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Welcome to Dave Tutelman's Club Design Notes This e-book is about how golf clubs work, from the point of view of an engineer. But you don't have to be an engineer to understand it. There are some science basics early on (see the Principles chapter), explained in intuitive terms -- and that is the only science the rest of the book really uses. You will need to understand simple graphs or tables of numbers -- but if you don't, you're seriously limited as a clubmaker already. You can jump in where you want, or just read the chapters sequentially. I've tried to be diligent about placing links, so if you jump in and encounter something that depends on what came earlier, you will only be a click away from what you need. Note that the last time the Notes were completely updated was in 1999. I am now in the middle of a major update. There have been a lot of advances since 1999 in our understanding of what makes a golf club work. There have also been advances in hype, legislation (in the USGA and R&A) to limit performance, and some real advances in club technology and instrumentation. At the bottom of this page you will find a checklist of modifications: intended, under way, and completed.
Introduction
Physical Principles Force,
Acceleration, and Velocity
Applying
Physics to GolfCentrifugal Force Torque Moment of inertia Vibrational frequency What determines distance Club Length Lie Angle Heft What
it is, and why we care
Shaft
FlexHistory Heft and release Fitting for heft Computing heft Estimating heft Graphs of moment of inertia and swingweight Measuring swingweight Measuring moment of inertia Other Heft Issues Altering heft What
is it, and why do we care?
Customizing
The ClubsMeasuring a golfer for flex Assigning a grade of flex The
standard flex grades
Length
and tip trimmingOther flex grades: Frequency Other flex grades: DSFI and RSSR Other flex grades: TrueTemper letter-number Other flex grades: Brunswick frequency slope Frequency matching Effects of Clubhead Features Center
of gravity (CG)
Effects
of Shaft FeaturesFace angle Gear effect Grooves Lie angle Loft angle Offset Sole bounce and camber Weighting Material and manufacturing process Effects of Grip Features Special Situations Resources, References, and Bibliography Status of update:
Last updated -- Jan 23, 2011
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