What is Spine and FLO?

Here at Corona Custom Golf, we strive to build the highest quality equipment available. As part of that process, we Spine and FLO each shaft we install.

It is common for shafts to have a "spine" or an area of the shaft that most resists bending. It will also have a "neutral bend point" or an area that has the least resistance. It is important to locate the neutral bend point and the spine as a part of the process of aligning the shaft.

Each shaft has a stable bending plane. That is the point where the shaft will stay on plane when in motion. To locate this, the club is clamped in a vice and the clubhead attached. With the assistance of a laser, the precise alignment is determined where the club stays on its 3 o'clock to 9 o'clock plane with no oscillation. That point is the Flat Line Oscillation or FLO.

The center of gravity of the clubhead will influence the FLO. We locate the stable bending plane with the clubhead installed to make sure is square to the clubface once the club is completed. This ensures the shaft has been assembled for the optimum performance, accuracy, and consistency.

If you have any further questions, feel free to contact us.