The physics of this device is simply mind blowing. This continues from the theme Oh the science that moves me. Sorry no quote signs as the software that publishes to Blogger is super dodgy. Here I have met my match and the explanation is terrible. It was the sort of thing I had to do all the time when I was an Explainer at the National Science Museum http://lessonpeer.com/drhillteach/Torque%20Converters/Torque%20Converters.mp4 http://lessonpeer.com/drhillteach/Torque%20Converters/Torque%20Converters.mp3.mp3