I was curious hos this value is determined for the iron heads. If I’m not mistaken its weight/area is this weight divided by the area of clubface or is this measured somehow?

Britt Lindsey Answered question August 24, 2020

Britt Lindsey Answered question August 24, 2020

You can look on the internet to get the actual MOI formula if your interested, but we use two different MOI testing devices. We let these devices do the calculations. I test each club 3 times on the two devices to verify the numbers. The image of one of the devices is a the bottom of the article below and shown in Ralph’s books on MPF.

https://ralphmaltby.com/method-of-determining-mpf/

Britt Lindsey

Britt Lindsey Answered question August 24, 2020