Abstract: A tracked vehicle that includes a mechanism for positioning the cab assembly and any loads supported by the cab assembly forward or rearward along the tracked chassis so that the weight of the cab assembly and load is more evenly distributed onto the earth contacting surfaces of the tracks of the tracked chassis and thereby minimize the chance of the tracked vehicle becoming bogged down.

Abstract: A light weight track drive mechanism that provides a large track drive surface area while maintaining a low weight to track contact surface area ratio so that the track drive could operate on soils with low support qualities. In addition, the track drive system is provided with high ground clearance so that fewer obstacles may prevent the track drive from moving around as needed.

Abstract: An improvement to a delimber system having a delimbing unit including cutting elements, for cutting limbs extending from a tree trunk, and a tree trunk loader mechanism, for pulling the tree trunk of a tree to be delimbed through the delimbing unit such that the limbs extending from the tree trunk are severed from the tree trunk by the cutting elements. The improvement includes adding a base frame; a slide carriage mounted between the base frame and the delimbing unit such that the delimbing unit is slidable with respect to the base frame between a forward delimber position toward the tree trunk loader mechanism and a rearward delimber position away from the tree trunk loader mechanism; and an impact assembly mounted functionally between the base frame and the delimbing unit, the impact assembly including a force generating mechanism for generating a force transmitted between the base frame and the delimber unit to force the delimber unit into the rearward delimber position.