Originally Posted by dan_vector

With the much higher speeds of the brushless systems these days a high speed/torque digital servo is a must. I think you'll very quickly find that an S3004 will be outgrown within minutes! A good steering servo really is a must. The S3004 is very slow 0.2 through 60 degrees and only 4kg torque and plastic geared to boot and so you'll probably break the gears within a few laps.

If you search the forum there are plenty of threads already running on charger choice and servo choice and there are plenty of inexpensive servos that would do the job much better than the s3004!