rhw - form III levers are not as effecient. They offer less mechanical advantage vs a form I or form II. In fact, they offer less (no) mechanical advantage by definition. A wheel or screwdriver offer mechanical advantage.
I'm with you on maintaining a flat left wrist through impact/separation however.
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http://encarta.msn.com/encyclopedia_761562252/Machine.html
From the section on levers: class III
C Class 3 Levers
A class 3 lever has the fulcrum at one end, the load at the other end, and the force in the middle. The human forearm is a class 3 lever. The elbow is the fulcrum, and the muscles of the forearm apply the force between the elbow and the hand. The class 3 lever always has a mechanical advantage of less than 1, because the load travels a greater distance than the force travels. Consequently, the work requires more effort than would ordinarily be needed. Although they boost the amount of effort needed, class 3 levers are useful for increasing the speed at which a load is moved. A baseball bat and a broom are also examples of class 3 levers, with which a greater effort results in a smaller load moving at a greater speed.
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So IF speed is the goal, a class III lever is what you would want
However, you want MASS and speed, not just speed. Simple example, would you rather be hit by a person running at you at 10 mph, or a semi moving at 10 mph?
In golf, we want MASS. It is a big part of FORCE. The reason that 'slow and heavy' is a good swing feel is that it represents a swing with MASS and not just speed.
Of course how we describe the motion is a matter of perspective, but the results of that motion are always, and will aways, be a matter of physics, geometry and anatomy.
So in looking at sustaining the line of compression, applying FORCE in an efficient way, why would you use a class III lever? You want a machine, you want mechanical advantage, but a class III lever is the opposite. ONLY if you want speed over mass would you desire a class III. Yet we want FORCE so MASS is very, very important.
Slow and heavy, "keeping the 7" - are ways of swinging with MASS. Effortless power because you are using physics, using a lever, a class I lever to move the hands. There are, however, multiple levers involved. Those of the human body. Anatomy.
I'm with you on maintaining a flat left wrist through impact/separation however.
-------------------------------------------
http://encarta.msn.com/encyclopedia_761562252/Machine.html
From the section on levers: class III
C Class 3 Levers
A class 3 lever has the fulcrum at one end, the load at the other end, and the force in the middle. The human forearm is a class 3 lever. The elbow is the fulcrum, and the muscles of the forearm apply the force between the elbow and the hand. The class 3 lever always has a mechanical advantage of less than 1, because the load travels a greater distance than the force travels. Consequently, the work requires more effort than would ordinarily be needed. Although they boost the amount of effort needed, class 3 levers are useful for increasing the speed at which a load is moved. A baseball bat and a broom are also examples of class 3 levers, with which a greater effort results in a smaller load moving at a greater speed.
----------------------------
So IF speed is the goal, a class III lever is what you would want
However, you want MASS and speed, not just speed. Simple example, would you rather be hit by a person running at you at 10 mph, or a semi moving at 10 mph?
In golf, we want MASS. It is a big part of FORCE. The reason that 'slow and heavy' is a good swing feel is that it represents a swing with MASS and not just speed.
Of course how we describe the motion is a matter of perspective, but the results of that motion are always, and will aways, be a matter of physics, geometry and anatomy.
So in looking at sustaining the line of compression, applying FORCE in an efficient way, why would you use a class III lever? You want a machine, you want mechanical advantage, but a class III lever is the opposite. ONLY if you want speed over mass would you desire a class III. Yet we want FORCE so MASS is very, very important.
Slow and heavy, "keeping the 7" - are ways of swinging with MASS. Effortless power because you are using physics, using a lever, a class I lever to move the hands. There are, however, multiple levers involved. Those of the human body. Anatomy.
