Hi Walt and Alan,
I was able to get the mechanism assembled and moving in Dynamic Simulation R2011 (see attached).
What I did was:
1) Unchecked "Automatically Convert Constraints to Standard Joints" in the Dynamic Simulation Settings dialog
2) Convert constraints between the Grounded Rings and the CV couplings to create a Revolution and Cylindrical Joints
3) Create a welded group between the two ball bearings and the "inner ball"
4) Create a 3D contact Joint between one of the ball bearings and the "outer cage"
Next, I created a constant input rotational velocity of 720 degrees / second. Then, to resist this force and simulate a ramping up, constant, ramping down resisting load I used the input grapher in the cylindrical joint's rotational DOF.
In the output grapher, I chose to display the force in the ball bearing exerted between the ball and the cage. As you can see, the curve shapes look very similar.
Now, if you compare the output, it should also be a constant 720 deg/sec but it is not. It varies sinusoidal from ~700 => 750 deg/s. I believe this is because we only have 1-2 ball bearings and it is basically reduced to something similar to a Universal or Double Cardan Joint.
I hope this helps to give a starting point of how we can simulate this type of mechanism in DS.
I wish I could upload the assembly file, but it is now 2.7 MB. I used WinRar and spanned "disks".
Hugh Henderson
QA Engineer (Fusion Simulation)