True Frequency Technology®
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 and 13 wood shafts.
True Frequency Technology® is now available to Clubmakers everywhere. Please see our Clubmakers Registry page for details on how to purchase the rights to use.
Required: A copy of Excel on your computer, a Frequency Machine for shaft profiling and a tip weight – no specific weight is required as this is a sorting methodology.
The TFT 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. A weight is required and should have been supplied with the frequency machine.
Option 1 – Hard slope (TFT default) – The hard slope will increase the total range – or produce a steeper slope. This sort will often yield a more traditional rate of change in the range of 3 – 5 (CPM) for every ½ inch of playing length difference. The softest shaft is assigned to the longest club to help get the ball airborne, and the stiffest shafts are assigned to the wedges for slightly lower ball flight and improved dispersion.
- The softest 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 – The softer slope is designed for those looking to have slightly softer shafts in their wedges (increased spin) and a slightly firmer long iron for a slightly lower ball flight. This soft slope option will often yield a reduced rate of change in the range of 2 – 4 (CPM) for every ½ inch of playing length. The stiffest raw shaft is assigned to the longest club, and the softest 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 club maker 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.
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 True Frequency Technology® slope or curve (TFT Value consistency) is the key factor.
A perfect slope or curve 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. True Frequency Technology will allow more consistency to be built into your set.
Raw stage sorting through True Frequency Technology® will simplify your high end build efforts and drastically improve the end result, feel and consistency for your player.