Tru-Fit
Custom Clubs
Performance Fit----Precision Built
One Club at a Time
Phone:518-782-7101
Fax: 518-782-7101
Email: tony@tru-fitclubs.com
www.tru-fitclubs.com

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Shaft Geometry  through EI (Elasticity Index)
Most shaft designers use EI to describe the bend profile of a shaft.  Below you can see the shaft geometry of 4 different shaft models. 

The golf shaft is the transmission of your golf swing.  Your style develops energy in a way unique to you.  The shaft delivers that energy to the head.  Much like an automobile, the transmission must be matched to the engine. 

How a shaft performs in your hands is a complex matrix of factors.  Assuming that a shaft that works for your friend or golf professional will work for you is a longshot.  It's like assuming the clothes they are wearing will fit you.

Informed performance testing will find your best fit.  A properly fit golf club will stabilize your swing into repeatable patterns.  It will reduce dispersion and maximize distance.  This leads to accuracy and lower scores. 
Below are 4 different models of shafts, all R Flexes, and all from the same company.  Think all shafts perform alike?