When I entered the golf club fitting business about 15 years ago, there was no standard rating system for golf shaft stiffness. Nor was there a consistent, objective way to compare different models.

Shaft engineers define stiffness through an incremental flex profile down the length of the shaft, though proprietary details are rarely shared publicly. To bridge this gap, I developed an accurate 3-point EI bend profile measuring instrument, which is now utilized in quality control by several major shaft companies. Marketing discussion of golf shaft properties has moved into using EI profiles to golfers. We are proud to have promoted the discussion of golf shafts from mythology to science.

AI has opened a new era in what we can present here. Our first step is giving our subscribers a page where you can compare three shafts in the database to each other. The ability to compare shafts has been requested often and we can now make it available. This page will develop over the next few months. We welcome your comments and feedback to guide this process.

The Golfer+ subscripton grants access to this page. It is in development and currently is limited to driver shafts. Golfer subscribers can upgrade, advanced subscribers have this page included in their subscriptions.

Detailed documentation, data visualizations, and full background information can be found in the referenced source documents. Today, Golf Shaft Reviews provides thousands of uniform, unbiased measurements to help golfers and fitters see past marketing jargon and optimize equipment choices.

Supported entirely by subscriptions with zero advertisements to maintain absolute integrity, this site relies on reader support to fund ongoing testing and database expansion. Explore, the TECHNOLOGY MENU  to begin mastering modern shaft design.

Follow DevotedGolfer on Facebook to be advised of new posts.