Waist bend is Forward Bend of the Torso..Axis Tilt is Lateral Bending of the Torso caused by the hips translating or sliding laterally but in the confines of the Tripod while keeping the upper center the head/base of the neck stationary...thus tilting the plane of the shoulder turn....
There are also some that teach people to start off with a tilt of so many degrees(at setup). Others advocate the HANDS MORE AT MID-BODY, AND THE SHOULDERS AS LEVEL AS POSSIBLE AT ADDRESS(Reverse K vs. Tripod).
Also... do you see a correlation between those that bend over more at setup(down the line view), with less axis tilt(face on view), and those that stand taller, with more tilt(Mac O'Grady vs. Davis Love)?
-B. The downward force results from the action of Axis Tilt (Hip Slide-7-14) and/or Uncocking left wrist (2-P) if there is any of either. Otherwise, the Lever Assemblies are dropped, pulled or pushed downward from their fulcrums (6-A).
The BENT OVER MORE guy is the Hardy One Planer. He does not need much TILT.
IMO, Jim_0068 is 100% correct in his statement as is lagster. The golfer that bends more at the waist, ala the Hardy One Planer, will use the rotated shoulder turn and does not need nearly enough axis tilt to get the right shoulder on plane because the shoulders will naturally turn on a steeper plane at right angles to the spine.
Those that use the "standard" flat shoulder turn will need axis tilt to get the right shoulder travelling down the turned shoulder plane.
How much axis tilt is too much? That's easy. When the right shoulder starts dipping under the turned shoulder plane.
In this context, the death move for a "Hardy One Planer" (or anyone using rotated shoulder) turn is hip slide because that right shoulder will be immediately moved under plane.
Yoda briefly describes a "perversion of axis tilt" in one of the videos in the gallery where the right shoulder gets under the TSP.
The Rotated Shoulder Turn -- A Short Shot Procedure
Originally Posted by vjcapron
The golfer that bends more at the waist, ala the Hardy One Planer, will use the rotated shoulder turn and does not need nearly enough axis tilt to get the right shoulder on plane because the shoulders will naturally turn on a steeper plane at right angles to the spine.
Due to its Power limitations, Homer Kelley felt that the primary use of the Rotated Shoulder Turn would be for Putting and Chipping.
P.S. Love your avatar, vjcapron. Great alignments!