Angles and arcs
 

Is it correct to assume that longer arcs are shallower than short ones?

Not Necessarily.

Daryl are these views from the sky down or from face on? If the latter, I think this proves my assumption. I have trouble wrapping my mind around a shallow and short arc. If a club comes in steep, the arc would be short, and still short if it exits steep.

They're face on. But you make a good point. Angle of Attack. Divot depth is related to ball position vs. Low Point.

Theoretically, if you played a wedge and the ball was located at Low Point, then you wouldn't have a divot. Conversely, play a two iron with the ball 6" back and you'll have a divot.

I think if any club was chosen and contact was prior to low point did we would see a divot.

That being said, and disregrding ball position and contact, is there an instance where creating a longer arc produce a steeper angle of attack

Well. If you want to get into pulley size and all of that, then I'm sure someone can exaggerate a swing and have a steeper angle of attack with a Driver than when using a wedge especially if using an outside-in swing.

But if we limit the parameters to club length and an On Plane swing, then the longer the club, the shallower the angle of attack. But divot depth is strictly related to shoulder to ground distance and ball location to low point.

I'm with you the shoulder distance and divot depth.

I don't fully understand what you mean with pulley size

Pulley size refers to the Endless Belt Analogy. A small pulley being a late release of #2 Angle, left hand wrist cock with an associated increase in the Angle Of Attack.

Not sure I understand what you are referring to when you say "create a longer arc", since it could be done in several manners. Using Homers geometry and speak, the Radius of the swing is the distance from the Left Shoulder to the Low Point and is therefor a function of the length of the club used. For any particular club length or swing radius, the more Sweepish the Release the more the clubhead path approaches the maximum Radius, circumference, width associated with a zeroed out #2 angle, no left wrist cocking, constant full lever extension and minimal Angle of Attack.

So assuming a steady center, left shoulder (you cant draw perfect circles without a fixed center point) the Angle of Attack is a function of the length of the club shaft and the pulley size. Take a look at Hogan's backswing vs downswing here. Different angles, clubhead paths due to differences in his (Primary) lever extension going back (lagging takeaway) vs down (snap release).




http://www.lynnblakegolf.com/forum/a...d=126012341 0

Very clear. Thanks.

Luke had me goofing with Pulley Size via Float Loading this fall and I noticed a real difference in the Angle of Attack with the later release and ball flight.

The clubhead does actually describe a steeper path so its feels very downish and it is literally, but not in a way that would actually change the depth of low point, the position of the base of the plane or depth or your divot say assuming you get to full lever extension. There is only so far down you can go for any particular Radius/club assuming you dont move the left shoulder down. Lynn has said that most people dont go all the way down to full lever extension and therefor never fully acquire all of the Down and Out available to them. Leaving them somewhat short in the quest for Three Dimensional Impact.

Hogan and Moe didnt recock the club very quickly so their clubhead paths/ circles would be wide post low point. A bending left wrist or a quick recocking would have a steeper angle, narrower path when viewed from straight on. Im not sure why they did that or what the cause and effect of it was. Maybe just a little "hold off" fade move? Two guys who didnt want to go left? I dunno. Do you have any ideas?

Plane angle is a factor too of course when considering the steepness of the Angle of Attack. The flatter the plane angle the shallower the Angle of Attack. Off plane, over the top moves get more Vertical and therefore steeper. Those divots that you see that point way to the left are often pretty deep too, eh Slice? Man those things are uglier than the Leafs game in Boston last night. And that was pretty ugly. The game in Montreal on the other hand was a beauty eh? Hope you have Leafs tv hooked up down in Florida.