Figure 2.1. Cardan shafts: A - Two-section propeller shaft with standard front hinge, B - Two-section propeller shaft with Guibo type front elastic hinge.
At the beginning, middle and end of the cardan shaft, hinges are installed that ensure the movement of the rear axle during suspension vibrations and slight vibrations of the power unit within the mountings. Some models use a Guibo rubber mount in place of the universal joint at the front. Depending on the model and transmission type, a constant-velocity joint may be installed in the center instead of the universal joint. The cardan joints are sealed and maintenance-free, but the center support and rubber joint can be replaced with a new one.