Abstract: A track tension system including a hydraulic cylinder coupled between a drive frame and idler of a track system, an accumulator and a hydraulic valve that controls flow between the cylinder and accumulator. The cylinder extends and retracts to change the distance between the drive frame and idler which increases and decreases, respectively, tension on the track system. The hydraulic valve can be opened to allow flow between the cylinder and accumulator, and closed to block flow between the cylinder and accumulator. Control factors can be monitored to control valve position. An overload pressure relief can allow flow between the cylinder and accumulator when the hydraulic valve is closed and pressure in the cylinder reaches overload pressure. An orifice can allow constricted flow between the cylinder and accumulator when the hydraulic valve is closed. A check valve can connect the track tension system to a vehicle hydraulic system.

Abstract: A wheel restraint system has a restraint body having a lower portion and an upper portion. The upper portion is connected to the lower portion by a pivot point. The upper portion has a clamping portion extending across at least a portion of an upper portion of an outer surface of the wheel to be restrained. The upper portion moves about the pivot point between a release position and a clamping position such that the clamping portion moves toward and away from the outer surface of the wheel to be restrained. An actuator moves the upper portion between the release position and the clamping position. An anchor anchors the lower portion to a surface.

Abstract: A wheel restraint system has a restraint body having a lower portion and an upper portion. The upper portion is connected to the lower portion by a pivot point. The upper portion has a clamping portion extending across at least a portion of an upper portion of an outer surface of the wheel to be restrained. The upper portion moves about the pivot point between a release position and a clamping position such that the clamping portion moves toward and away from the outer surface of the wheel to be restrained. An actuator moves the upper portion between the release position and the clamping position. An anchor anchors the lower portion to a surface.

Abstract: A snowmobile slide includes an elongated body having a first end, a second end, opposed sides, an upper sliding surface and a lower mounting surface. The upper sliding surface has more than one guide channel, with each guide channel extending between the first end and the second end. The lower mounting surface has a plurality of depending feet spaced at intervals between the opposed sides and between the first end and the second end. Spacing between the feet define an underlying flow area to allow for drainage and ventilation across the lower mounting surface.