Let's say if the shaft is too soft / light for you, what would your ball flight be? vice versa if the shaft is too heavy / stiff.
Also, if the club head is too heavy or too light.
thanks
The shaft becomes bent tip-forward at impact. The more so, the more loft and clubface closure. BUT, the shaft can only bend far enough to allow the center of gravity of the clubhead to align with the shaft axis. SO, using a more flexible shaft may not alter the loft and closure during collision IF the shaft in comparison was already reaching max tip-forward bend. OTHERWISE, less bend equals lower launch and more positive/less negative spin axis.
Cochran and Stobbs showed that increasing/decreasing head weight, within the normal range, make no appreciable difference in distance. Presumably, this is because as head weight is increased, clubhead speed is decreased.