Torque Arm + 4 Trailing Links And Birdcage + Watts Linkage

The four trailing links are connected to the axle with a birdcage. The birdcage is axially located and free to rotate on the axle tube.

The axle is located sideways with a Watts linkage and vertically with a link from the torque arm to the chassis.

The Watts linkage can be either “axle mounted” or “chassis mounted”. This refers to the location of the Watts lever pivot axis.

Axle mounted Watts link pivot.

Seven chassis mounting points; four for the trailing links, one for the torque arm link, and two for the Watts links.

Seven axle mounting points; four for the trailing links (on the birdcage), one for the the torque arm link, and two for the Watts pivot, one of which is a reference point to determine the pivot axis.

Chassis mounted Watts link pivot.

Seven chassis mounting points; four for the trailing links, one for the torque arm link, and two for the Watts pivot, one of which is a reference point to determine the pivot axis.

Seven axle mounting points; four for the trailing links (on the birdcage), one for the the torque arm link, and two for the Watts links (on the axle).