FAQs : Frequency
Q8: What coefficients (flexes) are available in Frequency Matched shafts?
A8: RIFLE (woods & irons): 4.0-7.0 RIFLE FLIGHTED (irons): 4.5 / 5.0 / 5.5 / 6.0 / 6.5 / 7.0 RIFLE SPINNER WEDGE (irons): 4.5 / 5.0 / 5.5 / 6.0 / 6.5
Q9: How do I determine which coefficient (flex) is right for me?
A9: We definitely believe in shaft fitting as a part of the total club fitting. It is always best to try different flexes to find the one best suited to your swing. If possible, seek the assistance of a professional club maker (check out our CRC section) or club manufacturer to help you determine proper shaft flex.
Q10: Why is flex defined as a number in the FM system rather than a simple word?
A10: A simple word such as "regular", "firm", "strong", "stiff", etc., has no definition and is vague when defining shaft flex. How regular is regular? How stiff is stiff? In the FM system, a number that represents frequency (rate of oscillation over a specified period of time) in cycles per minute is used to precisely define shaft flex.
Q11: What do numbers like "5.5" and "6.5" mean?
A11: A golf club at 43" would oscillate in a frequency analyzer at 255 CPM to be a 5.5 flex designation. A 43" club oscillating 265 CPM would be a 6.5 flex designation. If you drop the "2" in "255" and "265", the relationship becomes apparent. These numbers of 5.5 and 6.5, etc. are all based on a club at 43" and every shorter club of the same flex designation will have a CPM increase of 4.3 CPM per 1/2". Every longer club will have a decrease of 4.3 CPM per 1/2". For example, if a club at 43" were 265 CPM, a club of the same flex designation at 42-1/2" would be 269.3 CPM (265 + 4.3). A club at 44" of the same flex would be 256.4 CPM (265 - 8.6). All three clubs are 6.5
