[jon-s]

Our robot is wider than it is long (27 x 37). The distance between the centers of the wheels lengthwise is about 17-18 inches. The wheels are approx. 30 in apart, widthwise. The wheels are directly driven by the cims, with no chains connecting them - the wheels turn independently. Our chassis is a folded metal box with an open top. We're not sure we'll be trying to climb the barrier.