And since we already have the servo control board inside, we can actually replace the steering actuator control with a full blown micro servo using the already existing e-sky servo as motor drivers. This is done by connecting the motor and the pot that is built-in on the servo. Both actuator driven and servo driven steering mechanism can provide full proportional control. However, if you have access to a very small servo for your micro rc car,why not mount that one instead ?
Here she is again in action;
Proportional control tests done on the floor for both steering and throttle ...
and a good ol table top run also testing the proportional control;