How do you explain TGM to experienced golfers????
 

It is amazing to me how hard it seems to get people to understand TGM. I don't know all of the ends and outs, but maybe some people here can help me.

Here are some questions that I get.

What makes all irons hook faced? I tell them it is the offset. Is that the reason?

People have a hard time understanding that back in the stance means that the ball is moved up plane. How do you explain this?

How do you get someone to understand that when the club strikes the ball the face is slightly open?

I know someone that says you must hit the outside corner of the ball to make it draw, how do you clear this up?

I have found that the easiest way to explain 'TGM' concepts and particulars is to show them, in most cases having them actually do the demonstration of these items.

Most have heard of the Inclined Plane and I found that can explain many of TGM concepts. The 3 dimensional golf stroke opens many peoples eyes and makes much of TGM understandable IMO.

Yoda does a Geometry of the Golf Stroke. In fact someone has posted copies of the diagrams.

If you can't find them, I will locate links to them later.

Understanding clubface control (Flat left Wrist), clubhead control (Clubhead Lag Pressure Point), clubhshaft control (Straight Plane Line) usually will get their interest up I have found.

Also if you are good at basic and acquired motion, that will impress those who are always interested in golf's short game.

Edit...

Here are two links, Bucket (of course who else) was the one who wanted them hosted.

http://martee.net/images/geometrycircle.jpg

http://martee.net/images/turnshoulder.jpg

Hope that helps..

The hookfaced position of a golf club is the clubshaft leaning forward if fully soled against its lie angle. Offset (I believe) is the clubface being closed when fully soled - so that the plane of the clubface and the plane of the lie angle are both not directly through the plane of the initial line of flight....

Let me try this again because i've been tossing and turning in bed thinking about this....

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.

Hope that clears things up as my other one was incomplete...

Mechanical Drawing 301
 

There you go! :eyes: :salut:

Mathew, were you planning on drawing this?

Bending Clubs
 

If one bends a club to alter the loft... the offset can be altered also. Bend to increase loft... Regressed Offset. Bend to decrease loft... Progressed Offset. This is from a book by Ralph Maltby (Golf Club Repair in Pictures).