Fitting for Swingweight Part II

While fitting for swingweight is somewhat a function of the selection of the components, the factors that influence swingweight are head weight, shaft weight, grip weight, shaft balance point and golf club length. It is the clubmaker’s responsibility to fine-tune the swingweight throughout the set in some logical order. The clubmaker or clubfitter rarely fits for swingweight, other than occasionally adding some lead tape to a demo club in order to see if a customer can tell the difference or not. However, what if there was a way to fit, but also duplicate the result in a real world situation?

Not only does Hireko offer a very playable head, but also a tool that no custom clubmaker should be without. That is the Dynacraft Genesis Iron. This versatile iron has the capability of allowing a wide range of weights for true custom club fitting. You ever wonder what would happen if the swingweight was extremely low or high and how it would effect feel and ball flight. Well now you can.

For those who truly want to custom club fit for swingweight or those that MOI match, having the ability to alter the weight on the fly with a small handful of different weighted screws is extremely advantageous. Each Dynacraft Genesis iron head is equipped with a 3.5 and 10g weight, making the base weight if the iron approximately 14g less than a normal iron. This is a two club differential without the weights (i.e. a #5-iron that weighs the same as a #3-iron). Yes, you can hit the club without weights at the range to see the influence of an extremely lightweight swingweight, but not for play (see stipulations below).

Note: According to the Rules of Golf, two key rules apply with this driver when it comes to posting a score for handicap:

• Never adjust the screws during the course of a round; otherwise you will be violating the Rules of Golf 4-2a: “During a stipulated round, the playing characteristics of a club shall not be purposely changed by adjustment of by any other means.”

• In Appendix II, 4a: “The clubhead must be generally plain in shape. All parts must be rigid, structural in nature and functional. It is not practical to define plain in shape precisely and comprehensively but features which are deemed to be breached of this requirement and are therefore not permitted include: (i) holes through the head.”

For example you have a demo club (or set) built to a D0 swingweight using two 6g weights. Here are all the possibilities you can test with the various screws Hireko offers.

Weight 1 Weight 2 Swingweight
Empty Empty C4
Empty 2g C5
2g 2g C6
2g 4g C7
4g 4g C8
4g 6g C9
6g 6g D0
6g 8g D1
8g 8g D2
8g 10g D3
10g 10g D4
10g 12g D5
12g 12g D6

Take the challenge and see for yourself how the weight of the head affects your or your customer’s ball flight and distance. You might be surprised you have been playing the incorrectly weighted clubs all these years. Also, don’t forget iron impact labels.


  1. […] of the reasons for this is due to the effect of golf swingweight of the club. All the combinations of length and lie in the following chart will produce a situation […]

  2. […] steel to graphite, with graphite-shafted irons being potentially ½” longer to create a specific swingweight. In the following example, we want to show different models in proportion. The first of which is a […]

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