Ratchet Mechanism of Pin Gear 16 April 2018, 13:00 Sorry, your browser doesn't support embedded videos, but don't worry, you can download it and watch it with your favorite video player! Input: green crank . Output: yellow pin gear. Both go and back motions of the green crank make the gear rotate in the same direction. The greey bars push the gear. Gravity maintains contact between pawls and pin gear « previous mechanism Pin Gear Drive next mechanism » Disk Cam of Adjustable Output Stroke Length load comments Please enable JavaScript to view the comments.