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SL Shaft Lab Golf Est. 2012 · Boise, ID
Field Notes

Field Notes

Notes from the bench — plain explanations of the shaft variables that shape ball flight more than most golfers realize.

Shaft Spine Alignment Explained

What flat-line oscillation testing actually finds on a shaft, and why orienting the spine consistently can tighten dispersion.

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Kick Point vs. Flex Profile

Why two shafts with the same flex rating can launch the ball completely differently once the bend location is factored in.

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Swing Tempo Ratio

Why the ratio between your backswing and downswing should set your shaft weight class more than your clubhead speed alone.

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Shaft Torque, Explained

What torque actually measures, and why lower isn't automatically better for every swing type.

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Static Loft vs. Dynamic Loft

Why the loft stamped on the head rarely matches the loft actually delivered at impact.

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Swingweight Isn't Total Weight

How two clubs can weigh the same on a scale and feel entirely different in the hands — and why that matters for fitting.

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Put This on the Board

Reading about shaft mechanics is a start — seeing your own numbers on the deflection board is where it actually clicks.