A sixth impact law?
 

According to Cochran and Stobbs (Search for the perfect swing) there are 5 factors at impact which can affect the flight of the ball. In discussion with a few other pros recently a colleague suggested that a sixth law may have been overlooked by cochran. He suggested that loft at imact (dynamic loft) is another to join Face angle, clubhead speed, path, angle of attack, centredness of strike.
Any thoughts on this?

Wow! Certainly makes perfect sense to me.

Matt

Not read the book but I would say that loft at seperation and clubhead speed at seperation together with hinge procedure would be major factors -assuming the swing is on plane.

Neil
I am a recent golfing machine pupil but you would be very interested in this book as it was written by a man of science also. What is your view on if the clubface was closed by 2 degrees at impact (to a good path) but on separation it was now say square? Where/ what way would that ball fly?
many thanks

I think-it will fade right!Right?-depending on the loft of the club!

Anybody else ?
 

Anybody else have any views on this one .Seems to me to be hitting procedure with vertical hingeing(?)Would anybody want to do this on any swing ?:question: (or hit)

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Sounds like Angled Hinging. Hitters, by the way, often set up with the Clubface somewhat CLOSED. If the ball is coming off SQUARE at SEPARATION, AND THE PLANE LINE IS STRAIGHT, WITH CLUB ON PLANE, the ball should take off STRAIGHT, AND PROBABLY FADE A LITTLE.

lagster ,help me here, if the clubface is closed 2 degrees AT IMPACT,and is square at seperation I assumed it must be opening. If "a good plane " is what I consider to be inside aft quadrant FROM A SQUARE/ SQUARE setup, surely this is vertical hingeing?. I find it difficult to feel what is being described -it is the "closed at impact square at seperation'bit which is getting me:BangHead:

?????
 

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I think I see what you are saying. Angled Hinging is technically "simultaneous closing and layback."

If the Plane is good... I'm not sure a CLOSED FACE can hit the Inside Quadrant AT IMPACT. It would have to BE OPENING to get to SQUARE at SEPARATION.

This seems to me like an Action similar to what Trevino might have. If the ball comes off Square at separation, and the club is on plane... well.

Maybe some others will chime in.

Angled Hinging and Straight Ball Flight.

Clubface Closed at Impact, therefore Impact Point must be on Outside Aft (but Visual Inside Aft).

Clubface Square at Separation, Impact Point dead centre.

Simultaneous Closing and Layback refers to the Clubface Closing relative to the Plane Line.

Note that Impact Point changes between Impact and Separation. This doesn't happen with the Centered Clubface Motion of Horizontal Hinging.

That i can relate to ..I was probably putting too much interpretatin of my own into the initial question.Thanks

thanks fella's. So in conclusion you feel that the ball will move left to right in the air? I am not sure because the face was closed at impact and there is some research being done on this at the moment. A more normal situation would be the person who arrives at impact with an open face and during impact the face is closing while the ball is on it.
Another one for you. How do golf machine instructors teach ball below/ ball above the feet? The lie of the club/face tilt seems to be a big factor to me.
thanks in advance
Gordon Morrison

The more lofted the club the more directional deviation for uphill (going left)or downhill(going right)lies.

It is necessary to reorientate the sweet spot by lowering the hands on downhill lies and raising them on uphill lies. i.e shallow the clubshaft angle for downhill and steepen it for uphill. That, along with other standard set up adjustments, will get the job done nicely.

ball above /ball below
 

Not sure i agree IB. If you lower your hands when the ball is already below your feet it raises the toe even more off the ground and renders the toe and sweetspot almost unusable and vice versa on ball above. Are you trying to get the sole of the club in a more normal position in relation to the slope i.e flatter?
Explain more

Ball below the feet:
When the toe is down, the clubface is aimed to the right. Lowering the hands, will move the toe up, thus leveling the leading edge.

Ball above the feet:
When the toe is up, the clubface is aimed to the left. Raising the hands, will move the toe down, thus leveling the leading edge.

The leading edge should only be used to aim when the clubhead is soled flat. Otherwise it will not be in the same direction as the face of the clubhead. That is why you want the leading edge level.

ldeit

Nicely put, Lee.:)

Hi Gordon,

Lee nailed this one.:)

Hope you are keeping well in the frozen north.

If ball is below feet and leading edge on the same angle as the slop, you can either put up with the slice spin or compensate to make it go straight.