Input: blue shaft of oblique disk. Oblique angle: 30 deg.
Output: pink shaft.
Axes of three revolute joints intersect at one point.
The video shows the motion of the pink fork when the angle between the blue and the pink shafts is set at various values: 0 deg. ; 15 deg. ; 30 deg.; 60 deg.; 90deg.
At 0 deg.: the two shafts rotate at the same velocity.
At 15 deg.: transmission ratio: 1 but the output velocity is not constant.
At 30 deg.: transmission ratio: 2, the output velocity is rather regular.
At 60 and 90 deg.: the pink shaft oscillates.