Input: pink crank of radius R.
Output: green bar.
Output motion depends on distance A between two grey bearings.
The video shows the motion of the green bar when A is set at various values:
When A is smaller than R: the green bar rotates. Transmission ratio: 1 but the output velocity is not constant.
When A = R: the green bar rotates. Transmission ratio: 2, the output velocity is constant. There are unstable positions when rotary axes of the green bar and the orange slider are in line.
When A is larger than R: the green bar oscillates.