Transverse radius rods
Where coil, torsion bar or air springs are used, which of course cannot locate the axle, other measures have to be introduced. Two such arrangements are illustrated in Figs 32.8 and 32.9, where transverse radius rods A, usually termed Panhard rods, are employed - to take the lateral loads - in conjunction with a single combined torque-thrust member B of the type illustrated in Fig. 32.6. With the arrangement of Fig. 31.8, the Panhard rod is parallel to the axle and therefore can have simple pivots at its ends. The advantage in Fig. 32.9 is that the Panhard rod is longer and therefore has less tendency to pull the axle laterally, as it moves up and down. On the other hand, its pivots must be rubber bushed, unless it can be arranged to lie parallel to the axle.