Pre Calculating Swingweight

[thefootwedge]

Dear all,

I came across the article/charts below at the weekend ( I know it is few years old). Apart from the length, how do the weights and swing-weights stand up to todays modern clubs.

I am more concerned with the bottom chart STANDARD SWINGWEIGHTS CALCULATING THROUGH A SET rather than the SWINGWEIGHT FACTORS chart

Are the any other charts for todays more modern clubs out there?

Pre-Calculating Swingweight

Swingweight Factors
Swingweight Change	Increase Factor By	S.W. Factor	Decrease Factor By	S.W. Change
+1	2 Grams	Headweight	2 Grams	-1
+3	1/2 inch	Club Length	1/2 inch	-3
-1	4 Grams	Grip Weight	4 Grams	+1
+1*	9 Grams	Shaft Weight	9 Grams	-1*

The shaft swingweight equivalent is for illustration purposes only. Unlike the other three factors, as shaft weight changes its effect on swingweight changes at a disproportionate rate. For estimation purposes, however, the above shaft weight-to-swingweight equivalent is acceptable.

Standard Swingweight Calculatin Through A Set
Club	Headweight	Raw Shaft Weight	Grip Weight	Club Length	Swingweight
1 Wood	198g	125g	52g	43"	DO
3 Wood	208g	125g	52g	42"	DO
4 Wood	213g	125g	52g	41.5"	DO
5 Wood	218g	125g	52g	41"	DO
7 Wood	228g	125g	52g	40"	DO
1 Iron	230g	125g	52g	39.5"	DO
2 Iron	237g	125g	52g	39"	DO
3 Iron	244g	125g	52g	38.5"	DO
4 Iron	251g	125g	52g	38"	DO
5 Iron	258g	125g	52g	37.5"	DO
6 Iron	265g	125g	52g	37"	DO
7 Iron	272g	125g	52g	36.5	DO
8 Iron	279g	125g	52g	36"	D0
9 Iron	286g	125g	52g	35.5"	D0
PW	293g	125g	52g	35.5"	D3
PW	305g	125g	52g	35.5"	D6

 

Raw Shaft Weight is based on a 45" UDWS (parallel tip True Temper Dynamic S-flex for woods) and a 39" UDIC (parallel tip True Temper Dynamic S-flex for irons). With proper trimming and installation, each shaft's weight will drop slightly through the set. Grip weight is basded onthe average weight of an M58 Golf Pride Men's Green Victory rubber grip. Although both the UDWS and UDIC shafts possess .600" butt diameters, most clubmakers purchase M58 (.580 core) grips. Therefore, the above chart reflects the installation of a .580 core grip. Traditionally the sand wedge and pitching wedge are designed to play at higher swingweights than the 1-9 irons. Shaft balance point is a parameter that is dependent upon specific shaft trimming. This shaft characteristic may have an impact on swingweight as well, particularly with a tip heavy or butt heavy design. This table appeared in Clubmaker's Digest, Vol 11, Number 4. Issue No. 90

Thanks in advance
 Pre calculating swingweight.doc

http://clubmaker-onl...ht.factors.html

Pre calculating swingweight.doc

[mvmac]

Are the any other charts for todays more modern clubs out there?

Probably not, too many options with different head designs, shafts and grips.

[WUTiger]

Dear all,

I came across the article/charts below at the weekend ( I know it is few years old). Apart from the length, how do the weights and swing-weights stand up to todays modern clubs.
I am more concerned with the bottom chart STANDARD SWINGWEIGHTS CALCULATING THROUGH A SET rather than the SWINGWEIGHT FACTORS chart
Are the any other charts for today's more modern clubs out there? ...

The top chart, Pre-Calculating Swingweight, appears accurate. These match the GolfWorks ratios for  {head + shaft + grip weight} and their influence on swingweight. Swingweight machines are standardized in the measures they yield, as to length and weight influences. 

As for Standard Calculation... Through a Set, you will see lots of variance by era, and from OEM to OEM, and often differences between Players, GI and SGI clubs from the same manufacturer. Head weights will vary for a given club from model to model. Also, OEMs will vary the length of given irons. A number of factors: longer shafts increase leverage - hence distance, assuming player can control longer shaft; people are getting taller; lighter shafts that are longer can keep swingweight feel the same. Here is a walk from the early 1970s until today, sampling the length of a set's 5 iron:

Year	Maker	5i length
1972-74	12 of 14 OEMs †	37”
1985-86	31 of 40 models by major OEMs †	37.5”
2007	Calla X20*	37.75”
2008	Calla X20 Tours*	38”
2014	TM SLDR*	37.75”
2015	Calla XR Pro*	38”
2015	Calla Big Bertha*	38.5
2015	Nike Vapor Speed*	38.75
† From Maltby, R. (1995). Golf Club Design, Fitting, Alternation & Repair, 4th ed.  Newark, OH: Maltby Enterprises, pp.  844 and 854.       * From respective OEM’s web site.

 

 

Edited October 22, 2015 by WUTiger
Tried to remove air space from table, via spoiler.

[saevel25]

Probably not, too many options with different head designs, shafts and grips.

Pretty much this. There really is not standard in the industry anymore. Though most companies will put what the swing weight of the club is. Some companies are able to change a few things on the club to increase or decrease it. 
 

---

Swing weight is just the measurement of how much weight is on the left of the 14" point from the butt end of the club compared to the right side. 

Its tough to say how much swing weight will change with the shaft. Today with light weight shafts and different ways they can make them cutting off 1/2 and inch may or may not take of 3 swing weights. Adding weight to the clubhead or grip should change the swing weight as said in that table above. They are still measuring it the same way as they always had. 
 

[iacas]

Swing weight is just the measurement of how much weight is on the left of the 14" point from the butt end of the club compared to the right side. 

That's not true. The distance from the fulcrum matters too.

[thefootwedge]

I was hoping someone may know the "standard" (or as good as) head weights for todays clubs but I thank you all for your input.

[mvmac]

I was hoping someone may know the "standard" (or as good as) head weights for todays clubs but I thank you all for your input. 

https://www.golfsmith.com/pdf/cm_intro_irons.pdf