Technical Paper

as presented at the
Professional Clumbmakers Society Annual Members Conference February 25, 2007
True Length Technology® is a registered trademark of Dan’s Custom Golf Shop

“My long irons are too long and my short irons are too short!”

True Length Technology® is my thesis to the golfing industry.

Tom Wishon said in his April 2007 E-Tech report

Fitting Outside the Traditional Box - the Concept of True Length Technology™ from Clubmaker Dan Connelly
TWGT Note: One of the most difficult things for all of us to do is to consider deviating from various accepted and “traditional” norms that have been a part of clubmaking for a very long time. For example, when TWGT introduced Clubmakers to the concept of MOI Matching golf clubs as a replacement for swingweight matching, the new concept was bucking over 80 years of the golf industry relying only on swingweight as the method of trying to make all clubs in a set offer the same swing feel. While many Clubmakers learned and now embrace MOI Matching as the best way to truly create the same swing feel for each club in the set, tons more are hesitant to even afraid to try MOI matching for fear of deviating from 80+ years of clubmaking tradition.

I first became aware of clubmaker Dan Connelly and his TLT system for length fitting through TWGT’s Rob Sines. At the 2007 PCS Show, I had the opportunity to sit down and listen to Dan’s concept which flies in the face of literally decades of the golf industry’s traditional practice of changing the length of clubs by full inch or half-inch increments. After hearing Dan’s explanations for his True Length Technology™ length fitting methodology, I had to admit his work definitely has merit and should be considered by all Clubmakers. As a result, I asked Dan to write an article about his TLT system so we could expose Clubmakers to a brand new length fitting methodology that is most definitely worth all clubmakers’ consideration.

Tom Wishon

Have you ever been troubled by the condition of “My long irons are too long and my short irons are too short”? Every set of clubs I’ve owned in my 35 years of playing this gentleman’s game have fallen into that scenario.

True Length Technology® addresses this condition through CAD modeling the entire set by correlating the lengths and lies to the golfer in their athletic address position. Imagine having one single, stable athletic address position for every club in the bag. Holding every club in the same hand position and still utilize varying lengths and lies that fit your math model, perfectly.

Formal Background

I have a strong mathematical background with precision accuracy (micro measurements) being my primary function for the last 18 years.

  • Currently a Precision Inspector (Metrologist) for the General Motors Canadian Regional Engineering Centre as a CAD programmer for the Coordinate Metrology Lab
  • Past Chairman (2 years) of the Association for Coordinate Metrology Canada - devoted to educating and understanding micro measurement technology
  • Durham College Graduate - Mechanical Technology Program
  • Certified by the Ralph Maltby’s Clubmaking Academy in:
    • Assembly and repair
    • Professional clubfitting
    • Master’s program (only 3 in Canada)
  • Certified rifle centre
  • Certified by the Golf Clubmakers Association (GCA) with Professional/Advanced Status
  • Owner of the Proprietary Length/Lie/Fitting System - True Length Technology®
  • Currently pursuing certification with the Professional Clubmakers Society

Current Trends

When I reviewed published lie angles verses length throughout the industry, the lie angle progressions did not add up mathematically to the traditional lengths.
  • Company A - Lie angles increment in ½ degree per club
  • Company B - Lie angles increment in 1 degree per club
  • Company C - Lie angles vary and don’t seem to follow a progressive pattern

How could each of these (different) lie angle designs all have (identical) finished lengths?

Address Position

During any lesson, I was always taught to “get into my athletic address position”:

  • Feet shoulder width apart
  • Knees slightly bent
  • Spine tilted forward near 30 degrees
  • Arms hanging down and slightly out from your body

When I did this my 7 iron fit and played like it was built for me:

  • Slight amount of grip cap above my hand
  • Lie angle looking correct at address
  • Hit the ball straight

However, my 3 iron would have nearly 1 inch of butt cap above my wrist at address, and my pitching wedge would be down into the palm of my hand. It seemed that there was roughly an extra 1 ½ inches between my longest and shortest clubs that just did not seem to fit my position.

Some players will adjust their spine tilt, knee bend, distance between their feet, etc. for every club in their bag. This will result in the golfer having to recall and execute 13 slightly different setup positions to maintain one common hand position. No matter how good of an athlete you are, this is still a very difficult task.

I felt that if I was a visually handicapped golfer, I would setup in my athletic position consistently - waiting for my club. Would I know the position I was supposed to be in if I was holding my 3 iron verses my pitching wedge? Would there be a difference? My thoughts were no, I am ready to hit, give me my club please.

In trying to understand how these theories worked with my existing clubs, I began to think, that just maybe, there was a more scientific approach to length verses lie relative to my athletic address position.

The Birth of True Length Technology

My first attempts at alternative lengths were building in 0.4 inch, 0.33 inch, and 0.25 inch increments, which did help, but this too did not fit perfectly. After many different attempts, I decided to try “Math Modeling” a set based on my athletic address position. As I began plotting lie angles on my CAD system, it became apparent rather quickly that any uniform increment length cut (not just ½ inch) was not mathematically correct. True Length Technology® proves that the length cut has to be progressively less per club, as your clubs get shorter and more upright.

Representation

If you picture a set of triangles and compare:

  • One at 56 and one at 57 degrees
  • One at 64 and one at 65 degrees

The length differential between the 56 and 57 degree angles are greater than the length differential between the 64 and 65 degree angles. Herein lays the proof that any static number like ½ inch or ¼ inch variation per club is not mathematically sound. Each increment has to be progressively less than the last increment as the clubs get shorter.
Information

True Length Technology® clubs do vary in length. Just in less than the traditional ½ inch increment. In fact the length variance is perfect from club to club, giving one very athletic and repeatable setup position and posture for your personal setup.

As all custom clubfitters know, one size does not fit all. Matter of fact, only one size fits you and you alone. As all custom club builders know, length and lie are imperative, but builders only have access to a few charts that are “recommended build sizes” - 2 charts for men, 1 chart for women.

If you look at some of the old Clubfitters Rules, a single “recommended length of golf club” fit over 3 ½ inches of wrist to floor (WTF) variations, except if you were a women, then your clubs would simply be 1 inch shorter. How much sense does that make? Someone with a 34 WTF is playing the same lengths as someone with a 37 WTF. This again is not mathematically sound.

Current True Length Technology® Status

The True Length Technology® system has charts that vary from a Series 0 to a Series 15, also now available 10 additional children’s charts. Every chart is a Math Model of perfect proportions for each individual series. The math behind the True Length Technology® build charts is the result your athletic address position. Not everyone addresses the ball in the same manner and therefore the target build chart is still susceptible to variation. You, as a fitter, need to find the correct series target length and build to the appropriate Series chart.

Note: WTF measurements are used, but only as a starting point within the fitting process. A full dynamic fitting is still recommended using the True Length Technology® Fitting System.

  • Hitting balls allows the fitter to be aware of swing tendencies and club head paths that do influence ball flight.
  • Individual swings certainly do play an active role in determining the correct final lengths and lies.
  • Dynamic fitting is still a necessary step due to different bend profiles of shafts, and the dynamics of the individual’s swing. The math model would remain intact if all lies within the set were altered to the same degree, resulting in an averaging out of today’s swing flaws.
  • The traditional lie board adjustment may be used for every club as an alternative to the averaging method described above.
  • The golfer who sets up with the traditional stance will often find that the WTF measurement will often correlate to the Initial Target Series Chart and will indeed be very close to the final build specification.
  • Single axis golfers and some women who carry their arms out and away from their body will in all likelihood need a set of greater length and possibly an alternative lie, deviating from what their WTF target indicated. Again, True Length Technology® is not a WTF system and traditional fitting procedures will insure a sound fitting to the individual.
  • People with disabilities that cannot get into that traditional position may need a variation in length and lie, but will end up in their best athletic position - common to every club.
  • All of the above scenarios need to be addressed by the fitter in determining what the proper “actual” build size will be. Once the Target Series Build Chart has been determined, the builder needs to build to the specifics of that Target Series chart keeping the math model intact.
  • Now available 10 additional children’s charts.

Fitting System

Each True Length Technology® fitting set has its lengths correlated with its lies - set to a perfect math model for all Series Build Charts. The golfer gets to actually swing a 4, 7, and PW that fits their math profile. When the correct Series is in your hands you will instantly know you have found your specifications for length, and a great indication of lie.

Traditional fitting methodology still does apply, where the customer needs to go through wrist to floor measurements:

  • Statically fitting with a variety of clubs
  • Hitting balls with a variety of lengths
  • Hitting balls with impact stickers
  • Watching ball flight

The most satisfying feeling is, when the correct length and lie are determined, you are confident that the entire set will fit the golfer like never before.

Feedback

Here is an excerpt from Ms. Nadine Foreman, a Teaching Professional from the Durham College Golf Administration Program in Oshawa, Ontario, Canada:

"True Length Technology has helped my game because of the confidence which I now have stepping up to every single iron in my bag. As a golf professional, I have taught the fundamentals of the game to players and taught them that they should be swinging with the same swing each and every time. However, I now realize that’s not possible, without the help of True Length Technology.

Even though I might teach the “perfect posture” as I see it, while my student is holding their 7 iron, they cannot possibly duplicate that stance and posture with their 3 iron. I found in my own game that I was so comfortable standing over my 6 - 8 irons, however when I would get to the longer irons, I had to put so much more power into my swing, to make the result happen that I wanted to.

With True Length Technology , when I step up to a wedge, 8 iron, 5 iron, or 3 iron, I get myself into my perfect posture first, and my hands are in just the right spot now without having to manipulate that club in my hands or alter my posture for the iron I’m holding.

I have control and spin with my wedges, I have the ability to work the ball as I like with my long irons. I no longer have to factor in that 15 yard draw that I know my 3 iron used to produce. I can fade or draw the ball as I need to, with the rest of my shots going straight, using my comfortable swing.

To me, True Length Technology has not only improved my game, it has improved my teaching ability and the learning curve of my students.

They can perfect that 7 iron posture and fundamentals and easily transfer it to any club in their bag.

If you have any questions please do not hesitate to contact me at any time. Next thing we’re working on is the putter!"

Kind Regards,

Nadine Forman
CPGA class "A" Professional"

Ms. Foreman is not paid to use my system, and in fact bought her set because of True Length Technology®. Her statement reflects that of pretty much my entire customer base. Once you have tried True Length Technology®, I’m confident you will become a believer as well.

FAQ

Does the shorter length separation affect the distance separation between clubs?
  • No, in fact many report back that they have actually increased distance due to more on centre hits.

How is the swing-weight affected?
  • A long set of clubs (Series 10) often will be built with the lightest head weights possible to help maintain a manageable feel and swing-weight to the set.
  • A short set of clubs (Series 2) often will be built with heavier head weights to help maintain playable characteristics, feel, and swing-weight.
  • A mid length set (Series 6) can be built to a single swing-weight or on a progressive slope (very similar to a Moment of Inertia set).
  • Sometimes swing-weight is simply a resultant that cannot be controlled due to length and actual head weights, but as a custom builder you can minimize the variation.

What happens if I need a very upright (or flat) set due to my swing (and I don’t want to change it)?
  • The entire set will need to be upright (or flattened) from the TLT standard, but in a uniform progression. If 1 club needs to be upright 2 degrees, then they all need to be upright 2 degrees. Remember, you still want to keep your math model intact.

Do wedges follow the same length/lie technique?
  • This depends on your type of wedge play. I keep the length of my gap, sand, and lob at the same length, but this means that their lies will also be identical. If you are only using half shots with some wedges than special attention may need to be taken to tune the lie as head flattening can be to a lesser degree.

Why are drivers and fairway woods built to a much flatter degree than what the actual head specification is?
  • Wood shafts are thinner in the tip area and are prone to different bend properties. As the club is swung the centre of gravity of the larger head is trying to get in line with the shaft axis at the hands. The size of the head and the location of the COG cause a higher degree of head flattening during the swing. Research has shown that woods built to their corresponding WTF charts have proven to be the most effective.

Summary

True Length Technology®
One common hand position, relative to a perfectly math modeled length and lie will result in:

  • A very repeatable athletic address position
  • A very repeatable swing pattern
  • More on centre hits
  • Less fat shots
  • Less thin shots
  • Improved feel and playability
  • Less physical stress on the body
  • Less physical stress on the body

True Frequency Technology™


Now available to Clubmakers everywhere. Please see our Clubmakers Registry page for details.

True Frequency Technology™ is a high level (but easy to use) Excel - Raw Shaft Sorting Program, aimed at simplifying, finding, and defining the Profile and Overall Frequency or “True Frequency” of a full set of raw shafts. This in turn will result in a finely tuned “True Frequency Profiled” set of golf clubs. Raw shaft data is compiled in 5" beam length increments for up to 13 iron shafts, 13 wood shafts, and an assembly tab where you get to analyze and blueprint the fully assembled set. Required: a copy of Excel on your computer and a Frequency Machine for shaft profiling the True Frequency Technology™ sort engine automatically defines and assigns a TFT stiffness value, sorts, and then reorders the raw shafts data by the overall profile stiffness. The sorted data is then plotted in a graphical format for quick visualization. The program then allows you to assign club heads to target either a (1) hard slope or a (2) soft slope.
Option 1 - Hard slope (TFT default) - Often preferred by mid to stronger players, for those who truly load a shaft, and for sure those with a quicker tempo and transition. This sort will often yield a more traditional rate of change in the range of 3 - 6 (CPM) for every ½ inch of playing length difference. If you are building to the suggested TLT increment or have less than 3 inches of total iron length differential from the longest to the shortest iron, then this should be your target. This would be the recommended option if you are building to less than 1 degree of lie separation/club.
  • The weakest RAW shaft is assigned to the longest club, and the stiffest raw shaft is assigned to the shortest club, increasing the total flex range of the assembled set relative to the CPM rate of change or curve.
  • The resultant assembled set will have a stiffer rate of change per 1/2 inch length, with a slightly increased CPM range.
  • The steepness of the rate of change or curve will be in direct relationship to the variation found in the raw set of shafts. The greater the variation within the raw set, the greater the final rate of change will be within the assembled set.
Option 2 - Soft slope - Very smooth players (who produce very little load), players with ailments, (some) seniors, women, and juniors will often benefit from the softer rate of change. This option allows more feel throughout the range of the set. Be careful as some seniors have short quick backswings and create a load that is better suited to the hard slope. This soft slope option will often yield a reduced rate of change in the range of 1 - 4 (CPM) for every ½ inch of playing length.
  • The stiffest raw shaft is assigned to the longest club, and the weakest raw shaft is assigned to the shortest club, softening the total flex range of the assembled set relative to the CPM rate of change or curve.
  • The resultant assembled set will have a softer slope with a slightly decreased CPM range.
  • The steepness of the rate of change or curve will be in direct relationship to the variation found in the raw set of shafts. The greater the variation within the raw set, the softer the final rate of change will be within the assembled set.
Both Options 1 & 2 - A “Class A” set of shafts will have very little variation (raw shaft verses raw shaft), and is sometimes attainable by measuring a few extra shafts, then eliminating and replacing the singles with the largest variation. The assembled final rate of change (or slope) will be most affected by the variation found within the set of raw shafts, so naturally the tighter the overall raw profile, the tighter the assembly will be, relative to frequency. A “Class B” or even “Class C” set of shafts will still produce a great set of clubs, but will in all likelihood have a little more variability in the final assembly. True Frequency Technology™ rates raw irons sorts by classifications from “Class A” to “Class E.” To get a “Class A” set can be difficult due to manufacturing tolerances and variability, but regardless of the final sort classification, you can be sure you will have a far superior set than that of a random build.
  • A hard slope will become an even steeper slope (with an increased rate of change per ½ inch) - when a greater amount of variation is found in the raw sort.
  • A soft slope will become an even flatter slope (with a decreased rate of change per ½ inch) - when a greater amount of variation is found in the raw sort.
  • In both cases the True Frequency Technology™ sorted graphs will display each 5 inch beam length or increment point and its calculated TFT Frequency Value. True Frequency Technology™ will organize the raw shaft frequencies through the TFT sort engine, allowing the clubmaker a final build with tighter assembled profile tolerances, virtually eliminating the need of “nibbling” - which creates an inconsistent step pattern.
  • Adhering to a 4 or 4.33 CPM rate of change cannot apply to all shafts, as different manufacturers have different intents. True Frequency Technology™ allows a constant butt to last step pattern, keeping consistency in the butt end diameter. This keeps balance points in line relative to each other, eliminating the randomness of a “nibbled” set.
  • Now that the shafts have been sorted, stabilized, and individually assigned to a club head, the tipping increment can be decided without the need of “nibbling”. I do suggest following the TLT tipping increment guide (Registered Clubmakers have this data) of progressive tip cutting - allowing a constant butt to last step pattern.
Assembled True Frequency Technology™ Data - Not only will the True Frequency Technology™ chart and graph allow you to review your final build, but it will often point out inconsistencies within your build (allowing you to fine tune and become an even better builder). If you notice a single club take a jump or dip in the frequency graph slope or curve (either up or down), then the deviation can often be traced back to the source by reviewing your build data.

These are the “true frequencies” of your build, and the True Frequency Technology™ chart and graph are an accurate representation of what you have actually built.

Consistency in the rate of change (or curve) is the most desired attribute. Deviations from this slope or curve can often be understood through analysis, allowing a better understanding into the if, where, and why an inconsistency exists.
  • Is the assembled club slightly too long (softer) or too short (stiffer)?
  • Is the assembled club too high in swing weight (softer) or too low in swing weight (stiffer)?
  • Was your “tip cutting” not as accurate, causing variation.
  • Was there a “too great” variation in either the tip or mid or butt section profile? If so this shaft maybe should have been withdrawn and replaced with a more consistent raw replacement shaft.
  • Should you have eliminated a single shaft or 2 or 3, due to an exaggerated deviation found in the raw sort?
  • A perfect slope or curve is simply not attainable - by any system, but a decent rate of change or curve with minor fluctuations is real world. Keep in mind that most golfers have a tough time detecting 1/3rd of a flex (3 CPM), where True Frequency Technology™ should keep you well within this limit. Remember, I am talking total beam length profiling, incorporating butt, mid, and tip sections (not just butt frequencies). The final TFT slope or curve of the TFT Value is the key factor. A dead flat slope (by any system) is simply not attainable and is an unrealistic goal. Deviation will always exist, be it in your ability to measure or their ability to manufacture (and a combination of both). Fluctuations will exist, so keep your expectation realistic.
  • Raw stage sorting will simplify your high end build efforts and drastically improve the end result, feel and consistency for your player.
Shaft profiling - Through the use of a frequency analyzer and a tip weight, staged length profiles (in 5" increments) are collected and entered into the True Frequency Technology™ program. The 5" increments allow enough data to be collected to have a great understanding of the raw shafts (as a set) and where their deviations lay. The True Frequency Technology™ sort engine will automatically re-order the set of raw shafts into either a hard slope or a soft slope (your choice based on the player's requirements). The entire shaft profile is important as a set, as differences can lie in the tip or mid-section, but still be identical in the butt section. True Frequency Technology™ will do the math and sort by overall stiffness prior to club head assignment.
Frequency - All data should be collected without a grip, measured in Cycles Per Minute (CPM), relative to a known beam length. A Frequency Machine and securable tip weight are required for raw shafts. Traditional methodologies have involved matching “butt” frequencies by “nibbling” away on the tip end (stiffening each shaft as required). This is a tedious method that will invite a variety of “tip to first step” variation as well as move, bend, and balance points up and down the shaft. Tradition does not consider anything past the “butt” section, which unfortunately is where a great deal of variation and inconsistencies live. A very old and limited methodology that is in dire need of an upgrade.
Butt frequency - Clamped at the grip end or the thickest section of the shaft. This is the stiffest portion of the shaft and is primarily related to the players swing speed. A faster swing speed would benefit from a stiffer butt section and is a good general rule. Butt frequency alone tells such a small part of the story. You still need to determine your target flex, swing weight, or MOI for your test club, often through experimentation, which will allow you to calculate the required tipping for the remainder of the shafts.
Mid frequency - Re-clamped in the mid-section or zone, shortening the beam length. This section is primarily related to the Players Tempo. A quicker Tempo would benefit from a stiffer mid-section is a good general rule.
Tip frequency - Re-clamped again only in the tip section (shortest beam length). This section is primarily related to the Release. The later the Release the stiffer the tip section should be.
Tip nibbling - A common practice of cutting or nibbling away at the tip end of a shaft, where the goal is to reach a target butt frequency. An inconsistent step pattern is often the end result forcing the bend and balance points to have variation. This fixes 1 scenario, but creates a deviated second scenario, resulting in a less than consistent end result.
Raw shafts (blanks) - These are uncut shafts as received from the manufacturer. The manufacturer has assigned a designated “flex” value - often in the form of L, A, R, S, and X (plus combination flexes). Unfortunately variation (sometimes large) exists within sets of the same designation. You may have ordered 8 “R” flex shafts, but this is often not what you receive. Production dates (or batches), wall thickness, balance points, weight, etc., all contribute to variation. Even when all butt frequencies are consistent, there will be a range of deviation found throughout the remainder of the shaft. These deviations are often overlooked (or even not understood) by the average Clubmaker, so a traditional “Frequency Matched” set can still have great variation in the mid and tip sections. Simple things, such as the orientation (or rotation) of a shaft can often influence the CPM value, sometimes greater than a full flex (10 CPM). True Frequency Technology™ considers all the beam lengths prior to the sort, resulting in a tighter range for the overall set. Without the True Frequency Technology™ sort, a very random profile flex can exist within your set; where club to club can exhibit some degree of flex change.
Cycles per minute (CPM) / flex - You still have to determine what flex (CPM) relative to length will best suit your customer, and yes, testing and nibbling may be required to gain this knowledge. Once you have confidence in what works best for your customer, you should know how much tipping is required for this target shaft/target head. TLT tipping increments get applied to the remainder of the shafts, after the sort, driving the build toward added consistency.
Frequency slope - Not all shaft manufacturers have the same intended slope of 4 or 4.33 CPM / half inch of length increment. These targets should not be written in stone, as they are values determined by a single manufacturer. Please do not get locked into a single “standard”, determined by one company, and apply it to all shafts. There are way too many variables and way too many different designs to be locked in to one manufacturers design intent. Different shafts react differently relative to the same amount of tipping. As a matter of fact, some shafts are not designed on a slope at all, but these shafts will still greatly benefit from the True Frequency Technology™ Shaft Profiling System. Removing randomness is an important step towards building a consistent set of irons or woods.
3 Bearing “spine finder” - No shaft is perfectly straight. The spine finder in reality actually locates the natural bend of a shaft (not the true spine). The following is how I approach the orientation and terminology. By pulling down with the hand held bearing on the tip end, the shaft will end up with the natural bend curving towards the floor. N1 and N2 represent the neutral plane (soft side and will FLO with a small amount of fine tuning). S1 and S2 represent the strong plane (hard side and should be used to support the added weight of the head) As an educational step, mark a shaft as in Figure 1 - relative to the orientation discovered by the 3 bearing spine finder with a downward pull.

Figure 1- spine finder - raw shaft - I find marking the S1 (3 o'clock) position the most effective as this mark will end up under your thumbs or 180 degrees away. This can help in aligning with the head during assembly.

As the spine (strong plane) should be used to support the head, the natural bend plane or natural curve (weak plane) is aligned towards the target. This means that the spine in the shaft needs to be rotated 90 degrees clockwise for a RH golfer - where S1 is at the bottom and N2 points to the target (as illustrated in Figure 2). For a LH golfer the spine in the shaft needs to be rotated 90 degrees counter clockwise, setting S1 at the top and N1 pointed toward the target (see Figure 3).

Note: S1 and S2 are 180 degrees from each other. In other words, a RH golfer will have S1 rotated so it is at the bottom, where a LH golfer will have S1 rotated so it is at the top. In both cases this will allow the natural curve of the shaft (and the most stable FLO plane) to be oriented towards the target. FLO will be the final orientation, tweaking the shaft orientation if needed.

Figure 2 – RH golfer – shaft orientation – thumbs on S2

Figure 3 – LH golfer – shaft orientation – thumbs on S1
Flat Line Oscillation (FLO) - I am an advocate of Flat Line Oscillation and by properly determining FLO prior to a True Frequency Technology™ sort, the resultant findings will drive even more consistency into the assembly. I suggest the orientation where the strong plane supports the head, and the natural bend plane is set to FLO down the line of flight. Picture a wooden yard stick. It has a strong plane and a weak plane. The strong plane supports the head while the weak plane flexes (and/or FLO) down the target line. If you were holding a yard stick while in the playing position the large flat face would be down the target line. It will oscillate freely at the target (FLO), while having the strong plane support the additional weight of the head.
Summary - Every Clubmaker’s goal should be to tighten tolerances of the overall final assembly, and part of that will come from a superior raw shaft sort in the form of True Frequency Technology™. Incorporating the butt, mid, and tip frequencies into the formula/sort have allowed True Frequency Technology™ Clubmakers to be a step ahead of the competition when it comes to high level builds. Please be sure your Clubmaker is aware of True Frequency Technology™ and the advantages it allows. Consistency driven by the True Length Technology™ math model, and now built to the True Frequency Technology™ profile, will bring even more consistency into your game. Shaft stabilization through True Frequency Technology™ - now available to Clubmakers everywhere.

Please see the Clubmakers Registry to obtain your copy.