Equipment
How the idea of shaft frequency began
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.’”
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.
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.
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Equipment
Coolest thing for sale in the GolfWRX Classifieds (4/18/24): TaylorMade BRNR mini driver head
At GolfWRX, we are a community of like-minded individuals that all experience and express our enjoyment of the game in many ways.
It’s that sense of community that drives day-to-day interactions in the forums on topics that range from best driver to what marker you use to mark your ball. It even allows us to share another thing we all love – buying and selling equipment.
Currently, in our GolfWRX buy/sell/trade (BST) forum, there is a listing for a TaylorMade BRNR mini driver head
From the seller: (@lasallen): “For sale is a BRNR mini 11.5 deg head only in brand new condition. $325 shipped.”
To check out the full listing in our BST forum, head through the link: TaylorMade BRNR mini driver head
This is the most impressive current listing from the GolfWRX BST, and if you are curious about the rules to participate in the BST Forum you can check them out here: GolfWRX BST Rules
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Equipment
Coolest thing for sale in the GolfWRX Classifieds (4/18/24): Ping PLD Limited Anser – 1988 Open Championship – #2 of only 88 Made
At GolfWRX, we are a community of like-minded individuals that all experience and express our enjoyment of the game in many ways.
It’s that sense of community that drives day-to-day interactions in the forums on topics that range from best driver to what marker you use to mark your ball. It even allows us to share another thing we all love – buying and selling equipment.
Currently, in our GolfWRX buy/sell/trade (BST) forum, there is a listing for a Ping PLD Limited Anser – 1988 Open Championship – #2 of only 88 Made.
From the seller: (@DLong72): “Ping PLD Limited Anser – 1988 Open Championship – #2 of only 88 Made. ?: $1150. ?? 100% milled collectors item from the limited releases commemorating when Ping putters won every major in 1988 (88 putters made). This was the model Seve Ballesteros used to win the 1988 Open Championship. Condition is brand new, never gamed, everything is in the original packaging as it came. Putter features the iconic sound slot.
Specs/ Additional Details
-100% Milled, Aluminum/Bronze Alloy (310g)
-Original Anser Design
-PING PP58 Grip
-Putter is built to standard specs.”
To check out the full listing in our BST forum, head through the link: Ping PLD Limited Anser – 1988 Open Championship – #2 of only 88 Made
This is the most impressive current listing from the GolfWRX BST, and if you are curious about the rules to participate in the BST Forum you can check them out here: GolfWRX BST Rules
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Equipment
Inside Collin Morikawa’s recent golf ball, driver, 3-wood, and “Proto” iron changes
As you probably know by now, Collin Morikawa switched putters after the first round of The Masters, and he ultimately went on to finish T3.
The putter was far from the only change he made last week, however, and his bag is continuing to change this week at the 2024 RBC Heritage.
On the range of The Masters, Morikawa worked closely with Adrian Reitveld, TaylorMade’s Senior Manager of Tour at TaylorMade, to find the perfect driver and 3-wood setups.
Morikawa started off 2024 by switching into TaylorMade’s Qi10 Max driver, but since went back to his faithful TaylorMade SIM – yes, the original SIM from 2020. Somehow, some way, it seems Morikawa always ends up back in that driver, which he used to win the 2020 PGA Championship, and the 2021 Open Championship.
At The Masters, however, Rietveld said the duo found the driver head that allowed “zero compromise” on Morikawa’s preferred fade flight and spin. To match his preferences, they landed on a TaylorMade Qi10 LS 9-degree head, and the lie angle is a touch flatter than his former SIM.
“It’s faster than his gamer, and I think what we found is it fits his desired shot shape, with zero compromise” Rietveld told GolfWRX.com on Wednesday at the RBC Heritage.
Then, to replace his former SIM rocket 3-wood, Morikawa decided to switch into the TaylorMade Qi10 core model 13.5-degree rocket head, with an adjustable hosel.
“He likes the spin characteristics of that head,” Rietveld said. “Now he’s interesting because with Collin, you can turn up at a tournament, and you look at his 3-wood, and he’s changed the setting. One day there’s more loft on it, one day there’s less loft on it. He’s that type of guy. He’s not scared to use the adjustability of the club.
“And I think he felt our titanium head didn’t spin as low as his original SIM. So we did some work with the other head, just because he liked the feel of it. It was a little high launching, so we fit him into something with less loft. It’s a naughty little piece of equipment.”
In addition to the driver and fairway wood changes, Morikawa also debuted his new “MySymbol” jersey No. 5 TP5x golf ball at The Masters. Morikawa’s choice of symbols is likely tied to his love of the Los Angeles Dodgers baseball team.
Not enough changes for you? There’s one more.
On Wednesday at the 2024 RBC Heritage, Morikawa was spotted with a new TaylorMade “Proto” 4-iron in the bag. If you recall, it’s the same model that Rory McIlroy debuted at the 2024 Valero Texas Open.
According to Morikawa, the new Proto 4-iron will replace his old P-770 hollow-bodied 4-iron.
“I used to hit my P-770 on a string, but sometimes the distance would be a little unpredictable,” Morikawa told GolfWRX.com. “This one launches a touch higher, and I feel I can predict the distance better. I know Rory replaced his P-760 with it. I’m liking it so far.”
See Morikawa’s full WITB from the 2024 RBC Heritage here.
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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.
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.
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.
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.
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.
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.
Charles Bartholomew
Jun 5, 2017 at 3:38 pm
Interesting article. A little history lesson now and then is a good thing.
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.
artie j
Jun 5, 2017 at 6:59 am
I didn’t know the backstory. Very cool article Ryan
SH
Jun 4, 2017 at 10:25 am
Yup, awesome