Frequency Matching Golf Shafts

By Ed Mitchell, PGA


Frequency is used to produce a “matched set of clubs” of the same flex feel. This is made possible by measuring and comparing each shaft’s frequency in a set of clubs to a desired gradient on a chart. The gradient can vary with different shaft designs and geometry. It is important to know how the shaft’s geometry relates to a golfer’s “feel”.

All shaft manufacturers design their shafts to produce certain ball flight results and to a specific “flex feel”. Typically, shaft manufacturers label their shafts’ flex designation with a letter L-A-R-S-X or a word like FIRM, SOFT of STIFF.

The problem for golfers is that one manufacturer’s flex designation can be totally different from another’s. Frequency can be used to compare these different designations for the actual “feel” best suited for individual golfers.

Frequency of golf shafts is measured in “cycles per minute”, or commonly referred to as CPM. The rate of frequency (CPM) is not dependent on the amount of force required to create the oscillation.

The advantage of a frequency matched set of clubs allows a golfer to swing each club in their bag with the same tempo to achieve maximum club head velocity at impact for ideal ball flight.

Frequency is also used to match a shaft when replacing a broken shaft. It is used to determine the flex of a golfer’s favorite club for building other clubs with similar shafts. It can be used to measure the symmetry of a shaft by comparing the CPM reading around the shaft’s circumference in 6 equal 30° planes. When the CPM varies 3 cycles or less the shaft is considered to be symmetrical.

Mitchell Golf is proud to introduce its DigiFlex 2.0 Frequency Meter. First introduced in 1994, the DigiFlex Frequency Meter has set the standard in the golf industry for accuracy and reliability.

The new DigiFlex 2.0 uses a laser beam to accurately measure CPM’s in .01 increments and has the capability of selectable averaging from 1 to 5 readings to compare the consistency of each shaft to match a complete set of clubs.

It is powered by a Lithium battery for hours of operation, can be charged and powered from any standard USB port and is operational during charging.

The DigiFlex 2.0 Frequency Meter reads and displays values from .5 CPM to 30,000 CPM should you have a need for this range of frequency. The display is customized to the customer’s personal or business name.

The new system is complete with a constant pressure clamping vise that has been a hallmark for accuracy of the DigiFlex Frequency Meter for years. The clamping vise comes with both an interchangeable shaft clamp and a tapered-contoured grip clamp for measuring frequency of raw shafts or gripped clubs regardless of the grip durometer or size.

The new DigiFlex 2.0 Frequency Meter has a unique feature with its measuring and display box mounted to a bearing plate that is attached to a precision ground slide rail for properly positioning the meter to accommodate different club lengths from 30” to 48”. No other frequency system offers this adjustability.

The DigiFlex Frequency Meter is the only system that measures the shaft frequency in a horizontal plane thus removing the influence of gravity. This feature produces accurate and consistent readings. Systems that use vertical oscillation are influenced by the effects of gravity to a greater degree and are not completely accurate due to inconsistencies.

The DigiFlex 2.0 Frequency Meter uses state-of-the-art updateable firmware making it future proof. Add this state-of-the-art frequency system to your club building and repair business or upgrade your old DigiFlex Frequency Meter today.

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