We have some interesting ideas relating to RC controlled cars, boats and aircraft. We wanted to learn some more about these and specifically what the communications and servos look like.
RC control senior project (discusses RC communications) indicates turning is binary (left, right or straight) and speed is in discreet values. We would want finer control for our idea.
Demolition Derby RC Car 433MHz transmissions
RC NSX Special Edition Custom Transmitter and Receiver. We get the feeling there are no standards that manufacturers use.