This page describes the data gathered by the FitChip and presented in chart form by the FitChip computer analysis program. This data will be used in formulating the final specification of the custom golf clubs that fit the players SWING TIMING. This timing concentrates on getting the club/shaft back to straight at ball impact where your club achieves the best performance of distance and accuracy. There is no other fitting system on the market that addresses this approach with the exception of trial and error, monitoring performance, which can be limited by time, prejudice and has no way of truly identifying that the shaft is back to straight at ball impact and obtaining peak performance.
The FitChip gathers club head acceleration/club head speed data when placed on any club, which is typically shown in Figure 1. From this data the computer analyzes the data to produce the club head acceleration curve as shown in Figure 2. This curve is used to locate the time of peak acceleration or (point at which the shaft starts to kick back, time increment 126) shaft release and (time increment 173) ball impact. The red line represents the unloading of the shaft, through 1/4 cycle of its natural frequency, from the flexed position back to straight and square at impact.
In these charts two different swings are overlaid to demonstrate the players consistency or inconsistency. During the time interval, described by the red line, the club releases/kicks and must return to straight and square at ball impact for peak performance (best combinations of club head speed and accuracy). Matching this players timing with the club depends on the natural frequency of the golf club shaft as a spring. It is this natural frequency that is derived by the FitChip for each swing. Bad swings can be deleted and the best swings averaged for the build to frequency.
The frequencies (blue dots) for each swing and the average frequencies (red dots) for four different clubs are shown in Figure 3. A line drawn through these points will define the frequencies at which to build each club in a full set of properly fitted custom golf clubs, as shown in Figure 4. You can select a Linear or Curve as the best fit to the data to build the clubs to.
to build each club in a full set of properly fitted custom golf clubs, as shown in the Build-to Table Figure 4. The multiple sloped lines in Figure 3 represent the slope the Golf Industry and most Club Builders build sets too. We build your clubs based upon the slope or curve your Swing Timing requires (the red or yellow line in Figure 3) !
Most standard sets of golf clubs on the market today use identical flex category shafts tipped a consistent 1/2" increment from club to club, and then butt trimmed to the finished length. This process makes each shaft stiffer by approximately 4.3 cycles of natural frequency as the clubs get shorter. Through thousands of fittings with FitChip, we find that very few players are properly fit with this 4.3 cycle progression as predetermined by club and shaft manufacturers. Just as a standard size, off the rack suit, will not fit properly everywhere on the body, seldom does every club in an off the rack set. Thus most players with these clubs have a favorite club. Most individuals have a unique curve or line depicting their individual swing timing, and their clubs should be built accordingly Figure 5. Sometimes on straight lines, sometimes on curves, sometimes on positive and sometimes on negative slopes. Everyone is different, and unless you have a set of clubs built with this system, you will never have a fully fitted set of clubs, for which you can say, "every club in my bag is my favorite club."
From Figure 5 you can see the major differences in these players and some unexpected results. For instance the senior player has the stiffest set of clubs from this diverse group of players. This senior player had won the National Senior Amateur and was approached by all the club companies to play their clubs and of course since he was a senior and had a relatively low club head speed they put him in senior shafts. At that time he lost his game completely and came to me to analyze the problem. A FitChip fitting told us he needed the stiffer clubs and almost on a flat line. Once I built this set for him he returned to the winners circle on the senior amateur circuit. These curves were selected to demonstrate how you can not expect conventional club fitting procedures to fit players by class or club head speed. However, the FitChip system will define the perfect custom golf club fit for any players swing.
The Club Pro had the long smooth swing with the very early release requiring the slower kick of a soft shaft, However the shorter clubs required a stiffer shaft because, on purpose, he was trying for more back spin in these scoring clubs. While in the case of the PGA Pro, a winner of the PGA Championship, his longer clubs fell on the 4.3 slope but the swing timing changed in his shorter scoring clubs to a flat line to achieve more accuracy and consistency.
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