# What Is Cpm In Golf Shaft?

Simply put, CPM stands for “cycles per minute,” which measures the frequency of a golf shaft. To obtain this measurement, a fitter or club builder places the grip end of a golf club into a clamp, then pulls on the tip section of the shaft and releases it to make it oscillate.

## How many CPMS are there between each flex?

Also it should be noted that there are 12 cpm’s between flexes, meaning that a shaft measuring 300 cpm’s is one full flex softer than a shaft measuring 312 cpm’s. This, however, does not mean that two different types of shafts which measure at the same frequency will play the same.

## What is FCM golf shaft?

* FCM stands for Frequency Coefficient Matching. The FCM system is based on cycle per minute (CPM) data from golf shaft oscillation tests. The higher the cycles per minute, the stiffer the shaft.

## How is golf shaft stiffness measured?

Today, frequency analyzers are commonly used as another way to define the stiffness of a club by clamping the butt end and plucking the head to put it into motion. The frequency analyzer measures these movements and calculates how many cycles per minute (cpm) the shaft would oscillate over the sensor.

## What does a tip stiff shaft do?

In most cases, tip trimming a shaft makes it meaningfully stiffer. It also increases torsional stiffness, known as “torque,” which is a shaft’s resistance to twisting. On the other end of the shaft is the handle, which is also generally trimmed some amount when building a golf club.

## What is a 6.5 shaft flex?

Stiff – 6.0. Extra Stiff – 6.5. Extra Stiff Plus – 7.0.

## What is a 4.5 shaft flex?

Yes the 4.5 means senior shaft the 70 means the grams and the flex of the shaft that’s what the guy from Mizuno told me like 70 is extra stiff the way I understood it is that right or wrong thank you.

## What does 60 mean on a golf shaft?

These numbers are the weight of the shaft in grams. Shaft weights typically range between 50 grams and 85 grams with the 50-60 numbers being pretty common as seen in the example shafts above. Shaft Weight is important because it can help you generate club head speed and increase the distance you hit the golf ball.

## What is tip and butt flex?

The difference being that the tip end is clamped and the load is applied to the butt end of the shaft. The more a shaft bends in this configuration, the softer the tip. Tip flex has a similar effect on performance as static flex, in that the softer the tip the greater the launch angle and spin rate.

## Are all regular golf shafts the same?

Shafts can range anywhere from 40 to 135 grams. Typically the rule of thumb is that a golfer with a slower swing speed will benefit from using a lighter shaft, and you would add weight as swing speed increases. There are players on the PGA Tour using lighter driver shafts with swing speeds upwards of 115-120 mph.

## What do golf shaft flex numbers mean?

Shafts come in five flex categories: extra stiff (X), stiff (S), regular (R), senior (A) and ladies (L). Generally, the faster your swing the speed, the stiffer the shaft you will need.

## How do I know what flex shaft I need?

Some General Guidelines About Shaft Flex

1. Take a look at the distance you hit your driver.
2. If you have a very smooth swing, you might benefit from a softer flex even if you swing fast.
3. If your drives go left, you might benefit from a stiffer flex; if your drives go right, you might benefit from a softer flex.

## How fast should you swing a 7 iron?

An average golfer will swing a seven iron about 75 mph. This number can change based on the weight of the club and if it is steel or graphite. The faster you swing a seven iron, the further it will go. If you can swing at about 85 mph, you will see distances closer to 165 yards.

## What happens if your golf shaft is too flexible?

If the shaft is too flexible, you will have a ‘whippy’ feeling in your hands, and you won’t be able to feel the clubhead on the downswing. When the golf ball is struck it will generally have too much spin if the shaft is too flexible, this will cause a ‘ballooning’ effect on the shot and it will tend to go quite high.