Putting a Number on Shaft Stiffness

Can We Quantify The Feel of a Golf Shaft?

What constitutes feel or relative stiffness of a golf club? You’ll find there are many theories on defining how stiff a golf club (or shaft) are compared to another. Today I want to share with you a different perspective on defining this delicate subject and hopefully opening your mind to other possibilities or explain what you may have experienced in the past.

Deflection boardFirst, you need to understand one thing; the only standard in the golf industry is “there are there no standards”. When you buy a club with an R-flex in it, you may find that it feels different from other R-flex shafts. Some of the factors include the lack of standardization for flex or could be the overall weight, bend point of stiffness distribution as well as torque.

For years a simple deflection board was used that cantilevered the butt end of the shaft as one hung a weight from the tip and noticed how much the shaft deflected downward. The more the tip hung lower, the more flexible the shaft was considered. In other cases, a shaft is deflected a known distance downward and load sensor records the amount of force to hold it into that position. Here, the lower amount of force indicated a more flexible shaft. Of course this is only true if we are comparing clubs of the same length.

Frequency readingToday, frequency analyzers are commonly used as another way to define the stiffness of a club by clamping the butt end and plucking the head to put it into motion. The frequency analyzer measures these movements and calculates how many cycles per minute (cpm) the shaft would oscillate over the sensor. The higher the number of oscillations meant the shaft was moving faster and would be considered a stiffer club than one with a lower cpm. Again this is only true if we are comparing clubs of the same length.

EI Machine deflectionLast year we added a new piece of equipment to our shaft testing lab to help better quantify shaft stiffness and to educate clubmakers and customers alike to help select the right shaft. Our EI shaft profiler is a 3-point bending test that measures the deflection along a span of the shaft. By taking measurements from the tip to the butt and plotting the results provides a more comprehensive look at the shaft’s stiffness distribution and a better understanding of how that shaft will react.

It is not the most glamourous job as you have to carefully move the shaft to each exact location, reset the dial indicator to zero, lower the weight and record the amount of deflection and then repeat this step over and over and over. Well here is an example of a graph of deflections readings of 3 flexes of the same family of shaft.

Deflection curveTo make this easier to understand, let’s blow up the chart and makes some notes. The left side of the chart represents the tip end. The plot is an accumulation of 17 data points measuring 2” closer to the butt. The lower the position on the chart; the stiffer the shaft is at any given point. Yes, the butt end is stiffer than the tip due to the larger cross section or diameters. The red line is the S-flex, black line is the R1 flex (standard regular) and the blue line is the R2 flex (commonly referred to as senior or A flex).

EI Deflection Curve Area

Since it is the same family of shaft (in this case the Graphite Design Tour AD BB 5), the shape of the curve is very similar. The only difference is the more flexible shafts exhibit a greater amount of deflection.

To put this all in perspective, one way to quantify feel in is to examine the summation of all the individual deflections along the entire length of the shaft. In other words we want to look at the area under the curve (shaded area). If we were to look at the area under the black curve, it would be larger and the blue line even a little more.

Download Hireko Golf CatalogThis leads us to our next topic. Clubmakers rely on frequency analyzers to take a quick measurement of the stiffness of a club or even a shaft by itself with some sort of weighted object attached. Again you have to compare frequencies at identical lengths otherwise you are not comparing apples to apples. But let’s say we have three shafts of all the same frequency, length and similar weight. Should all those shafts feel the same? Many would incorrectly assume so.

There is another factor in shaft fitting that is important to remember and that is the stiffness distribution or what some may say is the bend point or kick point of the shaft. Here are three R-flex shafts that we tested that had the same frequency, very similar weight, but their deflection curves varied considerably, especially near the business end of the club (head).

high mid low deflectionFrom about the 22” point from the tip all the way to the butt end, these shafts all had nearly identical deflections readings. It may not come as much surprise as the shafts had the same frequency which is measured by clamping the butt end. The blue line represents the Accuflex Evolution. Although this shaft is no longer manufactured, I can tell you it was one very tip stiff shaft and always felt much firmer overall than other shafts of similar frequency. The red line represents the Aldila NV Voodoo 60 which is considered a mid-trajectory shaft by the manufacturer. Lastly, the green line represents the Loomis Collegiate Series, which is said to be more high-to-mid launching.

Now let’s tie in what we learned earlier. The less area under the curve would result into a stiffer shaft. Even though each of these shafts is the same exact frequency and similar weight, the Evolution should feel the stiffest and the Loomis Collegiate the most flexible of the three.

Back in 2011, I reported on the UST-Mamiya VTS series that was recently introduced. If you are not familiar with this unique series of shafts, you can click on the link for more detailed information. UST Mamiya was able to produce shafts of the same weight, butt, mid and tip flex, but with 3 different torques, each 1 degree apart or what they said was the minimum threshold at which golfers could feel. The shafts are colored coded to indicate the torque. The Black is the lowest torque version. Silver is the mid torque version or 1º higher than the black. Lastly Red is the highest torque version of 1º higher than the silver. The higher the torque was to provide a softer feel of the grouping.
VTS Deflection
Here are the deflection profiles of the 65 gram S-flex series. At first glance they appear to overlap once another. This should come as no surprise. After all, there were designed to be the same stiffness, stiffness distribution and weight. But there are little nuances with each shaft if you were to look at the individual deflections and measure the area under the curves. The Black (or lowest torque) had the least amount of area under its curve signifying the stiffest “feel”. The Silver was next and the Red exhibited the highest amount of area under the curve.

So what is the real reason for the difference in feel? Remember, In order to alter the torque and maintain everything else requires the materials to be applied at different angles along the shaft forming mandrel and these can alter the deflections along the length of the shaft. For years our DSFI (Dynamic Shaft Fitting Index) was based on torque as well as frequency. Now we have another way to put a number on feel.

The 2014 Dynamic Shaft Fitting Addendum is Now Available

The Hireko Shaft Reference Guide is just another example of how Hireko is committed to educating our customer base and making ordering or selecting shafts more efficient.

Hireko Tech Director Jeff Summitt TeachingBoy, do I feel old.  I just realized that the on-going independent research on shafts I have been working on has entered its 25nd year!  This shares a silver anniversary with of all things the World Wide Web. And to think of it, I had hair back then – a lot of it.  If you are not hip to what all the fuss is about, it marks a small footnote in history that started to get us out of the Stone Age of how golfer’s choose shafts and begun doing so much more scientifically. This was the first shaft-to-shaft study using the same set of testing procedure to see how golf shafts compare after they have been cut and installed into heads on a grand scale.

What Type of Information Will You Find?
For those that are not already familiar with the Dynamic Shaft Fitting Addendum, the first thing you will find out is not all R-flex shafts are created equal – that is in terms of flex, torque, bend point, etc. as every manufacturer are their own standard.  In reality, there are no industry standards for shafts and the reason why this book serves as an invaluable guide.  Consistency has been the key to this text as each of the well over 3000 shafts and 50,000 measurements has been conducted by one individual (yep, yours’ truly) using the same set of procedures and equipment for these past 25 years.

DSFI Table

There are 19 published specifications listed for each shaft that include:

Flex, Uncut Shaft Weight, Tip Diameter, Butt Diameter, Uncut Shaft Balance Point, Cut Shaft Balance Point, Completed Club Balance Point, Total Assembled Club Weight, Head Weight, Grip Weight, Cut Shaft Weight, Completed Club Frequency, Butt Deflection, Tip Deflection, T/B Ratio, Cut Shaft Torque, Raw Shaft Torque, Club Length (and wood bore type) and DSFI (Dynamic Shaft Fitting Index) Rating

Download Hireko Golf 2014 CatalogSome of the specifications may not be important to you or only help you with assembly such as knowing how much head weight you can expect at a specific length.  In other cases, there are several key parameters as shown in the following table which can be considered the shaft’s DNA.

Nuts and Bolts of the Text
If you don’t want to download all 192 pages of this text, I would highly encourage you to at least access Chapter 1, which provides the legends of what each of the specifications are and we would encourage you to read that carefully.  Chapters 2 and 5 are the nuts and bolts of the 2014 Shaft Fitting Addendum with Chapter 2 showing the data and Chapter 5 providing the how to use the information with the master shaft fitting charts in order of stiffness.  Chapters 3 and 4 provide data on shafts that are no longer available, but is still a valuable guide to cross-reference shafts.   This year we have added shafts from Aerotech, Graman and Mitsubishi-Rayon to the mix.

DSFI Table 3
The Handy Hireko Quick Shaft Reference Guide is Also Available
Unfortunately, not every shaft in our catalog and website can be tested for different reasons.  However, that doesn’t mean we can’t provide fitting advice in an accurate and efficient manner.  Once we have tested numerous shafts from a manufacturer, we have a solid understanding of how their flexes run, what the difference between their torque measurements and ours would be, etc.  Using all the information and fitting concepts that we outlined in the 2014 Dynamic Shaft Fitting Addendum, we can apply those same principle to the other shafts we haven’t tested and still confidently know where that shaft would fit.  That is why we put together a handy reference guide for shaft fitting on virtually all the shaft we distribute.

Not only is the Hireko Quick Shaft Reference Guide updated to reflect the new shafts in the catalog, but we have added hyperlinks to each of the products.  With one click, you can now go directly to the product page, read the description, look up the pricing and detailed specifications to compare products and even order.

What does Hireko Quick Shaft Reference Guide do?
The Hireko Shaft Reference Guide helps filter the wood and irons shafts we offer in 3 easy steps; by clubhead speed (or player’s distance), shaft weight and ball flight.

DSFI Table 2

The key is to find the group or category of shafts (#1) based on your or your customer’s swing speed, distance DSFI table 4and tempo.  From there, we break it down in different weight ranges (#2) starting from lightest to heaviest within the grouping.  For example, if you or your custom is looking for more distance, you would choose a shaft that is lighter.  For more control, you would select a heavier shaft.  Once the weight range has been selected, then you can sub-filter those shafts based on trajectory or fade/draw (#3).  In a nutshell, the Hireko Quick Shaft Reference Guide saves times from sorting through 57 pages of shaft in our catalog or thumbing through countless web pages to find a suitable shaft.

The Hireko Shaft Reference Guide is just another example of how we are committed to educating our customer base and making ordering or selecting shafts more efficient.

> CLICK HERE TO DOWNLOAD THE 2014 DYNAMIC SHAFT FITTING ADDENDUM

Understanding Shaft Geometry and the Effects on Ball Flight

Key Golf Shaft Variables To Learn When Shopping For Your Next Set of Clubs or Re-Shaft Project

Following our back-to-school theme, last week I spoke about how the geometric shape of your putter grip could improve you putting.  Today, we are going to switch to golf shafts and show you a few things to look for when looking to re-shaft or purchase your next set of clubs.

Did you ever wonder why certain golf shafts hit the ball higher or to the left or right more than others? This has to do with a number of parameters, one of which is the shape or geometry of the shaft.  Let’s take for example parallel tip steel iron shafts. The majority of men’s flex parallel tip steel iron shafts have a tip diameter of 0.370” so they can fit into numerous heads across the industry and a butt diameter of 0.600” to accommodate the majority of golf grips.  The geometry between these areas is what alters the ball flight.

Golf Shaft AnatomyIf you look at steel iron shafts, each model has its’ own unique step pattern.  The stepping is done to change diameters or the rate of taper and ultimately the geometry of the shaft.  The same thing occurs on non-stepped shafts as well; the shaft becomes larger in diameter from the tip to the butt end.

Download Hireko CatalogThe step pattern may be constant, like the True Temper TT Lite with consistent 1.5” steps or an FST 115 with 1” steps.  The shaft might have variable steps such as an Apollo Shadow with 9 small ½” steps and then increasingly larger steps as you go toward the butt end. The stepping helps to identify a model.

Why does a more flexible shaft hit the ball higher in the same pattern of shaft?  This goes back to geometry as the step pattern will be the same, but the more flexible shaft will have a longer parallel tip section and shorter parallel butt section. Since the shaft is skinnier near the tip, it will allow the shaft the bend further forward prior to impact creating more dynamic loft and/or a more closed face. Conversely, if you want to stiffen a parallel tip shaft, you do so by taking more off of the tip and that will resist the forward bending.

Less than a year ago, we added a piece of equipment to help us measure shafts more precisely.  We have measured quite a few shafts already. Two of which are the Apollo Acculite 85 S-flex and a True Temper Dynalite Gold SL S-flex.  These might not be common shafts that our readers have had an opportunity to hit, but both are listed a high launching by the respectively manufacturers, had nearly the identical final frequency for a 5-iron and they are pretty close in cut weight (Acculite 85 at 87.3g and Dynalite Gold SL at 93.1g).  On paper these would appear to be similar.

Our shaft profiler measures the deflection or stiffness along the length of the shaft so you get more of a complete picture.  The following chart shows the deflection of the two shafts with the left side showing the tip end and the right side is the butt. More flex is indicated when the line is higher on the chart.

Tip Stiffness

From about 14” up from the tip to the butt end, these two shafts are nearly identical. Where you can see the main difference is tip section as the Dynalite Gold SL being much stiffer.  This is due to the fact that the shaft tapers quickly.  Instead of the entire parallel tip section remaining 0.370” up to the first step, both of these shafts has a tapered section before the first step to give them stability.  Just underneath the 1st step the Acculite 85 is 0.400”, but the Dynalite Gold SL is a whopping 0.445” below the first step!

That explains the difference as the larger cross section or shaft diameter, the stiffer the shaft becomes.  I shafted these up into identical heads and head to the range for me and others to hit as we could look at the effect on ball flight when one area of the shaft is decidedly different.  What we witnessed was the Acculite 85 would hit the ball more to the left than the Dynalite Gold SL (we were all right handed).  For those that fade or push the ball would prefer the Acculite 85 as the softer tip will help close the face at impact.  For those that pull or draw will prefer the Dynalite Gold SL. Or is it simple as that?

The reason I bring this question up has to do with clubhead selection.  While we saw a definite change in ball flight between the two shafts in the same head, we could have placed the Dynalite Gold SL in a head with more offset and the Acculite 85 in a model with less offset and you might hit the ball the same direction and height.  Just as easily, we could have had placed the Acculite 85 in a high offset head and created a draw or hook and the Dynalite Gold SL in a low offset head and produced a fade or slice.

Remember that a club is a system consisting of the head, shaft, grip and length. This is where fitting is extremely important and how our QuikFit system can help identify combinations of heads and shafts that will work harmoniously with a given player’s swing.  But now you may look at the shaft geometry in a different perspective and understand better why you may like or not like a certain shaft or why.

SK Fiber Wraith Golf Shaft

A Few Additional Tidbits About Aerotech Golf Shafts

Aerotech Golf Shafts at Hireko Golf

Hireko Golf’s Technical Director Jeff Summitt Gives Golf Clubmakers More Reasons Why The High Performing Aerotech Golf Shafts Are Such Hot Sellers

About a month ago we announced Hireko was a full line distributor for Aerotech golf shafts.  While the article discussed Aerotech’s design philosophy and briefly went over each of the product lines, there are a few pieces of information I wanted to share with you after testing the Aerotech composite golf shafts as well as heading out to the range and course with them.

Download Hireko Golf Equipment CatalogGolf Shaft Tip Heavy
On the models I tested, I found these exhibited a shaft balance point that was shifted toward the tip.  What does this mean for the golf clubmaker or even average golfers?  No need to make the clubs as long to achieve a normal swingweight.  This was especially true in the Aerotech SteelFiber iron shaft line where assembling the clubs to the same length as steel-shafted irons provided adequate heft in the player’s hands.  More material in the tip is a lead into the next topic.

Golf Shaft Stability
In looking at posts on golf equipment forums, you can get varied opinions on anything.  One of those is the feel of Aerotech graphite golf shaft line.  Before I had ever hit some of their shafts, I had in the back of my mind that they would play stiffer than most other manufacturers in the same flex based on comments that I had read.  Well, this is the reason why you don’t necessarily believe everything you read on the internet.  Aerotech’s shaft frequencies (measure of stiffness) were very predictable on all but one shaft (which I will mention later) compared to the industry mean.  The golf industry has never adopted standard for shafts flex (nor should they to allow diversity), but these would be considered average stiffness.

Aerotech SteelFiber Gofl Shafts
Where I can understand some players commenting on the iron shafts being stiffer than others has to do with the tip area.  Most graphite iron shafts are generally softer than steel, whereas the Aerotech SteelFiber golf shaft line is partially firmer due to the metal filaments wrapped around the graphite shaft core.  Therefore I wouldn’t call their shafts stiff, but rather firm tipped or shaft that exhibited a lot of stability.

I am a natural high ball hitter and bring rain down when hitting an iron or wedge.  It was a welcome relief to see my ball flight flatten out so the ball went out toward my target inside of just going high and falling straight from the sky.  That is the main difference between a shaft with a firm tip versus one that had more kick or a soft tip section.

> CLICK HERE TO SHOP FOR ALL AEROTECH GOLF SHAFTS

DSFI Information
For those that rely on the Dynamic Shaft Fitting Index (DSFI) to fit with as well as accurately compare one shaft to another, here is a supplement of Aerotech golf shaft we have tested so far.  This will be a good primer when discussing the next shafts.

> CLICK HERE TO VIEW THE AEROTECH GOLF SHAFT DSFI DATA

Taper tip golf shafts versus parallel tip golf shafts
Just like there is a difference between True Temper’s Dynamic Gold shafts in the taper versus parallel version, so too are the SteelFiber iron line.  That is due to Aerotech’s SteelFiber taper tip versions being a constant weight design in contrast to taking the parallel tip version, tip trimming for the clubhead number and then sanding the tip to form the taper.   Constant weight means just that; regardless of the raw shaft length, the shafts will all weight the same (with a small +/- manufacturing tolerance). Expect the tapered version will be progressively heavier the higher lofted the club becomes.

Claymore MX48 Golf Shaft
The enigma of all golf shafts
There always has to be one shaft in the bunch that makes you scratch your head and this time it was the Aerotech Claymore MX 48.  This is one of the sub-ultralight shafts on the market tipping the scales under 50 grams.  This happens to be a weight range I prefer and have been playing for the better part of a year and a half.  If you aren’t aware, there is a new breed of very lightweight shafts that are incredibly stable like UST’s MP4 and Project X’s PXv Tour 52 to name a few.  While I was measuring the stiffness of the Aerotech Claymore MX 48, the frequency was running about a full flex weaker than comparable weight shafts.  For those clubmakers out there that swears that a certain frequency all feel the same stiffness, you are in for a surprise.  This shaft in play felt just as stiff as advertised – at least for me who doesn’t have an overly aggressive downswing.  The very stiff tip offset the lack of stiffness in the butt end.  This is where most clubmakers access what the flex of a shaft or club is using a frequency analyzer or deflection device, which rarely tells the complete story.

However, I handed this club to one of my golfing buddies that just happen to have the same swing speed and me, but how he achieves it in a totally different manner.  His swing is more compact and aggressive and he could definitely feel more flex.  Of course this type of player will usually prefer a heavier shaft to maintain timing and rhythm and that is where the Aerotech Claymore MX 60 comes into play.

Demos
There are always little nuances with any product and golf club shafts are no different.  Don’t always just look at the basic specifications to judge whether or not you can hit a particular shaft because you could be missing out on what really fits you (or your customer). If you are inquisitive, make up a single sample or demo one at a local range or shop.  As shafts become increasingly lighter for potentially more distance and more and more graphite-shafted irons go into play on the major tours, people will be looking for places they can hit some of these shafts to see if it might make their game improve as well.

For professional clubmakers, look at the trends and incorporate those types of shafts into golf club demos.  If you do, then you’ll likely become to destination place for local golfers to go try and eventually buy your products and services.

> CLICK HERE TO SHOP FOR ALL AEROTECH GOLF SHAFTS

Build Your Own Golf Club Video Series from Hireko Golf

 

 

Can You Trust Independent Golf Shaft Reviews?

Use a critical eye when viewing golf club shaft reviews

One thing you do not see me write much on in our blog are golf club shaft reviews, which can be quite a few in the course of a season.  If you (and my bosses who encourage me to do so) are wondering why, it is because there is a big dilemma that occurs every time I try to put pen to paper. I have come to the conclusion that any independent review would be unfair to our readers, not to mention our dear vendors.  Any positive or negative feedback would be only as good as how the shaft fits my unique swing.  Before I can explain what I can best do to help fellow golfers find a golf club shaft they will like, let me try to explain a few things first.

Download Hireko Golf CatalogWe are all like snowflakes
You have all heard this adage a million times before.  Go to a golf course, range or even watch golf on TV and what will you notice?  Each golfer has their own natural swing…well, like a snowflake.  No one will confuse my swing with Jim Furyk’s, Tiger Woods’ or Arnold Palmer’s.  It’s obvious, the pros don’t need the exact same swing to excel at this game; nor do you. Only equipment that complements a player’s swing has to.

One of my best friends is approximately the same age and height and we both have almost identical swing speeds with all our golf clubs.  I’ll take a new club with the shaft du jour or one that I happen to like.  He will go to hit it and says it doesn’t feel good.  The ball flight substantiates his claims too.  Then he will hand me a club he raves about the performance and feel.  I’ll end up telling him, “Meh”.

Golf Shaft fitting is all about swing speed isn’t it?
The answer to that is a big no!  While golf swing speed is a starting point, it does not tell the whole story. Speed tells you how fast an object is moving.  But the other piece of the puzzle is how and when the player loads and unloads the club.

Basics of Golf ClubmakingTo put this in perspective, loading is a force a player puts onto the golf club or golf shaft during the downswing.  The magnitude of this force is caused by the acceleration or the rate of change in the velocity during the course of the swing.  One example might be where one player exerts a very large acceleration at the initial part of the downswing. Another golfer might gradually accelerate the golf club until some point and then he/she may accelerate the club again immediately after releasing the club prior to impact. The point I am trying to make is the amount the shaft loads (or deflects) can vary even though the same swing speed is achieved at impact.

Then golf shaft fitting is all about the golf club’s frequency (butt stiffness) isn’t it?
The answer to that is a big no as well.  Recently I took three identical length golf hybrids out to the range for me and my friend to test.  Each also had a different shaft (although they were all labeled S-flex by each manufacturer).  I had to sort through my collection of golf shafts to find ones that were the same frequency (measure of shaft stiffness) and where the weights were with +/- 1 gram of one another.

Many clubmakers would assume that just because the weight, length, torque and frequencies were near identical, that these would play the same.  If you follow the Dynacraft Shaft Fitting Index I have been testing and publishing the results for the past twenty plus years, you would already know this isn’t always the case. Plus I recently acquired a new toy (called an EI Golf Shaft Profiler)  for my R&D lab that examines shafts better than what I had been using and I wanted to test a theory eliminating as many variable as possibly to come up with a conclusion.

Understanding stiffness distribution along the length of the golf club shaft
Here is a plot of deflections of those three golf shafts from the tip (left side) to the butt end (right) using a shaft profiler. To understand this chart, look at Series 3 or the deflection curve plotted in light green.  Near the tip, the deflection is far less than the others, indicating this is a stiffer tipped shaft.  When we get to the area 16” from the tip, these all have the same deflection.  As we get closer and closer to the butt end, the deflection is once again much less on the green plot line denoting a stiff butt section.  The blue line or Series 1 would have the softest tip.

Golf Hybrid Deflection Chart
My friend didn’t know the differences between these golf shafts prior to hitting them as not to form a bias.  Handing him one after another to hit, he indicated the Series 3 felt the best (most solid) to him after hitting several shots.  When he hit Series 1 (blue), he felt that it was too flexible like he had to be careful how he swung it in order to control it – something he didn’t have to worry about with the other shaft.  Remember now, these all have identical weights and frequencies (stiffness).

What he had discovered was the difference in stiffness distribution along the length of the golf shaft giving it its own unique feel. Now you know why each manufacturer produces a wide variety of golf shafts although they may be labeled R or S flex and have the same weight to appeal to specific tastes.

So how good would my golf shaft reviews be anyway?
Like I mentioned before, golf shafts that I like he doesn’t.  I hit these same three golf clubs and found the club with the Series 1 (blue) shaft to be by far the best for me.  As a matter of fact, according to the launch monitor I was 14 yards further than with the Series 3 golf shaft and with no difference in swing speed.  Well guess what, if I had given my review of these shafts, one would have been stellar and the other not so stellar.  Not to mention, if he had read the review knowing that our age, height and speed were nearly identical, he might have bit the bullet and bought the Series 1 shaft instead of the Series 3 he really liked.

How I can help golfers find the right shaft
Part of my job is to help educate customers on the products we sell.  It is not to tell which products that performs well for me and those that do not. However, if I do find a product that performs well for me, I make sure to know as much about it as I can so that I can find similar shafts to it.  The vehicle that I have used to express these findings has been our annual Hireko Golf Club Shaft Fitting Addendum which is available for free to download. By using our new measurement tool and building a better library of shaft profiles for customers and fellow clubmakers to access, they will have a better grasp of what shafts to confidently choose.

I took apart several of my golf drivers that I use in my rotation to see how their golf shaft profiles compared.  Here is a plot of 4 of them plus one additional one I threw in that I didn’t fare well with.  Can you guess which one it was? That’s right it was the one in aqua (light blue), yet again the same basic frequency as the others. One thing of note, some of these shafts are labeled by the manufacturer as regular and others as stiff, but doesn’t really matter as long as the numbers are the same.

Golf Driver Deflection Chart
Now whenever I go to the range to test a new head I have to remember to make another one up with a shaft profile my friend already likes otherwise I am not going to get any feedback on the head, only grief about the shaft he doesn’t like.

What type of golf shafts are right for your customers?
First, utilize something like our Hireko Golf QuikFit system so you can interchange different golf shafts onto the same head to eliminate all but one variable (shaft).  But more importantly when you go to set up you demo golf shaft collection, make sure to get shafts that vary from one to another so you can maximize your investment – absolutely no duplication to avoid confusing your customer and tying up your money.  Lastly, read as much as you can and personally try out the products you offer so you are intimate with them.

Check Out The New SK Fiber Shaft Webinar Led By Shaft Expert Charlie Blume

We just completed our newest webinar discussing the“SK Fiber 2009 Golf Shaft Line ” that was held May 15st.

Charles Blume, owner and designer of SK Fiber Shafts discussed not only the new 2009 SK Fiber Shafts, but existing product and what makes SK Fiber shafts so unique. The webinar lasts 50 minutes and is divided into 6 sections. Charles is an industry veteran and extremely dedicated to his shaft creations.

SK Fiber Golf Shafts 1 of 6
SK Fiber Golf Shafts 2 of 6
SK Fiber Golf Shafts 3 of 6
SK Fiber Golf Shafts 4 of 6 ;
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SK Fiber Golf Shafts 6 of 6