Offset wheels

Center line wheel

Fig. 4.28. Center line wheel: 1 - a

plane wheel

Diametral plane of the wheel is the longitudinal axis of the vertical bus to the axis of rotation of the wheels.

Offset wheel represents the angular deviation between the line connecting the points of contact of the wheels on one axis and perpendicular to the axis of symmetry, passing through one point of contact of the wheels.

Fig. 4.29. Wheel Offset: 1 - line of

angular deviation, 2 - axis perpendicular, and 3 - axis of symmetry, 4 - wheel contact point

The angle is negative if the right wheel is shifted to the front left wheel and positive if the left wheel is shifted to the front right wheel.

Offset wheel measured in degrees. If you know your gauge, then these data can also be expressed in units of length.