[Yoda]

Yoda - you wrote-: "an orbiting Sweetspot is indifferent to the alignment of the Clubhead's sole (however long) at Impact."

I agree with you.

Good. I'm glad we got that out of the way.

That's why swinging a golf club using your orbiting sweetspot model would not work that well with a clubhead width >4" where the clubhead sole is non-cambered.

Fortunately, the club manufacturers figured that out more than 100 years ago. Those old long-nosed wooden clubs they played with in the 19th century didn't last long. Sure were great for Horizontal Hinging, though, when that nose whipped around the Sweetspot! And they figured out cambering, too. Most golfers swing somewhere between the Elbow and Shoulder Planes, and the cambered sole allows the average golfer to raise the Toe or Heel a bit at address to accomodate his natural swing tendency (7-6).

By contrast, the Anthony Kim swing model would work equally well with non-cambered soles . . .

For all golfers (not just Anthony Kim), this is true only if the club's Lie Angle is exactly right. That's because, as we've both agreed above -- -- the orbiting Sweetspot is indifferent to the Lie Angle. If you build the Club you have postulated in your post #139 above . . .



. . . with a Clubhead 18" long with its Sweetspot (X) located in the middle of the Clubface (9" from the hosel), and you do not adjust the Lie Angle (C-X) to accomodate that moved Sweetspot (and consequently Flatter Sweetspot Plane Angle), then Mr. Kim, in spite of his considerable talents, is going to have a very rough go of it. Unless the shaft is stiff as a crowbar (which would raise a whole new set of issues), there will be a terrific amount of clubhead 'droop' through Impact. That's because Mr. Kim's educated Right Forearm and #3 Pressure Point will do their dead-level best to stay in line with the Sweetspot (X) and the Clubshaft must comply. As a result, I suspect you would see a lot of 'toe deep' divots and shouts of "Fore right!!"