Ball Speed 170 mph 160 mph 150 mph 140 mph 130 mph 120 mph 110 mph 100 mph | Shaft Flex X-Stiff Stiff/X Stiff Reg/Stiff Reg A/Reg A Ladies | Vertical Launch 11° - 12° 12° - 13.5° 12.5° - 14° 13° - 15° 14° - 16° 15° - 17° 15.5°- 17.5° 16° - 18.5° | Ball RPM 3000 - 3200 3200 - 3400 3400 - 3600 3600 - 3800 3800 - 4000 4000 - 4200 4200 - 4400 4400 - 4800 |
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Shaft Flex Extra-Stiff Stiff Regular Flexible (A-Flex) Ladies | Driver Swing Speed MPH 105 + 90-105 80-95 70-85 Less than 70 | Driver Carry Distance Yards 260 + 240-260 210-240 180-210 Less than 180 | Club From 150 Yards 8 or 9-iron 6 or 7-iron 5 or 6-iron 4-iron 3-iron/lofted wood |
The EI profiling also helps to compare shafts which he believes will help predict if it will behave the same, i.e. give a player swing consistency. Bottom line is that knowing the EI profile of a shaft will help with swing consistency and assists in the club fitting process. |