Frog on a Scotch Yoke by Mr Cool Thu, 31 Oct 2013 cool022883frogscotch yokeyoutube Description Comments (2) Our friend Mr Cool has been working his creative magic again. He has posted this video of a frog powered by the scotch yoke mechanism. I love the clever way that the link and the back opens the mouth. Neat! Nice work Mr Cool! Thanks for posting. Related Comments (2) cool022883 October 31, 2013 at 4:43 pm thank you for putting it up thank you for putting it up on the site.i have been doing some of Keith Newsteads models and he uses simple links like that in his models.thats where i got the idea. david eldridge October 31, 2013 at 8:58 pm Frogtastic! Frogtastic! Comments are closed.