Abstract: A work machine includes a drive wheel, a drivable track engaged with the drive wheel, a deformable spacer coupled to the drive wheel, and a secondary weight coupled to the deformable spacer. The deformable spacer facilitates oscillation of the secondary weight relative to the drive wheel to limit vibrations of the work machine.

Abstract: A work machine includes a drive wheel, a drivable track engaged with the drive wheel, a deformable spacer coupled to the drive wheel, and a secondary weight coupled to the deformable spacer. The deformable spacer facilitates oscillation of the secondary weight relative to the drive wheel to limit vibrations of the work machine.

Abstract: A vehicle cab noise suppressing system includes a cab interior panel having an opening exposed to acoustic noise in the cab, an acoustic resonator chamber, and a conduit communicating the resonator chamber to the opening. The resonator chamber is formed by a plurality of walls which are spaced apart from the interior panel and which are formed by a second panel. A third panel cooperates with the walls to enclose the resonator chamber. The chamber volume and the diameter and length of the conduit are chosen so as to acoustically tune the chamber to a noise frequency in the cab and thereby reduce noise in the cab.