Abstract: Interchangeable track systems for interchangeable deployment with vehicle wheels on a forestry harvester vehicle having a front axle and a rear axle may include a pair of front roller frame mount arms and a pair of rear roller frame mount arms configured for mounting on the front axle and the rear axle, respectively. A pair of front track assemblies and a pair of rear track assemblies may be configured for removable mounting on the pair of front roller frame mount arms and the pair of rear roller frame mount arms, respectively. Each of the pair of front track assemblies and the pair of rear track assemblies may include an elongated roller frame configured for pivotal attachment to the corresponding one of the pair of front roller frame mount arms and pair of rear roller frame mount arms. A front idler roller and a rear idler roller may be carried by the roller frame. A track may be trained on the front idler roller and the rear idler roller.

Abstract: A track drive assembly for attachment to a vehicle having an undercarriage, the assembly including a continuous loop track having an interior space; a plurality of idler sprockets within the interior space; a chassis interconnecting the idler sprockets, the chassis having front and rear ends; a drive sprocket within the interior space, the drive sprocket overlying the chassis; “Y” bracket having a front “Y” arm, a rear “Y” arm, and a cylindrical “Y” column, each “Y” arm having a distal end; and a front fastener for attaching the distal end of the front “Y” arm to the front end of the chassis and a rear fastener for attaching the distal end of the rear “Y” arm to the rear end of the chassis, the front and rear fasteners securely mounting the “Y” bracket upon the chassis.

Abstract: A retrofit assembly for conversion of a wheel driven vehicle to track drive, the vehicle having an undercarriage and left and right final drive mounts, the assembly incorporating left and right setback arms attached to and extending rearwardly from the vehicle's left and right final drive mounts; a “U” bracket having left and right “U” arms, the “U” bracket being fitted for laterally spanning the vehicle's undercarriage, wherein distal ends of the left and right “U” arms are fixedly attached to rearward ends of the left and right setback arms, and wherein forward ends of the setback arms are fixedly attached to the vehicle's left and right final drive mounts; left and right final drives respectively fixedly attached to the rearward ends of the left and right setback arms; and left and right sprocket driven tracks, wherein the track's sprockets are fixedly attached to the left and right final drives.

Abstract: Interchangeable track systems for interchangeable deployment with vehicle wheels on a forestry harvester vehicle having a front axle and a rear axle may include a pair of front roller frame mount arms and a pair of rear roller frame mount arms configured for mounting on the front axle and the rear axle, respectively. A pair of front track assemblies and a pair of rear track assemblies may be configured for removable mounting on the pair of front roller frame mount arms and the pair of rear roller frame mount arms, respectively. Each of the pair of front track assemblies and the pair of rear track assemblies may include an elongated roller frame configured for pivotal attachment to the corresponding one of the pair of front roller frame mount arms and pair of rear roller frame mount arms. A front idler roller and a rear idler roller may be carried by the roller frame. A track may be trained on the front idler roller and the rear idler roller.

Abstract: A retrofit assembly for conversion of a wheel driven vehicle to track drive, the vehicle having an undercarriage and left and right final drive mounts, the assembly incorporating left and right setback arms attached to and extending rearwardly from the vehicle's left and right final drive mounts; a “U” bracket having left and right “U” arms, the “U” bracket being fitted for laterally spanning the vehicle's undercarriage, wherein distal ends of the left and right “U” arms are fixedly attached to rearward ends of the left and right setback arms, and wherein forward ends of the setback arms are fixedly attached to the vehicle's left and right final drive mounts; left and right final drives respectively fixedly attached to the rearward ends of the left and right setback arms; and left and right sprocket driven tracks, wherein the track's sprockets are fixedly attached to the left and right final drives.