The itsy bitsy spider also has an elevator to get individuals into the cockpit. The machine is powered by a 454 cubic inch chevy V-8 married to a modified TH400 trans coupled to two klune extreme under drive planetary gear boxes, uses a rockwell 2 1/2 ton military axle to supply power to the leg crank shafts, The final drive ratio is 125:1. The legs are supported on a 4 link system and uses 56 pivot points and 114 bearings..