When I entered the golf club fitting business about 15 years ago, there was not a standard rating system for golf shaft stiffness. Nor was there a way to compare golf shafts. This journal gives you a way to compare golf shafts with a uniform stiffness rating evaluation. Understanding the properties of a golf shaft which is your best fit is leads to a better game.

Describing golf shaft properties is not a simple task. Shaft company marketing developed terms, “kick point”, “stiffness”, “launch” and “spin” to describe shaft properties. These terms developed into a mythological language for describing golf shafts. Shaft engineers and designers define golf shaft stiffness as a profile, the change of stiffness down the length of the shaft. Many years ago a tour of a shaft company R&D lab enlightened my understanding of golf shaft technology.

That lead to me designing and manufacturing a very accurate shaft stiffness measuring instrument. It is now used by several shaft companies. I have been writing about shaft properties for 10+ years. The term EI profile, is now part of the discussion some shaft companies are having with golfers.

If you want to understand golf shafts you have come to the right place. Here you can learn why some shafts work better for you than others. And more important, how to recognize the properties of shafts that make you a better golfer. Please share your comments about what you experience with the shafts reviewed.

A system which defines the distribution of flex down a golf shaft is how most shaft companies design golf shafts. But the information, for fear of giving that information to their competitors, is not shared with the public. It took a few years to refine my measurement instrument and many, many years to acquire and measure the popular golf shafts. This journal provides you with uniform measurements of thousands of golf shafts. If you are new here, the TECHNOLOGY MENU is a collection of articles that will guide your understand golf shaft design.

This journal is entirely supported by subscription. To insure my integrity, there are no ads on this site, that allows me to remain unbiased in the articles. If you believe as I do, that your golf shafts are essential to good golf, please subscribe. Acquiring shafts, measuring them and writing articles takes a great amount of time. Your subscription underwrites the time and resources needed to keep this journal going and growing.

This video is a detailed discussion about golf shafts stiffness and the history of how they were measured and marketed. It is one of many videos about golf equipment technology and golf club building on my youtube channel, Devoted Golfer.

It took years to understand shaft measurement and many more years to accumulate a meaningful database of shaft measurements. The magnitude of that accomplishment did not occur to me until a golf shaft company owner said it to me. Several golf shaft companies now use the EI measuring instrument I designed and manufactured. If you are a golf professional and would like access to more data there are two choices. Golf Professional subscribers get access to a larger set of data and individual profiles of all the shaft model weights and stiffness variations that were made available. Fit2Score Affiliates have access to the entire database through Excel. To hear a podcast interview I did about golf shafts with Tony Wright, a Fit2Score Software Affiliate, Click Here.

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Fujikura Ventus 2024 Golf Shaft Review

Fujikura Ventus Blue VeloCore+ Golf Shaft Review

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Builder
The Highlands Performance Golf Center, Carrollton Texas 
Golf Digest Certified America’s 100 Best Club Fitter

If you are familiar with the Fujikura Blue Velocore released several years ago, you already know the 2024 Ventus Blue Velocore+.

To continue reading this section of the review, you must be registered at a higher level membership.
Russ

Mitsubishi Diamana WB Golf Shaft Review

The Diamana WB returns the white board profile closer the the first few generations than I saw is the last version, the Diamana W. I see a profile that is almost identical to the Tensei Pro White 1K.

To continue reading this section of the review, you must be registered at a higher level membership.
Russ

BreakThrough Golf Technology Brava Speedflight NRG Driver Shaft Review

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Builder
The Highlands Performance Golf Center, Carrollton Texas 
Golf Digest Certified America’s 100 Best Club Fitter

BreakThrough Golf Technology is a new shaft company founded by Barney Adams. they started with putter shafts. After a great deal of research and development and testing the Stability Putter shaft was developed. BGT developed a driver shaft built with premium Toray carbon fiber. This first model is light, ranging from 62 to 63 grams. they are stiffer than other shafts in the same weight range.

To continue reading this section of the review, you must be registered at a higher level membership.
Russ

ACCRA iSteel Red Iron Shaft Review

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Builder
The Highlands Performance Golf Center, Carrollton Texas 
Golf Digest Certified America’s 100 Best Club Fitter

ACCRA iSteel Red is the second iSteel model. “The first model is now called the iSteel Green. It has long been in my fitting system Its neutral profile is a favorite with many of my clients. Like the iSteel Green, the lower 2/3 of the shaft is stepless.

To continue reading this section of the review, you must be registered at a higher level membership.
Russ

ACCRA TZ Second Generation Driver Shaft Review

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Builder
The Highlands Performance Golf Center, Carrollton Texas 
Golf Digest Certified America’s 100 Best Club Fitter

ACCRA TZ is the second generation of the ACCRA TZ design reviewed several years ago. The new generation has lost a few grams. And 50 gram shafts have been added to the product line.

To continue reading this section of the review, you must be registered at a higher level membership.
Russ