Post by imperfectgolfer on Dec 20, 2010 0:21:39 GMT -5
Ringer loves this topic.
This is what he wrote at 3jack's forum.
"The right arm PULLS the club down too! It doesn't ONLY push, it also pulls the club down just as the left arm can. In fact I would go so far as to say it predominantly PULLS and isn't until the delivery position (Z6) at the soonest that it would be in a position to push the club at all.
The CG of the club is trailing the right hand and in fact there is an angle developed between the right forearm and shaft which is held onto for just as long as the lag of the LAFW.
Pull - to exert force upon so as to cause or tend to cause motion toward the force
In other words a pull is where the object is trailing the point where the force is acting upon it. So as long as our hands are ahead of the club's center of gravity, it will be by definition PULLING on it.
Easiest way to prove this is by taking your left hand off the club altogether. Now, from the top of your backswing down to delivery, is your right arm pulling or pushing the club? Since the clubhead is still in a trailing position it must be pulling."
I think that he is correct - if one's reference point is the COG of the club.
However, I never think of the COG of the club. My mental focus is on the grip. The left hand is primarily ahead of the grip and it pulls, and the right hand is primarily behind the grip and therefore it pushes. This applies mainly to the release of PA#2 and PA#3. When the club is parallel to the inclined plane in the early-mid downswing, and grip forces are pulling the club down the inclined plane, then the issue is more problematic - and this happens during the release of PA#4. I still prefer to think of the right hand pushing because I think that it exerts most of its force at PP#1, and it pushes down on the left thumb at PP#1 so that it can help the left hand pull the club down the surface of the inclined plane. Most of the force releasing PA#4 in a swinger is actually due to i) a pivot torque force combined with a ii) left shoulder girdle torque force. I don't think that a swinger actually uses the right arm to release PA#4, and if he did add some force to the PA#4 release action, I still think of it as a push force because the right palm is above-behind PP#1. I personally think that a swinger should not be using the right hand's 3rd, 4th and 5th fingers to pull the club down the inclined plane - other than the amount of force needed to keep up with the grip end of the club.
Jeff.
This is what he wrote at 3jack's forum.
"The right arm PULLS the club down too! It doesn't ONLY push, it also pulls the club down just as the left arm can. In fact I would go so far as to say it predominantly PULLS and isn't until the delivery position (Z6) at the soonest that it would be in a position to push the club at all.
The CG of the club is trailing the right hand and in fact there is an angle developed between the right forearm and shaft which is held onto for just as long as the lag of the LAFW.
Pull - to exert force upon so as to cause or tend to cause motion toward the force
In other words a pull is where the object is trailing the point where the force is acting upon it. So as long as our hands are ahead of the club's center of gravity, it will be by definition PULLING on it.
Easiest way to prove this is by taking your left hand off the club altogether. Now, from the top of your backswing down to delivery, is your right arm pulling or pushing the club? Since the clubhead is still in a trailing position it must be pulling."
I think that he is correct - if one's reference point is the COG of the club.
However, I never think of the COG of the club. My mental focus is on the grip. The left hand is primarily ahead of the grip and it pulls, and the right hand is primarily behind the grip and therefore it pushes. This applies mainly to the release of PA#2 and PA#3. When the club is parallel to the inclined plane in the early-mid downswing, and grip forces are pulling the club down the inclined plane, then the issue is more problematic - and this happens during the release of PA#4. I still prefer to think of the right hand pushing because I think that it exerts most of its force at PP#1, and it pushes down on the left thumb at PP#1 so that it can help the left hand pull the club down the surface of the inclined plane. Most of the force releasing PA#4 in a swinger is actually due to i) a pivot torque force combined with a ii) left shoulder girdle torque force. I don't think that a swinger actually uses the right arm to release PA#4, and if he did add some force to the PA#4 release action, I still think of it as a push force because the right palm is above-behind PP#1. I personally think that a swinger should not be using the right hand's 3rd, 4th and 5th fingers to pull the club down the inclined plane - other than the amount of force needed to keep up with the grip end of the club.
Jeff.