[Andy Baker]

This issue has been debated many times on this website. There is no reversing setting. The motors are wound in order to provide maximum power in one direction (the forward direction on the drill is where the power is needed).

Here are the various solutions:
1. Change your mechanical design so that both motors run to same direction to propel your robot.

The positive outcome of this effort would be that the 'bot would run straight.
The negative is that it takes some effort (more complexity, weight, efficiency loss, etc.) to make it work.

2. Create software which limits the forward-rotating motor in order to match the speed of the motor moving in reverse.

3. Deal with it and let your drivers just get familiar with driving in slight arcs.


If you can make an extremely simple and elegant solution to make a mechanical design as said in #1 above, then do that. But, whenever you add mechanical complexity you are injecting chances for breakdowns. If this mechanism is complex, then scrap it and go with #2 or #3. Many teams do well with "dealing with it" and letting the drivers simply get familiar with the way the robot drives.

Andy B.