Thanks Scotty.
Yes, I have purchased OOBOT40 http://www.oricomtech.com/oobot41.htm that does speed, reverse control and more. I will buy more powerful H-bridges if requires. Initially I selected Futaba S148 servos, but they do not look powerful to carry 5-10kg (20lb).
The issue is how to...
I am building a chassis for small robot car. Its max weight including load will be about 20 pounds; power supply upto 12V.
What is general way to define appropriate DC motor/servo for the car approximately? What motor characteristic is most important here?
Thanks,
Ek