This is the second of my part to make a ROBOT car. I hv got the idea now abt how to make a car. The question i m having is very much elementary.How can i increase the speed of the my car. It is a DC motor one----- the fwd/reverse motion as well as the left/right motion. I hv also got a ready circuit but the speed attained is low. Secondly the range of the remote control is less. Now hw can i increase that as well. If someone can explain me the working and mechanism of the Remotecontrol signal receiver,the components required in it and their role... i will be grateful.