Its a one motor one RCX bot, the motor powers both the front and back wheels.
The wheels are driven by a worm gear box to increase torque from the motor.
When I measured the horizontal and vertical distances the horizontal was 12-
inches and the vertical 13inches (I set that up before I ever built this robot,
I did check before I tested to make sure it was still the same). The surface
is a large piece of particle board with at least a foot more then the required
size in length and width. The dimensions of the robot is: 9.5inches long, 8-
inches wide and 8inches tall at the tallest point (the RCX). The front of the
robot is the side with the RCX and the motor, the motor does hit the incline,
however, the robot is able to push through until the wheels reach the incline
which at that point the motor is no longer hitting the incline. The back wheels
bend (shown in a picture) which helps to increase the friction and I think helps
the robot climb the incline. It is very slow, however, it does make it up. I did
not test it at any greater slopes, however, the slope I did test it at seemed to
me to be its max, it could just move up the incline.