Numerous times I have read posts on GolfWRX from golfers who persist in selecting a shaft on the basis of a butt frequency measurement. In viewing new shafts that come on the market, many golfers believe as long as the new shaft has the same butt frequency as their current shaft, the shaft’s stiffness design will match their swing.
Unfortunately, there is a lot more to the stiffness design, stiffness performance and the stiffness feel of a shaft than a single butt frequency measurement. In other words, it is quite rare for two shafts with the same butt frequency to be the same stiffness design over the full length of the shaft. And equally, it is quite common for two shafts to have the same exact butt frequency measurement but be completely different in their stiffness design over the rest of the shaft.
Here’s a couple of examples to illustrate this point. First, let’s take a look at the full-length stiffness design of two shafts for drivers and woods, both made by the same company.
Note: All zone frequency measurements performed for our TWGT Shaft Bend Profile software are taken using a 454-gram tip weight so that we can obtain measurements all the way to the tip section of the shaft. With only a 205-gram tip weight, it would not be possible to obtain the measurements for the lower center to tip section of the shaft. Using a 454-gram tip weight lowers the actual frequency measurement compared to what the measurement would be using a 205-gram tip weight.
The two above shafts with their same 180-cpm butt frequency measurement, if done with a 205-gram tip weight, would both have a frequency measurement of 254 cpm. But the point is the same regardless of the frequency measurement method.
Here are two shafts which if measured only for the butt frequency, would lead a golfer to believe that they have the same flex or same stiffness design. Yet in looking at the full-stiffness design of both shafts, these two shafts may have the same butt frequency measurement, but they could hardly be more different in terms of their overall stiffness design. These two shafts in the hands of the same player would result in a completely different stiffness performance and stiffness feel — yet if the golfer were to look at the shafts by only referencing the single butt frequency measurement, the conclusion would be that they have the same stiffness.
This is not an isolated case. Within the 2,100 different shafts in our Shaft Bend Profile software, there are too many examples to list that are exactly like this — shafts that have the same butt frequency measurement but are completely different in their design, performance and feel.
The same thing exists within iron shafts, which is an area in club fitting that many golfers make their shaft selection decision based on comparing the butt frequency measurements. Let’s take a look at an example of two iron shafts with the same butt frequency.
What’s interesting when looking at the full-stiffness measurements of these two S flex iron shafts is that within the world of shafts, these two shafts may have the same butt frequency but they are almost as different in their stiffness measurements for the rest of their lengths as they possibly can be. Were the same golfer to play both these shafts, the Rombax S would feel like a telephone pole compared to the ProLaunch Red S. Yet both are S flex and both have the same exact butt frequency.
This matter of judging shaft stiffness, performance and feel on the basis of the butt frequency only can rise up to mislead golfers in the other direction as well. Let’s take a look at this next pair of shafts, a Cleveland Gold 60 S and the Fujikura Blue 004-R.
Remember that these frequency measurements in the Bend Profile software are done using a 454-gram tip weight. The butt frequency of these two shafts if measured with a 205-gram tip weight would be 254 cpm for the Cleveland Gold 60-S and 244 cpm for the Blur 004-R.
Looking only at the butt frequency measurements, one would think that this 10 cpm difference in butt frequency with a 205-gram tip weight, or 7 cpm difference with a 454-gram tip weight, would most definitely be the reason the Cleveland Gold is an S flex and the Fuji Blur an R flex.
But take a look at all of the rest of the relative stiffness measurements after the butt frequency measurement. The 2- 3-5 differences in frequency for the 26 inch, 21 inch and 16 inch positions on the shaft are so small to be insignificant in terms of a stiffness difference in two shafts. Even the 13 cpm difference in the very tip end of the shaft is extremely small in terms of a performance or feel difference.
For all intents and purposes, beyond that single butt frequency measurement, these two shafts are so close in stiffness design to each other that only a very small number of very feel sensitive players could ever tell the difference in performance or feel between these two shafts.
Another interesting point from this comes to mind when you think about sorting shafts by their butt frequency as a way to make sure all the shafts in a set have the same stiffness. Think about that based on what you have seen in the previous graphs which show shafts of the same butt frequency but totally different over the rest of the shaft, and this above graph which shows two shafts that are completely different for their butt frequency yet so very close to each other over the entire rest of the shaft.
But what about that 7 cpm difference in the butt frequency measurements? Wouldn’t a golfer feel that difference even if the rest of the two shafts are so close to each other in their stiffness design?
Consider this: In the installation of wood shafts into a driver and fairway woods, almost all of that very area where the butt frequency measurement is performed is cut off the shaft when the woods are built to conventional playing lengths. Most shafts for woods are made with a raw uncut length of 45 inches or 46 inches. When installed in most driver heads, to achieve a playing length for the driver of 45 inches, in the area of three inches is cut from the butt end of the raw shaft after installation.
That means the position on the shaft where the butt frequency is measured is now just two inches from the end of the grip. Do you think that last two inches of the butt of the shaft bends very much during the swing? No, it doesn’t, which in turn even further negates the 7 cpm difference in butt frequency between these two shafts in our above example.
Shaft stiffness design selection has to be made not just on the basis of the butt frequency, but on the basis of the stiffness of the full length of the shaft. So the next time you hit shots with a club that you know has the same frequency but the shaft feels or performs different, you now know why. Or the next time you hit shots with two clubs that you are sure have different stiffnesses yet feel and perform the same, you know that reason as well.
Bottom line? If you are serious about your shaft selection, you need to be working with a good, experienced custom club maker who is cognizant of these factors and who is able to show you the actual differences and similarities of the stiffness design of the whole shaft.
Top 10 most iconic driver and fairway wood shafts of all time
If there is one thing we love as golf gear junkies, it’s driver (and fairway wood) shafts!
From the early years to today’s modern designs, materials, and profiles, there are some shafts that have maintained steady popularity—like a Ping Eye 2 lob wedge. There are a lot of graphite shafts that have stood the test of time, and they bring back memories of great driver combos gone by.
This is my top 10 list (in no particular order) of the most iconic driver shafts of all time.
Fujikura 757 Speeder
Launched more than two decades ago, you could arguably say it’s the shaft that started the shaft craze. Built from advanced materials in a profile that was designed to work for stabilizing larger driver heads of the time—you know when 300cc was HUGE. The Speeder 757 was an instant hit among PGA Tour players, most notably Fred Couples, who used the shaft for over a decade and was said to have at one point remove all the remaining stock from one of the equipment vans for his personal use.
One of the very first “low-spin monsters,” the Aldila NV took the PGA Tour and retail by storm when it was introduced. The unique green paint made it easily recognizable, and thanks to the many weights it was offered in, it was just as popular in fairway woods as it was in drivers. Honorable mention goes to its cousin the NVS (orange version) that was softer in profile and easier to launch. At a time when most off the rack drivers had three shaft options (low, medium, and high flight-promoting shafts), the NV was the staple as the low-launch option in many OEM offerings.
Mitsubishi Diamana Blue Board
Originally very hard to find, the Diamana Blue Board was a shaft that fit a large variety of golfers. Its name was derived from the blue oval that surrounded the “Diamana” on the all silver/ion painted shaft. Just like others on the list, the Blue Board came in a variety of weight options and was made particularly popular by Tiger Woods. Best known by most shaft junkies as being extremely smooth, it is one of the first sought after shafts in the aftermarket.
True Temper EI-70
It’s hard to picture a classic 900 series Titleist Driver without an EI-70 shaft in it. The EI-70 was lower torque—when that was a big talking point in shaft design—and it had a fairly stout profile, which in turn made it very stable. Unlike others on the list, it was much more subdued as far as its paint and graphics, but the green shaft was a mainstay for many years on tour and in the bags or recreational golfers.
Graphite Design Tour AD DI-6/7
It’s hard to figure out if it was the design and performance of the shaft or the performance of a certain golfer (a certain Mr. Woods) that to this day makes the Tour AD DI-7 so popular. Painted BRIGHT orange with a bend profile that offered a lot of stability and playability for a variety of player types, it can still be spotted on tour every week. You could call the DI-7 the grandchild of the YS6/7, which should also get an honorable mention for its well documented smooth feel.
The aptly nicknamed “Lakers Shaft” because of its original gold and purple paint job, this was another shaft that was just as popular at the retail level as it was on the PGA Tour. As driver head sizes were going up (400cc ), players were looking for stability and this offered it. The most notable player to use it was Jim Furyk, who won the 2003 U.S. Open with one in the bag.
Henrik Stenson and the Grafalloy Blue in his 3-wood. Name a more iconic duo…(I’ll wait). An updated and stiffer version of the Prolite, the Blue stood out for a couple reasons—its color, and its extremely low torque. Most golfers wouldn’t consider the Blue a very smooth feeling shaft, because it took a lot of speed and a quick tempo to maximize its performance, but it did birth another shaft for average player: the Prolaunch Blue, which is still available to this day.
Matrix Ozik TP7HD
$1,100 bucks! That was the original asking price for the Martix Ozik TP7HD. Matrix thought of this design as a concept car of shafts and threw everything they had at it including exotic materials like Zylon, and the fact that it was wrapped on a 16-sided hexadecagon mandrel. Some golfers said it had a fluid-like feel (we golfers can sure be weirdly descriptive) but it still had a LOT of stability thanks to the materials. Although never as popular as many on the list, if you did spot one of these in the wild you knew its owner was VERY serious about golf gear.
True Temper Bi-Matrix
Bi (two) matrix (a surrounding medium or structure). The first and only truly notable shaft to be made from putting two very different and distinct pieces together. The bottom portion of the shaft utilizes a steel tip section that serves to add stability and additional weight. This shaft is quirky, which is something that could also be said about Bubba Watson, who has used this shaft for over a decade now in MANY different Ping drivers (although Tiger did give it a go for a short period).
This shaft might seem like the underdog of the bunch, but if you talk to any longtime club builder and get into “vintage” aftermarket shafts, undoubtedly the Accra SE-80 is going to come up at some point. Originally launched in 2006, the SE-80 combined a very low torque rating with an active tip section to help increase launch—yet feel extremely stable. Even though this shaft design is officially a teenager now, you can still find it in the bag of PGA Tour winner Ryan Palmer, who uses it in a TaylorMade R15 5-wood.
Editor’s Note: Let us know any shafts you think should be included in the comment section, WRXers!
Forum Thread of the Day: “TaylorMade Albertsons Boise Open putter covers”
Today’s Forum Thread of the Day showcases TaylorMade’s Albertsons Boise Open putter covers. The covers have impressed our members, who are hoping that the new additions will now come to retail.
Here are a few posts from the thread, but make sure to check out the entire thread and have your say on the covers at the link below.
- Green In Reg: “Name your price TM!”
- chrisokeefe12: “Those are super cool. Would be sweet if they did one for every major college.”
- Titletown: “Those are great.”
Justin Thomas’ winning WITB: 2019 BMW Championship
Driver: Titleist TS3 (9.5 degrees)
Shaft: Mitsubishi Diamana BF 60TX
3-wood: Titleist TS3 (15 degrees)
Shaft: Mitsubishi Tensei CK Pro Blue 80TX
5-wood: Titleist 915Fd (18 degrees)
Shaft: Fujikura Motore Speeder VC 9.2 Tour Spec X
Irons: Titleist T100 (4-iron), Titleist 718 MB (5-9)
Shafts: True Temper Dynamic Gold Tour Issue X100
Wedges: Vokey Design SM7 (46, 52, 56 degrees), Vokey Design SM6 (60 degrees)
Shaft: True Temper Dynamic Gold Tour Issue S400
Putter: Scotty Cameron X5
Grip: SuperStroke Pistol GT Tour
Ball: Titleist Pro V1x
Grips: Golf Pride Tour Velvet Cord
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Tour caddie shoots 202 in U.S. Am qualifier and gets DQ’d after the event
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Matthew Wolff’s winning WITB: 2019 3M Open
Collin Morikawa’s winning WITB: 2019 Barracuda Championship
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