4088 Natural Golf Grip Design

8/4/2019 4088 Natural Golf Grip Design

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Golf Grip Design:

Natural GolfBurkhart, James

Christopher, Steven

Schmidt, Andy

Thomas, Art
http://www.naturalgolf.com/


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Natural Golf & IUPUINatural Golf

Natural Golf Swing (Moe Norman)

100,000 Customers

Think out-of-box

Quality Products

Localized Training


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Natural Golf & IUPUIIUPUI

Leader in engineering education

Capable Senior Engineers

Current project with IUPUI FortWayne

Scientific Design


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Why a New Grip?Increase SalesNeed story to tell

Need features to sell

Meet customer desiresIncrease distance

Increase accuracy

Increase Comfort

Reduce Vibration

Reduce Slip

Reduce Torque


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BenchmarkingNo Industry DataNo Standard Testing

No Specific Engineering SpecsMeasurable Specs

Distance (Yd)

Accuracy (Ft)

Slip Resistance (G)

Vibration (Hz)

Torque (Ft. lb.)


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How to Measure?Distance traveled

Accuracy from the pin

Vibration test

Slip Resistance

Torque

Weight Verification


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Distance & AccuracyThree identical clubs

Three different gripsOne Natural Golf Expert

Laser and Tape Measure


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VibrationFixture & Layout


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Dont Slip (Dry or

Wet)Fixture & Layout


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TorqueAnalysis & Formula

T = F*rperpendicular


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Improvement GridBenchmarks

EngineeringRequirement

DirectionofImprovemen

t

UnitofMeasure

Lamkin(Buster)

Scuti(BigLite)

Enlow

NaturalGolf(Palm

Grip)

DesignTarget

Distance Traveled = Yards 114 111 n/a 115 110+

Distance from Pin = Feet 19 24 n/a 20 20-

Vibration < Hz 0.0093 0.006 n/a 0.008 0.006-

Torque* < In-Lb 36.4 47.7 n/a 39.9 50.0+

Weight =Industry

StandardD3 E0 n/a D2 D1 or D2

Slip Resistance (Dry) > Grams n/a 339 180.5 281 300+

Slip Resistance (Wet) > Grams n/a 175.5 156.5 175 175+


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Constraints to

CreativityUSGA Rules

Cant be shorter than 7

Cant have bulges or waist

Cant have ribs or indentationsgreater than .04


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Experts OpinionRealistic Improvements

Reduce Vibration

Reduce Slip

Reduce Torque

Guaranteed Sustainment

Distance

Accuracy


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Materials to be

TestedMaterial Hardness Density (g/cm3)

Silicone 60A 1.34

Polyurethane (High-Density)

60A 1.32

Polyurethane (Low-

Density)

40A 1.26

Neoprene 75A 1.29

Nitrile, Buna-N 75A 1.26


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Results (Vibration)Able to reduce to nearly 500 Hzwith Low-Density Polyurethane

Material Frequency (Hz)

Silicone 1167

Polyurethane (High-Density) 633

Polyurethane (Low-Density) 533

Neoprene 1267

Nitrile, Buna-N 1633


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Results (Slip

Resistance)Low-Density Polyurethane

Demonstrated Best Results

Silicone Low-Density

Polyurethane

High-Density

Polyurethane

Nitrile

(Buna-N)

Neoprene

Dry (g) Wet

(g)

Dry (g) Wet

(g)

Dry (g) Wet

(g)

Dry (g) Wet

(g)

Dry (g) Wet

(g)1

171 153 200 145 80 79 125 102 170 122

2170 157 210 135 85 81 120 108 168 124


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Results (Torque)Oversized Design ReducesTorque from the Shaft by

Over 60%


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ResultsBenchmarks

Engineering

Requirement

Directionof

Improvement

UnitofMeasure

Lamkin(Buster)

Scuti(BigLite)

Enlow

NaturalGolf(Palm

Grip)

DesignTarget

ExpectedResults

Distance

Traveled> Yard 114 111 n/a 115 110+ 110

Distance from

Pin> Feet 19 24 n/a 20 20- 20

Vibration < Hz 667 767 n/a 867 600- 533-

Torque < % (In-Lb) 36.4 47.7 n/a 39.9 50.0+ 61.2

Weight = IndustryStandard

D3 E0 n/a D2 D1 or D2 D1 or D2

Slip Resistance

(Dry)> Grams n/a 339 180.5 281 300+ 205++

Slip Resistance

(Wet)> Grams n/a 175.5 156.5 175 175+ 140++


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Final Design


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Questions?
http://www.naturalgolf.com/

Documents

4088 Natural Golf Grip Design