Abstract: A vehicle combining the attributes of a tractor and a utility vehicle includes a three point linkage and other locations to which a plurality of attachments for performing grooming or working operations on a ground or turf surface may be couple. The vehicle includes a front mounted engine, a mid-mounted operator compartment and a rear mounted bed or box. A PTO shaft and/or a hydraulic power system of the vehicle power attachments that require power. A control system and a visual display and data entry device linked thereto are provided for allowing an authorized person to setup, store and thereafter use an operational profile for each attachment that is to be coupled to the vehicle. In a rate dependent attachment, the control system maintains the ground speed and the attachment implement in a fixed ratio. A down/up control is used to signal the start and end of an operational sequence to the control system.

Abstract: A torsion suspension system of the present disclosure includes a vehicle frame and a bar group rotatably coupled to the vehicle frame. In an embodiment, the bar group includes a bolster tube. The bolster tube has an opening through an elongated side of the bolster tube. A torsion bar is positioned through the opening and has opposite ends extending outward of the opening. A plurality of elastomeric cords are positioned adjacent the torsion bar in the opening. The cords are sized to resist and dampen relative rotation between the opening and the torsion bar. The opposite ends of the torsion bar couple with the vehicle frame.