Hi Paul,

The difference between one plane and two plane is about where the arms and hands go in the swing.

One plane swing refers to swinging the arms around the body. The arms and the body swing on the same plane - hence one plane.

In a regular (classic) swing, the body goes around, and the arms go up and down.

To feel the difference:

One Plane Swing: Bend over more at address (think almost 45º), weld your lead arm to your chest and turn your shoulders around your spine. Downswing - keep the arms 'de-energized', and turn the shoulders back around the spine. Don't dip!

Two Plane Swing: Stand more upright at address. Your arms have to feel alive, as they pick the club up on the backswing, and keep the club in front of the body as much as possible.

If you feel as though the club goes 'way behind you', you're most likely swinging one plane.



Pnearn's got a pretty good take on the One Plane Swing - including the main difference (where the arms go), and swing faults (lateral movement).

Arms and Hands
One Plane Swing: The arms and hands go beside the body (and in some cases, behind).
Two Plane Swing: The arms and hands stay in front of the body (ie between the body and the target line).

Hips
One Plane Swing: The hips should stay still going both directions - both back and through.
Two Plane Swing: The hips should be still going back, but some lateral movement towards target on the downswing is expected and encouraged.

Spine
One Plane Swing: The spine should be pretty straight. The 1PS is a wide swing, and spine tilt adds un-necessary width.
Two Plane Swing: The spine should be tilted. This helps to keep the body behind the ball, and adds width to the swing.

I hope this helps.

__________________
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