Abstract: A split axle assembly for obtaining gage measurements of a track including a first wheel with a first split axle, a second wheel with a second split axle, a first bearing for rotatably receiving the first split axle, and a second bearing for rotatably receiving the second split axle, the first bearing and the second bearing being positioned inboard between the first wheel and the second wheel. In one embodiment, a sliding barrel device is provided. In another embodiment, the first bearing is received in a first bearing body and the second bearing is received in a second bearing body so that they are axially movable relative to one another. At least one linear guide is provided to allow axial movement of the first bearing body and the second bearing body relative to one another.

Abstract: A split axle assembly for obtaining gage measurements of a track including a first wheel with a first split axle, a second wheel with a second split axle, a first bearing for rotatably receiving the first split axle, and a second bearing for rotatably receiving the second split axle, the first bearing and the second bearing being positioned inboard between the first wheel and the second wheel. In one embodiment, a sliding barrel device is provided. In another embodiment, the first bearing is received in a first bearing body and the second bearing is received in a second bearing body so that they are axially movable relative to one another. At least one linear guide is provided to allow axial movement of the first bearing body and the second bearing body relative to one another.

Abstract: A method and apparatus for dynamically measuring a railroad track condition using a railroad truck with metal track engaging wheels as a reference platform from which a line of sight reference plane spaced from the track is created. Measurements are successively taken between the track and the reference plane as the railroad truck moves along the track.