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Inertia Effect.
- Master - (Changed
- 02/11/2007)
During the back swing movement the rotational movement of the
shoulder/arms-unit basically "push" the arms to the end
of the back swing movement and therefore there is no inertia effect
upon the arms during the back swing movement.
However by keeping the arms totally passive to the movement
of the shoulders, as you transfer the weight of your body onto the
left leg in order to begin the down swing movement, the "inertia
effect" becomes apparent.
For example, as you transfer the weight of your body on to the
left leg and simultaneously begin to rotate the hips in an anti-clockwise
motion, because of the "inertia effect" there is a split
second delay before the shoulder/arms-unit can react to the movement
of the hips.
Once the "inertia effect" has been absorbed between
the initial of the hips and the shoulder/arms-unit, the shoulders
will then begin to rotate into the down swing movement.
However because the "inertia effect" is always present
during the down swing movement, as soon as the shoulders begin to
rotate back to the original address position, there is a further
delay before the arms begin to move.
And finally it is the "inertia effect" on the golf
club which enables the very good golfer to use a combination of
the rotational movement of the shoulders and the correct use of
the shoulder muscles to achieve the maximum velocity of the clubhead
moves through the contact area.
Therefore as you can see, it is vitally important to keep all
of the working parts of the body passive to each other if you wish
to carry out the perfect golf swing.
It is important to understand that the "inertia effect"
is hardly detectable within the golf swing, but nevertheless it
is still an important factor to take into account, because regardless
of how firmly you hold the shoulder/arms-unit together, as long
as you keep the arms passive to the movement of the shoulders, the
"inertia effect" will always be present.
Clubhead.
This "inertia effect" becomes even more important
when you apply the principle to the actual clubhead.
When you are using the shorter irons such as the pitching wedge
or the sand iron, the delay caused by the "inertia effect"
before the clubhead catches up with the hands at the impact position
is very small, so only a small adjustment to the rotational speed
of the shoulders are required in order to correctly time the strike.
However as you start to use longer irons, such as the five
or six irons, the shafts also become longer, which means that due
to the "inertia effect", the delay time increases even
further before the clubhead can catch up with the hands at the impact
position. Subsequently you have to slow down the rotational speed
of the shoulders to compensate.
Finally, when you are using the longest club, the driver, the
delay caused by the "inertia effect", will have increased
even further before the clubhead can catch up with the hands at
the impact position, therefore it requires that the rotational movement
of the shoulders is slowed down even further.
So it is very important when making the down swing, that as
the club shafts become longer, you must take into consideration
the "inertia effect" in order to compensate for the extended
time delay, therefore it is vital that you slow down the rotational
speed of the shoulders accordingly.
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