The machine shown is a 4 wheel drive agricultural sprayer chassis that allows the rear wheels to track exactly where the front wheels have imprinted; this is done by means of centre pivot articulated steering.

 

The Ford tractor “donor vehicle” is adapted to give rear wheel “ground drive” through use of the tractors P.T.O. stub shaft, this gives true 1:1 shaft driven 4 wheel drive. Engagement is by means of a hydraulic clutch in the rear chassis.

 

The articulation hinge is also capable of giving “yaw” movement between front & rear rigid axles.