Anti Sway Bars 101 (LXi and LX)

[davidbrady]

That's right Ross, the XLII, and H3 Prevosts with IFS have steer and drive axle sway bars.

The downside of the Ridewell panhard rod approach is a choppy ride. The vintage (non-IFS) birds have the majority of lateral loads transmitted thru their panhard rods; the IFS-birds have the majority transferred thru their springs (assuming a Hadley active air setup). You can imagine how the ride is improved in the IFS-birds - lateral loads transferred thru the springs naturally soften and dampen the loads. Lateral loads transferred directly from the bus body to the tires via panhard and suspension torque arms have very little if any softening or damping. Anyone who's driven a non-IFS bird can attest to the chatter and choppiness that's felt throughout the bus when driving on rough, cobblestone-like surfaces. We can make the suspension air springs as soft as we want in the vintage birds, but you'll always feel the direct load transfers thru the suspension torque arms and panhard rods.