
316 Chapter 16 • Unconventional Vehicles
when the front and rear wheels turn, the inner bogie stops as a result. Figure 16.5
should help to explain the concept.
Two rubber bands keep the polarity switches gently pulled back in the on
position.The pivoting axle of the rear wheel mounts a traverse axle, then, when
turned, pushes the inner switch to the off position (the left switch controls the
left bogie).
In the same picture, notice the touch sensor that detects the neutral position
of the steering system, the only sensor used on this robot.
A single motor operates the entire steering system. It’s placed in the bottom
part of the body, and connects to ...