Word . . . consider the old weight on a string deal . . . weight is spinning round and round . . . then it flys off. Physics has it flying off at 90 degrees to the radius. So imagine if you tilted the axis of the whirling string so it was spinning around on an inclined plane. It still would leave at 90 degrees to the radius which would be OUT TO THE RIGHT.
The concept is the same in golf. The clubhead is the weight on the string. The force that you are generating would be at right angles to the radius. So anything back of lowpoint the force is OUT TO THE RIGHT. So design hook face into the club to DIVERT the force so you can hit the ball down the target line and not out to right field. Notice the longer the iron the less hook face . . the are designed to be played closer to low point.
Hope that makes sense . . . any correction would be good from any of the HEAVIES lurking.
OK Maybe this wont be a quickie after all. Sorry.
I am with you on the shorter irons being played further back of low point. I can see how being further back of low point they therefore have more out and down after impact. I get how the weight that flies off the string prior to low point flies to the right of low point, but dont get the relevance to a golf shot.
I've been looking at my irons for years now and dont see a hooked face. Where is it? Is it something to do with progressive shaft lean?
This is an oversimplication but give it a try: Replace your Clubhead with a tennis racket head (on the end of your Clubshaft). At Impact, the tennis racket head would drive the ball both Down and Out into the ground and to the right as Bucket explained. Note: the Sweetspot of the tennis racket is in line with the Clubshaft and the racket has no Loft. The Force is always Down and Out at Right Angles to the Radius. The Club manufactures would then have to add loft to the racket face, which would make it hit the ball further right (rotate the racket face clockwise in your hand to add loft). The manufacture now creates a Lie Angle by taking the Sweetspot of the racket Head out of line with the handle by giving it hookface. Now take you old Club, without the tennis racket on it, and hold the shaft parallel to the ground. Look at the face. Which direction would the ball go if the Plane of Motion were parallel to the ground? It is not going to the right.
Your job, if you decide to accept it, is to drive the Clubhead both Down and Out from Impact to Low Point, not toward the Target. The design of the Clubhead and Face is to divert that Down and Out Force to an on Target Force (Reference 2-D-0, first paragraph on page 24). You do your job and let the Club do its job. Don't do the Clubs job! Let it do what it is designed to do.
The amount of hook face varies from club to club. Mathew did an explanation on the intersection of Planes that goes into more detail than me.
Do a search and you should be able to find it.
Didnt want to use my Mizunos so I just cut the head off my wifes 5 iron and her tennis racquet too. Im sticking them together like a giant tennis racquet.
OK I get what your saying. Nice. OK. Out and down.
Hey this sort of relates to the dilemma I face when I have a say a pitching wedge from a severe side hill slope with ball way above feet. I grip down and adjust the sole to a more horizontal plane than the slope, so its still "loft" not "left" and then take more club given the chocking down and aim to the right to accommodate any remaining "left" , swing out and
Oh, oh her she comes,crap, oh she's pissed!. Gotta go.
OK Im back and apparently I now have an infinite amount of time to devote to golf. Ive added loft, Im just about to add a lie angle to the head, will this alone give it a hook face? The steeper the lie angle the more the hooked face?
Im close to enlightenment but not quite there. Is shaft lean a factor?
Keep it coming Im close, I've got lots of time and am all ears.
[quote=drewitgolf;52247]... The manufacture now creates a Lie Angle by taking the Sweetspot of the racket Head out of line with the handle by giving it hookface.....QUOTE]
This is my understanding of how hookface works. Clubhead COG is not in same plane as the face of the clubhead.
If that is correct then what is happening with the new drivers where COG is forever being moved further back away from clubface?
It occurs to me that assuming the shorter the club the more of back of low point it is played;
-the more out there will be after impact.
-the more down after impact
So if the face is aligned square to the target and the club is traveling out we have a draw or hook situation? Or maybe this just points out my confusion about clubface alignment too?
This is my understanding of how hookface works. Clubhead COG is not in same plane as the face of the clubhead.
If that is correct then what is happening with the new drivers where COG is forever being moved further back away from clubface?
This was posted by Mathew back in 2006. Get out a few businees cards to make your own Planes and follow along...
"Hookfaced position is when the initial ball flight plane runs directly vertical to the clubface plane and the lie angle plane whilst another plane can be made that is directly vertical to the lie angle plane on a line where the clubface plane intersects the lie angle plane which is also vertical to the clubshaft plane. To the degree that the clubshaft is moved around in a circle from - vertical to the lie angle plane - to towards the lie angle plane itself on the clubshaft plane is the degree it is hookfaced.
Offset is when the initial ball flight plane runs directly vertical to the clubface plane and the lie angle plane whilst another plane can be made that is directly vertical to the lie angle plane on a line where the clubface plane intersects the lie angle plane which is closed to the clubshaft plane. It is most likely that an offset club has a combination of hookface and offset.
Could you, or Mathew, explain Mathew's words in photo-diagrams or a video demonstration?
Jeff.
Jeff,
I appreciate your request, however, I am about as computer illiterate as it comes. Mathew on the other hand is a computer genius. Hopefully, he will post (Youtube?) when he returns. I am still trying to figure out why I can't view any video on You Tube .
Could you, or Mathew, explain Mathew's words in photo-diagrams or a video demonstration?
Jeff.
Perhaps a demonstration on a horizontal plane will help.
As in swinging a baseball bat, anything hit before low point ( which in this example is when the bat is perpendicular to home plate-second base line) goes out to the right.
Try this drill. Hold your right arm out in front of you at shoulder level, palm facing 'second base'.
Now move your arm back, so your palm is facing about half way between 1st and 2nd base (out to the right)
Without moving your arm, arch your right wrist so that the palm faces second base.
The amount your right arm is moved back is directly related to how much you have to arch your right wrist. In other words, the more out to the right, or 'up plane', the more hook face (arch need to get back to 'square').
The same is true on an angled plane.
Keep in mind, this drill has the arm representing the club's design, we want a bent right wrist in G.O.L.F.!
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