Track apparatus incorporating non-pneumatic wheels

A track apparatus having a frame, the track apparatus mountable on a rotatable axle of a vehicle, comprising:

• a continuous flexible track having an upper length and a ground-engaging lower length and including an inner surface;
• a drive wheel mountable to the rotatable axle of the vehicle for rotational movement therewith, the drive wheel engaging the inner surface of the flexible track along the upper length to drive the flexible track in response to rotation of the axle of the vehicle;
• a leading bogie assembly supported by the frame and having a generally solid, leading bogie wheel engaging the inner surface of the flexible track along the lower length, each leading bogie wheel having a plurality of voids therein so as to allow the leading idler wheel to be resilient in response to an external force thereon;
• and
• a trailing bogie assembly supported by the frame and having a generally solid, trailing bogie wheel engaging the inner surface of the flexible track along the lower length, each trailing bogie wheel having a plurality of voids therein so as to allow the trailing idler wheel to be resilient in response to an external force thereon.