LynnBlakeGolf Forums - View Single Post - Inclined plane discussion Thread: Inclined plane discussion View Single Post #5 01-21-2009, 07:33 PM Jeff Senior Member Join Date: Feb 2007 Posts: 701 I thought that extensor action force was exerted by the right palm via PP#1 and not via PP#3 (which is used to trace a SPL and not the footline). Jeff. Jeff View Public Profile Find all posts by Jeff