Frank, you forwarded my post correctly, thank you very much.
Since I'm not a professional expert, please read the following without guarantee of accuracy.
Regarding the text in the blog in front of my post:
I did not think so far that when the wheels are in a straight position, it is absolutely necessary that the cardan shafts are horizontal - in relation to the wheel position. In my opinion it is important that the forks of each cardan shaft and in connection to the next cardan shaft must be "in line" as described in my post. And exactly this as also in the text in front of my post in the blog was not the case with my car when you consider the first UJoint behind the steering wheel.
The job of the correctly connected cardan shafts is that the angular speed vs. the torque are evenly balanced/compensated so that the movement is smooth at any point of turning the wheel. For this reason the movement is always even, regardless of whether the forks of the first shaft are aligned exactly horizontally when the wheels are running straight. I hope I am able to write this in a reasonably understandable way.
On the other hand it is not a deterioration if you pay attention to the alignment of the Ujoints when the wheels are running straight. Maybe there is something I didn't pay attention to. But I think it should not make a difference. The important thing is that the Ujoints are all correctly connected to each other as a whole system, regardless of any initial alignment in terms of wheel position.
Edited:
(When I took the photos of the first and second Ujoint the front wheels were not exactly straight ahead. It was a coincidence that the forks were horizontal).
Last edited by Heinz; 08/02/20 12:31 AM.