An axle rotates and a disk spins.
Geometry and mass is preset to ensure no need for scaling.
Sliders determine the angular velocities.
The angular velocity vector in the disk frame is pink.
The angular momentum vector in the axle frame is blue.
The angular momentum vector in the disk frame is light blue.
The angular velocity vector in the disk frame moves on the yellow cone.
The angular momentum vector in the axle frame moves on the pink cone.