RAPTOR stands for Rack-And-Pinion Truck OR. (I made up "OR")
This is my first rack-and-pinion vehicle. It has 6 wheels. There is a
motor in the back powering 2, 2 in the middle for stability, and the
last 2 are in the front, and are connect to the R-&-P. A motor
controls the R&P mechanism, and a light sensor tells the rcx how to
move the motor. There was supposed to be a motor in the front to
control the up/down motion of the shovel, and touch sensors to
detect when it was up/down, although I never added them or
finished the raising/lowering part. There is another motor in the
middle, but it doesn't do anything -- it was a mistake in the design.
By the time I realized what went wrong, it was to late to fix it. I also
never got around to programming it. So, it wasn't actually finished,
but I figured out how to build one. You may not be able to read the
writing in the picture.