How a Differential Gear Works Post author:HFM Post published:April 14, 2013 Post category:Brain Food Posting this for Stephanie, because I know she’ll want to watch it. Tags: automotive, differential gear You Might Also Like Paper Airplanes December 13, 2002 Otto’s Lighthouse December 10, 2001 Gen Con Writer’s Symposium 2013, Saturday in Review August 20, 2013