Basics of Golf Club Shaft Trimming

Basics of Shaft InstallationUnderstanding The Principals of

Tip Trimming Instructions

Thursday June 4, 20092-3PM Eastern Standard Time

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with Jeff SummittTechnical Director, Hireko Golf

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…did you ever play the game Simon says as a kid?

Remember the phrase your father, grandfather or shop teacher said:“Measure twice, cut once”?

Shaft trimming procedures use these same basic principles

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Why trim the shaft at all? • Manufacturers produce longer-than-normal raw length

shafts to accommodate a wide range of golfer’s heights

• Trimming the shaft also controls the flex

• Each manufacturer has logical reason why they suggest the recommended trimming

Anatomy of the ShaftUnitized – To decrease inventory, one shaft can be used to build an entire set of irons and one shaft can be used to build an entire set of woods through successive trimming of the tip section.

Parallel tip - The tip is one constant diameter up to a certain point on the shaft.Typical diameters are typically .335" and .350" for woods, and .370" and for irons.

Taper tip - The tip is made to gradually increase larger in diameter from the tip up to a specified point on the shaft. Taper tip steel shafts are made with a .0075"/ inch tapering rate on irons up to the beginning of the tip parallel section. A common tip taper diameter for OEM irons is .355".



Do You Trim the Butt, Tip or Both Ends? It often depends upon the length of the

parallel tip section, for instance:

Unitized steel shafts have long parallel tip sections and generally are trimmed

in ½” increments per club.

Graphite shafts generally have shorter parallel tip sections than steel.

Therefore the shafts might be trimmed in smaller increments per club, but can

be as much as ½” too.

Tapered shafts cannot be tip trimmed – everything comes from the butt end otherwise the shaft will not fit inside

the corresponding hosel diameter.

Where do you find the trimming information? • Shaft manufacturer’s website

• Component companies will either place this information in their catalog, website or send out on a piece of paper with each order

• Charts and nomenclature may be different from each manufacturer, results the same



Hireko’s Trimming Information Method 1. Find the shaft specification table in catalog or on the website



Hireko’s Trimming Information Method 2. Look up trim chart and club head # for tip trimming amount (if any)

Hireko’s Trimming Information Method 3. Pay attention to any trimming notes that may apply

TRIMMING NOTES

1. For M1 metal woods add 1 1/2" tip trimming, for M2 metal woods add 1" tip trimming, for blind bore add 1/2" tip trimming, for through bore do not add to tip trimming. (Applies only to those shafts which have a Trim Note 1 next to the letter code)2. For non-bore through iron heads, trim 1" additionally from the tip. (Applies to True Temper's TT Lite R&S iron shafts only!) 3. For fairway woods, tip trim 1" (Applies to Aldila NV, NVS, DVS, VS Proto and Voodoo woods only!) 4. Do not tip trim more than 3” off the tip (applies to Select New Image woods and junior composite woods only!)

Remember to read the small print…

Bore Types: Woods



Bottom of Bore to Ground Line:Hybrids, Irons and Wedges

• Pay close attention when mixing and matching club

head models with different shafts

• Use the same principles used in woods to

standardize trimming in order to maintain flex

• Insert shaft into the hosel and measure overall length, subtract the raw length of the shaft yielding the bottom of bore to ground line

Combination Flex ShaftsThere are five primary flexes. These are referred to as “discrete flexes”.

Ladies (L), Senior (A), Regular (R), Stiff (S) and Extra Stiff (X)

Shafts can be made to possess two (or more) separate flexes within a single shaft. These are commonly called “combination flex” and used to cut down on inventory.

Combination Flexes Manufacturer’s Designations L and A combination flexes A&L or A/L R and S combination flexes R&S or R/S A and R combination flexes A&R or A/R S and X combination flexes S&X or S/X



Combination Flex Shafts: Examples, Hybrids, In-between flexes

MANUFACTURER / BRAND SHAFT TYPE FLEX(S)

TRIMCHART

TRUE TEMPER Dynalite A&L Iron L AA

Dynalite A&L Iron A BB

Dynalite R&S Iron R AA

Dynalite R&S Iron S CC

2009 HIREKO TIP TRIMMING TABLES FOR IRONS & HYBRIDS Hybrid Hybrid 1 iron 2 iron 3 iron 4 iron 5 iron 6 iron 7 iron 8 iron 9 iron Wedges

216g 223g 229g 236g 243g 250g 257g 264g 271g 278g 285g 291+g

AA 0" 0" 0" 0.5" 1" 1.5" 2" 2.5" 3" 3.5" 4" 4"

BB 0" 0.5" 1" 1.5" 2" 2.5" 3" 3.5" 4" 4.5" 5" 5"

CC 1" 1.5" 2" 2.5" 3" 3.5" 4" 4.5" 5" 5.5" 6" 6"

…and when in doubt, double check with a reliable source

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Jeff Summitt,Technical [email protected]

Technical Support 800 942-5872www.HirekoGolf.comSales 800 367-8912

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Basics of Golf Club Shaft Trimming