Connect with us

Equipment

How the idea of shaft frequency began

Published

on

Forty years ago, Kim Braly and his father Dr. Braly went down to West Palm Beach to visit Wilson Golf, and that trip forever changed the way the golf industry thinks about the shafts in golf clubs.

“My father and I invented frequency matching,” Kim told me.

“And what’s that?” I asked.

“It’s the process of matching the stiffness of the shafts in your clubs to the heads so you can hit a golf ball rather than snap the shaft or hit the ball all over the place,” Kim said.

OK, that got my attention. So I ask how he stumbled upon the idea.

“My dad was an engineer and got into golf,” Kim said. “Eventually, I got interested in golf as well. In the early 1980s, we went to see the original ‘Iron Byron.’”

Manchester_Lane_Robot

A modern-day golf robot at Titleist’s Manchester Lane Test Facility.

Iron Byron was the first club-testing machine, and it was modeled after smooth-swinging legend Byron Nelson. It’s basically an early robot — a motor in a box with an arm — built to use a regular golf club to hit a golf ball.

Kim and Dr. Braly watched the engineer operating Iron Byron put a club into the mechanical arm, place a ball in front of the club face and then press a button to swing the club. The result: perfection. It produced a high, piercing ball flight that was hit on a rope, not far removed from the storied ball flight of Nelson himself. This was followed by another and another. Kim and his father were ecstatic.

With great anticipation, they watched the engineer load the next club. The results were much different. Balls flew all over the place. The dispersion was awful. The Wilson engineer operating Iron Byron slowed down the machine. Balls flew shorter distances, but they landed closer together. The dispersion had been reduced. This was the inception of their game-changing idea; dispersion was a result of certain shaft characteristics matched with a club head and swing speeds. This “AH HA” moment changed how we fit and purchase golf clubs today.

Based on this observation, Kim and Dr. Braly designed a method to measure the performance of a golf shaft. Later, this led to the concept of frequency: very simply, stiffness is not the letter on the shaft, but a measurement based on characteristics like weight of shaft, weight of the head, length of the shaft and several other characteristics. The year was 1977 and they submitted a patent on this idea called “Frequency Matching.”

Armed with the power of measurement, Kim was ready to change golf shafts forever. He and his father started traveling the PGA Tour, and in doing so became the first “PGA Tour Van.” Over the last 40 years, Kim has worked as a researcher and designer, mastering the golf shaft. He’s worked at True Temper, Royal Precision and is currently as the head designer of research and development at KBS Golf Shafts.

Kim, working with a player

Kim working with a player on his golf equipment.

In 2008, Kim launched a shaft company called KBS, which became the fastest growing shaft company in golf. Since that time, the company has gotten some of the best golfers in the world to use its shafts products, including Rickie Fowler, Justin Rose and Phil Mickelson.

The next time you’re struggling with shots that fly sideways, think about Kim and Dr. Braly. You might want to try try being fit for shafts if you haven’t already, because they may just be the most important part of your golf club.

Your Reaction?
  • 202
  • LEGIT32
  • WOW15
  • LOL5
  • IDHT1
  • FLOP4
  • OB0
  • SHANK14

Brendan Ryan is a golf researcher, writer, coach and entrepreneur. Golf has given him so much in his life -- a career, amazing travels, great experiences and an eclectic group of friends -- and he's excited to share his unique experience through his writing on GolfWRX. He hopes you enjoy!

13 Comments

13 Comments

  1. TeeBone

    Jun 7, 2017 at 5:34 pm

    Further, frequency matching a set doesn’t mean that the clubs all have the SAME shaft flexibility, only that the DIFFERENCE in flexibility is uniform from club to club. As the clubs get shorter, frequency and stiffness increase. Add to this the fact that as the clubs get shorter and heavier, they are swung at a slower speed. In the end, each shaft in a set flexes more and more overall as the clubs get longer. This silly “dispersion” theory suggests that a shaft must flex a specific amount to behave consistently.

  2. TeeBone

    Jun 7, 2017 at 2:39 pm

    Tour players, unless they have a specific shaft manufacturer deal, are free to play whatever shaft they want. Their decision to play graphite over steel has to do with performance, not money.

  3. TeeBone

    Jun 7, 2017 at 2:27 pm

    So Iron Byron, set at any particular swing speed, only reproduces the same ball flight with one specific shaft flex? This “dispersion” theory would mean that the same shaft can behave quite differently, from swing to swing, for an otherwise same swing input. Nonsense. There is no mention of this in any of the best-regarded scientific studies of shaft flexibility. This is a made-up marketing story designed to sell equipment.

  4. Ned

    Jun 6, 2017 at 8:06 am

    Brunswick Golf developed the Frequency Matching System in 1981!

    • Rico

      Jun 6, 2017 at 4:04 pm

      The article states that the Braly’s submitted a patent for “Frequency Matching” in 1977.

  5. J.

    Jun 5, 2017 at 7:15 pm

    And stiffness of an EI profile may be invisible to CPM matching? Does SST PURE shaft alignment work better?

    • Skip

      Jun 7, 2017 at 1:18 pm

      SST pure is pure Kool-Aid. Drink it if you so choose.

  6. tim crider

    Jun 5, 2017 at 4:05 pm

    There is no doubt that shots can be saved every round by every player with changes from the shaft to the swing weight to the compression of your golf ball,,, hell practicing on the driving range could improve your game. There is a lot to know about this game and if you have the money and the time you may be able to cash in on these findings. Think how much better play got when shafts changed to steel from hickory. A lot to know and even more to learn. How much more can be found and improved, it was a very good article.

  7. Charles Bartholomew

    Jun 5, 2017 at 3:38 pm

    Interesting article. A little history lesson now and then is a good thing.

  8. cgasucks

    Jun 5, 2017 at 8:20 am

    If the Iron Byron can make crappy shots with a shaft that isn’t compatible with its swing speed, imagine it with a human being.

    • talljohn777

      Jun 5, 2017 at 12:14 pm

      Yes, if you have a club shaft that is too soft you can slow your swing down to allow the clubhead time to catch up and square, but why would you want to do that? The preference would be to hit a club that matches your top swing speed allowing you to get the most out of your swing.

  9. artie j

    Jun 5, 2017 at 6:59 am

    I didn’t know the backstory. Very cool article Ryan

  10. SH

    Jun 4, 2017 at 10:25 am

    Yup, awesome

Leave a Reply

Your email address will not be published. Required fields are marked *

Equipment

Members’ Choice: The top-5 drivers that golfers want to test in 2018

Published

on

Golf’s “off-season” is upon us and the PGAM Show in Orlando is quickly approaching in January, which means it’s time to start thinking about the upcoming driver releases.

We’ve seen a few companies launch their “2018” lines already — such as Cobra with its new King F8 and F8+ — while speculation swirls around the companies who have yet to announce their newest products. For instance, we’ve spotted a new “TaylorMade M4″ driver, and a new “Rogue” driver from Callaway. If history repeats itself and Titleist remains on a two-year product cycle, then we’ll see a replacement for the 917 line sometime in 2018, as well.

The question we posed to our GolfWRX Members recently was, which new or unreleased driver has you most excited heading into 2018? Below are the results and a selection of comments about each driver.

Click here to join the discussion!

Note: The comments below have been minimally edited for brevity and grammar. 

Titleist (7.39 percent of votes)

BDoubleG: I know it’s well down the road, but the Titleist 919 is what I’m most looking forward to. I played the 910 until this year and loved it, but I realized that I wasn’t getting much in the way of distance gains with the 915/917, and I was just leaving too many yards on the table. I know it’s a cliche, but I was seeing considerable gains with my G400LS, then my M2 I have now.

I feel like Titleist has been hurting in the driver market share category (and probably elsewhere), as I think a lot of people think that the 913, 915 and 917 have been minor refreshes in a world where almost everyone else has been experimenting with structure (jailbreak, turbulators) or with COG (spaceports, SLDR, G-series extreme back CG). I think if Titleist is going to recapture some of their market share, they will need to start taking an interest in stepping outside of their comfort zone to catch up with everyone else. Maybe I’m hoping for too much, but a D2-style head with ample forgiveness and low-spin (maybe a back-front weight), with the same great sound of the 917, and hopefully getting rid of the “battery taped to the sole” look would be a huge hit in my book.

I’m really looking forward to seeing what they come up with…and I hope I’m not disappointed.

Mizuno GT-180 or otherwise (8.87 percent of votes)

mrmikeac: After thoroughly testing the Mizuno ST-180 and seeing the distance gains I was getting from my Epic, I can’t wait for the GT to get here. Cobra would be next in line for me, but Mizzy really did something special with that JPX-900 and it seems to look like they’re going the same route with these drivers. Excellent feel, forgiveness and simple but effective tech. 

Callaway Rogue, Rogue Sub Zero or otherwise (17.73 percent of votes)

cvhookem63: It seems like we’re not getting a lot of “NEW” this time — just some same lines “improved” on a little. I’m interested to try the Rogue line and M3/M4 line to see if they improved on their previous models. The Cobra F8+ is intriguing to me, as well. I’d like to compare those three to see how they stack up. 

tj7644: Callaway Rogue. It’s gotta make me hit straighter drives right? It sure can’t be my swing…

Equipto: Callaway Rogue Sub Zero, and that’s about it. Most of my testing will be with shafts I presume. 

bangabain: Excited to give the Rogue a shot, although with the hope that there’s a little more fade bias despite the lack of sliding weight.

TaylorMade M3, M4 or otherwise (27.09 percent of votes)

DeCuchi: TaylorMade M3 of course, and the F8+. I’m more interested in the fairways this year though. TaylorMade M4 fairways and Rogue fairways are top of my list. 

elwhippy: TaylorMade M3 and M4. Not owned a TM driver for several seasons and want something with a bit more power than the Ping G Series…

cradd10: M3. Still rocking an OG M1. Super solid driver. Curious to see if the updated version can beat it. 

Cobra F8/F8+ (33.66 percent of votes)

WAxORxDCxSC: I sure want to like the F8 based on looks (I understand I’m possibly in the minority on that one at GolfWRX).

TWshoot67: For me, it’s three drivers: the Cobra F8, F8+ and TM M4. 

The General: Cobra F8 is going to dominate everything, just wait, on the F8

Ace2000: Definitely F8/F8+. Love my Bio Cell+ and can’t help but wonder if these perform as good as they look. 

Click here to join the discussion!

Your Reaction?
  • 191
  • LEGIT18
  • WOW8
  • LOL4
  • IDHT3
  • FLOP8
  • OB4
  • SHANK95

Continue Reading

Equipment

True Linkswear goes back to its spikeless roots

Published

on

True Linkswear is getting back to its roots, while expanding the singular golf shoe brand’s reach at the same time.

The Tacoma, Washington, company’s Director/Partner, Justin Turner, told us that with the release of the two new models, the company is course-correcting from a move toward the mainstream, spiked golf shoes, and a loss of identity.

In addition to durability issues, Turner said the core True Linkswear customer didn’t appreciate the shift — or the deluge of models that followed.

So, in a sense, the two-model lineup both throws a bone to True devotees and casts a wider net.

Turner and company asked: “If we wanted to restart the brand….what would we value?” A commitment to the brand’s core outsider identity, style as articulated in early models, and an emphasis on quality led Turner on multiple trips to China to survey suppliers in early 2017. Eventually, the company settled on a manufacturing partner with a background in outdoor gear and hiking shoes.

“We’ve spent the last few years scouring the globe for the best material sourcing, reputable factories, advanced construction techniques, and time-tested fundamentals to build our best shoes yet. No cheap synthetics, no corners cut.”

Eventually, True settled on two designs: The Original, which, not surprisingly, has much in common with the zero-drop 2009 industry disrupting model, and the Outsider: a more athletic-style shoe positioned to attract a broader audience.

True Linkswear Original: $149

The company emphasizes the similarity in feel between the Original and early True Linkswear models, suggesting that players will feel and connect to the course “in a whole new way.”

  • Gray, White, Black colorways
  • Waterproof full grain leather
  • Thin sole with classic True zero-drop heel
  • 12.1 oz
  • Sockfit liner for comfort
  • Natural width box toe

True Linkswear Outsider: $169

With the Outsider, True Linkswear asked: “What if a golf shoe could be more? Look natural in more environments?”

  • Grey/navy, black, white colorways
  • EVA midsole for lightweight cushioning
  • Full grain waterproof leather
  • 13.1 oz (thicker midsole than the Original)

The company envisions both shoes being worn on course and off.

True Linkswear introduced the more durable and better-performing Cross Life Tread with both models. Turner says the tread is so good, you can wear the shoes hiking.

Both models are available now through the company website only. True Linkswear plans to enter retail shops slowly and selectively.

Your Reaction?
  • 91
  • LEGIT6
  • WOW0
  • LOL1
  • IDHT1
  • FLOP4
  • OB2
  • SHANK22

Continue Reading

Equipment

Sean O’Hair and Steve Stricker’s Winning WITBs from the 2017 QBE Shootout

Published

on

The team of Steve Stricker and Sean O’Hair closed the QBE Shootout with an 8-under 64 for a two-shot win over Graeme McDowell and Shane Lowry. O’Hair made a timely eagle on the par-5 17th hole at Tiburon Golf Club to lock up the first place prize of $820,000 ($410,000 each).

Here’s a look at their bags.

Sean O’Hair

Driver: Titleist 917D2 (9.5 degrees)
Shaft: Mitsubishi Tensei CK Pro White Prototype 60TX

3 Wood: Titleist 917F2 (15 degrees)
Shaft: Mitsubishi Diamana S+ Limited Edition 70TX

5 Wood: Titleist 915F (18 degrees)
Shaft: Mitsubishi Rayon Diamana S+ Limited Edition 80TX

Irons: Titleist 716 T-MB (4-iron), Titleist 718 AP2 (5-PW)
Shafts: True Temper Dynamic Gold Tour Issue X100

Wedges: Titleist Vokey Design SM7 prototype (50, 54 and 58 degrees)
Shafts: True Temper Dynamic Gold Tour Issue S400

Putter: Scotty Cameron prototype

Golf Ball: Titleist Pro V1

Related: Sean O’Hair WITB

Steve Stricker

Driver: Titleist 913D3 (8.5 degrees)
Shaft: Fujikura Motore Speeder VC 8.2X

3 Wood: Titleist 915F (13.5 degrees)
Shaft: Mitsubishi Rayon Tensei CK Pro White 80TX Prototype

Hybrid: Titleist 816H1 (17.0 degrees)
Shaft: Fujikura Motore Speeder VC 9.2X

Irons: Titleist 718 CB (3-9)
Shafts: KBS Tour Prototype

Wedges: Titleist Vokey Design SM6 (46, 54 and 60 degrees)
Shafts: True Temper Dynamic Gold S400 w/ Sensicore

Putter: Odyssey White Hot 2

Golf Ball: Titleist Pro V1x

Related: Steve Stricker WITB 2017

Note: We originally reported Stricker had a Scotty Cameron putter in the bag, per Titleist’s equipment report. Stricker did, however, have a Odyssey White Hot putter in play during the final round of the QBE Shootout.

Your Reaction?
  • 63
  • LEGIT4
  • WOW1
  • LOL2
  • IDHT3
  • FLOP2
  • OB1
  • SHANK7

Continue Reading

19th Hole

Facebook

Trending