[nighterfighter]

Not familiar with Python, but it should be as simple as either adding 2 new speed controller objects to your RobotDrive object, or if you aren't using a robotdrive object, just add 2 more motor controllers and address them like you do the other 2.

Edit: You might need to add a constructor inside of the robotdrive class that accepts 4 speed controllers, and assigns them to each side of the robot correctly.

Post your code?