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Date Posted: 17:46:17 06/13/00 Tue
Author: GeneO
Subject: Re: Sharing experiences
In reply to: Arista 's message, "Re: Sharing experiences" on 16:56:30 06/13/00 Tue

> > Pulling with the right only bends the left arm if you
> > let it.
>
> Pulling in the right arm bends the left arm whether
> you want it to or not.

I think you are not meaning "pulling in the right arm" in the same way that some others (including myself) are meaning it. It is indeed possible to pull in the right arm by contracting the biceps and pulling back with the shoulder and still keep the left arm straight. Try it!

> > As I said I extend with the left and pull
> > with the right to 'lever the club' (exert a torque).
>
> Torque is a rotational force about the long axis of
> the shaft. How do you push with one arm and pull with
> the other and create a rotational force around the
> long axis of the shaft?

Again, I don't think you're arguing the same point. Torque is indeed a rotational force, but around an axis which is not necessarily a shat. In most golf discussion the axis is the shaft. But the torque Peter is talking about is around an axis that is relatively perpendicular to the clubshaft (I believe the axis would go through the left wrist). One could argue whether this is truly a rotational force (I'd probably agree that it isn't), but the point is that keeping the left arm straight and pulling the right arm "in" will raise the club--I just tried it again right now to prove it to myself.

Of course, whether or not this motion is in any way conducive to a good golf swing is altogether a different question... :-)

> > I don't understand your right arm distance from right
> > shoulder statement. Your right elbow is at the end
> of
> > your upper arm. Isn't this a fixed distance?
>
> Your right arm bends doesn't it? Move your right
> elbow back and forth away from your body and watch how
> your right arm bends and extends.

This was probably just a case of Peter being pedantic (no offence intended Peter :-). If you are a normal human with all your original hardware, then effectively your elbow is at a fixed length from your shoulder (not allowing for growth, which should be irrelevant to this discussion as it doesn't occur at a rate that should affect the golf swing--at least in normal humans :-). Bending your elbow and moving it around may result in its distance from the torso changing, but relative to the shoulder it's always the same distance.

GeneO.

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