Graphite Design Tour AD Iron Shaft Review

Graphite Design Tour AD Iron Shaft Review

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Club Maker
Golf Center at the Highlands, Carrollton TX, A Golf Digest Top 100 Club Fitting Studio

I have fit almost exclusively with steel iron shafts for many, many years. When I built EI measuring instruments I checked shaft to shaft consistency in graphite iron shafts. I would not build with what I saw. When some premium shafts came to market last year I checked set consistency and saw what I most always see in steel. consistent profiles through out the sets. Furthermore, I saw steel like stiffness and torque in much lower weight shafts. Now that I am at an age where weight matters the stiffness to weight ratio of premium carbon fiber iron shafts got my attention.

The Graphite Design Tour AD Iron shafts are not a new product. But my renewed interest in Carbon Fiber iron shafts prompted me to ask for review samples. They came, multiple shafts in 11 different weight / stuffiness models. It took quite some time to measure them. The good news, as you can see in this chart, the profiles inside the sets are consistent. They generally have the same stiffness as steel that is 20 grams heavier. These shafts are worthy of the Graphite Design Tour AD brand. Lets take a close look at the specifications.

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If you want to truly understand golf shafts, register for an annual subscription of $10. Ten dollars is less than the cost of a sleeve of premium golf balls or a bucket of range balls. Your support will keep Golf Shaft Reviews going and growing. This website is the only comprehensive information source about golf shafts available to the public. I do not receive compensation from the shaft companies nor clutter the site with ads.

The technical section of the site is open to all. In it you can learn about the terms and concepts discussed in the reviews.

Information provided at registration will NEVER be shared with ANYONE. To be notified of new reviews, follow DevotedGolfer on facebook.

Enjoy and Good Golf,
Russ

KBS TGI Tapered Iron Shaft Review

KBS TGI Tapered Iron Shaft Review

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Club Maker
The Golf Center at the Highlands, Carrollton Texas

The parallel KBS Tour Graphite Iron, TGI shafts released earlier this year and was reviewed in May. The constant weight, taper tip version just released in July 2018. It took KBS longer than expected to get the constant weight taper profiles where they wanted them. In this video, shot in January at the PGA Merchandise Show, Kim Braly talks about the Tour Graphite iron Shafts.

If you do not fully understand the difference between parallel and constant weight tapers please read the Technical article “Parallel vs Constant Weight Iron Shafts“, Lets move on to look at the measurments of the KBS TGI tapers. 

To read this review, you must register . 

If you want to truly understand golf shafts, register for an annual subscription of $10. Ten dollars is less than the cost of a sleeve of premium golf balls or a bucket of range balls. Your support will keep Golf Shaft Reviews going and growing. This website is the only comprehensive information source about golf shafts available to the public. I do not receive compensation from the shaft companies nor clutter the site with ads.

The technical section of the site is open to all. In it you can learn about the terms and concepts discussed in the reviews.

Information provided at registration will NEVER be shared with ANYONE. To be notified of new reviews, follow DevotedGolfer on facebook.

Enjoy and Good Golf,
Russ

KBS TCI Graphite Iron Shaft Review

KBS TCI Graphite Iron Shaft Review

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Club Maker
The Golf Center at the Highlands, Carrollton Texas

Following the success of the KBS Carbon Fiber Hybrid shaft released in 2017, KBS has created light weight parallel iron shafts. Rather than me explaining the shaft, listen to Kim Braly at the PGA 2018 merchandise show discuss its development and pre release testing.

The shaft does not have a flex designation on its label. The number is the 6 iron swing speed which is your first cut and fitting the shafts. Lets take a look at the profile and data. 

To read this review, you must register . 

If you want to truly understand golf shafts, register for an annual subscription of $10. Ten dollars is less than the cost of a sleeve of premium golf balls or a bucket of range balls. Your support will keep Golf Shaft Reviews going and growing. This website is the only comprehensive information source about golf shafts available to the public. I do not receive compensation from the shaft companies nor clutter the site with ads.

The technical section of the site is open to all. In it you can learn about the terms and concepts discussed in the reviews.

Information provided at registration will NEVER be shared with ANYONE. To be notified of new reviews, follow DevotedGolfer on facebook.

Enjoy and Good Golf,
Russ

Mitsubishi Diamana Thump Iron Shaft Review

Mitsubishi Diamana Thump Iron Shaft Review

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Club Maker
The Golf Center at the Highlands, Carrollton Texas

 

This is the second release of a Diamana Thump Iron Shaft. The first release, in 2010, was eventually discontinued. At $160 per shaft, or $1280 per set of shafts, there was little interest. I am surprised to see the shaft again being offered. Perhaps PXG’s success at selling uber expensive irons demonstrated there is a market for ultra premium irons.

What exactly do you get at $160 per shaft? Much like an exotic sports car you get light weight strength. I am seeing equivalent steel stiffness with 10 to 15 grams less weigh. I am not referring the the R,S,X denoted on shafts. Those letters are meaningless ways to compare shafts outside of their own particular model. I am referring to area under the EI curve, the only functional method I have seen to rate shaft stiffness. I have to get into the 125 gram range in steel to see a stiffness match to the 2018 Mitsubishi Chemical Thump 105 gram iron shafts. These are truly exotic iron shafts at a truly exotic price. Unless you are comfortable with the stiffness found in something like a 125 gram KBS tour this is not a shaft you can load. But if you are, you have to see what happens when your clubs weigh loses 15 grams. Let’s take a closer look at the numbers.

To read this review, you must register . 

If you want to truly understand golf shafts, register for an annual subscription of $10. Ten dollars is less than the cost of a sleeve of premium golf balls or a bucket of range balls. Your support will keep Golf Shaft Reviews going and growing. This website is the only comprehensive information source about golf shafts available to the public. I do not receive compensation from the shaft companies nor clutter the site with ads.

The technical section of the site is open to all. In it you can learn about the terms and concepts discussed in the reviews.

Information provided at registration will NEVER be shared with ANYONE. To be notified of new reviews, follow DevotedGolfer on facebook.

Enjoy and Good Golf,
Russ

UST Recoil Parallel Iron Shafts

UST Recoil Parallel Iron Golf Shaft Review

By Russ Ryden, Fit2Score, A Dallas Fort Worth Club Fitter & Club Maker
The Golf Center at the Highlands, Carrollton Texas

RecoilParallelImageWhen the UST Recoil Iron shaft was first introduced I was enthralled by the concept of hoop deformation storing and then releasing energy. Hoop deformation was not part of the discussion in the club fitting organizations I belonged to. There was no publically documented procedure in the golf shaft business for measuring it. I was given some hints by another shaft company and set out on a long discovery process to measure it. Eventually it redefined how I calculated golf shaft EI by adding a correction for hoop deformation in the 3 point measuring process. This did not happen overnight. The journey lasted a little over a year, hoop deformation measurements are now an integral part of my understanding of the golf shaft. While I am forever grateful to UST Mamiya for bringing this to my attention, I did not find anything extraordinary about the hoop strength of the Recoil shafts. Generally it is a function of wall thickness, fiber orientation and layup strategy.

I recently obtained a limited range of UST Recoil shafts, including the Recoil 450, Recoil 460, Recoil 660, Recoil 670 and Recoil 680. Before we look at the numbers I realized in a conversation with a shaft company executive a few weeks ago that I was remiss in explaining my rating of shaft stiffness, EI Area. An article on the metric has been posted.. The concept was presented to me by Jeff Meyers who was the shaft guru at Titleist for about 20 years. By using area under the curve, each measurement of the shaft, from tip to butt is given equal weight in the stiffness rating. Jeff found it preferable over frequency to predict how golfers would report their impression of shaft stiffness. Frequency is heavily weighted toward the butt, overlooking the remainder of the shafts. As you read the charts on this site, your can compare overall stiffness of shafts by looking at the EI Area number in the tables. 

To read this review, you must register . 

If you want to truly understand golf shafts, register for an annual subscription of $10. Ten dollars is less than the cost of a sleeve of premium golf balls or a bucket of range balls. Your support will keep Golf Shaft Reviews going and growing. This website is the only comprehensive information source about golf shafts available to the public. I do not receive compensation from the shaft companies nor clutter the site with ads.

The technical section of the site is open to all. In it you can learn about the terms and concepts discussed in the reviews.

Information provided at registration will NEVER be shared with ANYONE. To be notified of new reviews, follow DevotedGolfer on facebook.

Enjoy and Good Golf,
Russ