Your rover's drive train is
the part that transfers power from its motors to the ground to
move forward and backward. You must decide whether
to use wheels, tracks, or legs, how much ground clearance you will
need, and what gear ratio will provide the best balance of
speed versus power.
How many wheels are best?
Each additional wheel adds weight, but also adds more
Will you power all of the wheels
(like a four wheel drive SUV) or only some of them. Powering
all of the wheels adds maneuverability, but also adds complexity and
weight because you need to use additional gears, rubber bands, or
chains to get power to each wheel.
6 wheel swamp buggy
6 wheel Mars Expedition Rover
Is a half-track better than using only tracks or wheels,
or is it a compromise that is just more complex and heavier?
Bulldozer Notice that
the gear that powers the track is up above the other wheels.
This provides better ground clearance.