Figure 10. Car Starting and Stopping.
running on a flat surface. For the
reverse procedure, I placed the car at
the top of the ramp and let it travel
terminals. Figure 14 and
Figure 15 show how I
adapted it to a popular
model solar car.
Figure 12. Car Climbing a Ramp.
down. Figure 13 shows what
happens when the car descends the
The resistance is higher and the
underlying current and power are
lower — not by much but it is
measurable, nevertheless. I didn’t
have time to run anymore tests with
steeper ramps, but I’m sure that
equivalent results will prove that even
more power is needed to climb
Figure 13. Car Descending a Ramp.
to Other Model Cars
While the Hydrocar is a great
example of what can be done with
remotely monitoring live data, the
telematics boards can be adapted to
any number of model cars that you
or your kids have lying around
gathering dust. Just find the wires
going between the battery and the
motor, and bring them up to the
This is the last in our series on
fuel cells for the time being, so I
Model Cars to