ABSTRACT
This paper provides a brief view of the accuracy of several popular methods of shaft flex point measurement in terms of predicting resulting ball trajectory. A review of flex point terminology is first presented along with the concept that shaft performance can be measured in absolute terms by analyzing the ball flight that is produced. Steel and composite test shafts are measured for mechanical specifications and then tested under both machine (robot) and live golfer conditions. The resulting ball flight information is recorded and analyzed. Conclusions are made regarding the general lack of accuracy of the flex point measurements that were tested and additional research is suggested.
