive since it dies first typically.