Align the installation reference marks on the propeller shaft and yoke and install the propeller shaft.
Nothing seems to be wrong with the propeller shaft.
Different nacelle with deeper ross-section and intake over propeller shaft.
This accommodates any effective change of length of the propeller shaft as the rear axles move toward or away from the car frame.
There is another gear position, reverse. In this position, the propeller shaft is made to rotate in a reverse direction so that the car goes Backwards.
This avoids the use of a traditional propeller shaft and puts the propellers in a clear flow of water, which greatly improves efficiency.
