Bearing Edges -- Drum Sound Physics Part II

In the second installment of this series on drum sound physics I discuss bearing edges and their affect on a drum's performance. Let's see if I can't distill this topic down to the important bits. Come join me!! 0:00 Introduction 2:11 Bearing edge definition and purpose 6:55 Keeping it simple -- two basic types of edges 9:50 Sharp edges 12:24 Round edges 17:10 Roundover edges 20:43 Single cut edges 21:41 Dual/counter cuts 22:13 Effect of edge angle on 'event horizon' 27:05 Effect of edge angle on drum shell mass 28:53 Conclusion Part One of this series (dealing with mass of a drum shell):    • That's Not What I've Been Told!  Drum Soun...   Mike Mangini drums in ultra slow motion:    • Time Warp Drummer (HD)   (point of interest starts at 4:24). Graphics used for teaching in this video came from: Modern Drummer, Sept/Oct 2013 issue of Drum Business, https://www.moderndrummer.com/2014/12... Play Drums By Ear, Drums And Hardware, Bearing Edges, Nov. 24, 2017, http://playdrumsbyear.net/blog/drums-... Rob Stapleton, PD Good’s Builder’s Manual, Bearing Edges, Dec. 20, 2009, http://pdgood.us/drumshed/bearingedge...