I think one of the most important things I learned at the last Trackman user conference in Orlando this past January was the acknowledgment by Trackman (Tuxen) of horizontal and vertical gear effect while striking irons.
While iron gear effect is only fractions of driver gear effect, it is thereβ¦it is always thereβ¦and it can be the cause of what we previously thought to be measurement errors, ball defects, or general data outliers.
Physics never sleeps.