Pitch and roll are rotating around same axis on a ball joint.
In the video I have locked the Ball Joint in the Yaw axis. I then lock the Pitch and the Roll at separate times. You can see clearly that the motion is not on the same axis. If you are arguing the motion goes through the same pivot point, that is correct but the motions are not on the same axis. Model is attached if you want to try it yourself.
John Hackney, Retired
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see message #5 in this thread: ball-joint-mysteries .
This one also has detailed information: scratching-the-ball
Jeff Strater
Engineering Director
I apologize for the late reply, I had to attend a get-together and I am just getting back to your post. The reason you are getting two axis identical, in my opinion, is the Ball Joint was placed on the midpoint of the edge of the two components. I replaced the joint with one on two points, basically the same position, just points not on the edge.
When you are test any joint, using the Drive Joint command gives you a better picture. Model I used in the video is attached.
John Hackney, Retired
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I am at a loss, using my defined method I get three axis every time. I hope someone else can give you more insight into your issue.
John Hackney, Retired
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