raggmann54 and find them to be very helpful, friendly and very informative
Indeed, I also did send my paper to André Thaon d'Arnoldi a french clubmaker who sells himself as a disciple of Tom Wishon. I got a couple pedantic and haughty replies my work is completely wrong and useless and I should take lessons from Tom Wishon before making clubs. When I told him Tom already replied to me "your work is a welcome and potentially valuable contribution" he stopped replying.
The guy piggy bags on Tom's work and took a patent on MOI balancing clubs adding counterbalancing to have them same SW as well 🤣. I understand his reaction since my work mathematically proves his patent is selling snake oil : you can't balance different length clubs at the same time on MOI on two different axes, wrist and elbow (=SW). But I love people who try to argue with maths.
I did build a 18½” fulcrum and measured a MOI demo set I had in my cuppoard, the clubs all have the same reading as well on that fulcrum. I measured the MOI @ 10¼" (elbow) of my SW iron set and they have all the same MOI as well. My calculations are confirmed by real measurements.
I changed my hybrid, wood and driver that have lighter shafts then my irons to have the same MOI @ 10¼" as well and the results were instananiuos : better ball striking with the hybrid and fairway, not much change to the driver, exept that now it feels a little to heavy. I'm in the process of fine tuning the driver to my sweet spot and next I will do the same with the irons (it's been 10 years since I fine tuned them to my game, so it is about time). Rather time consuming since I do on the course testing, taking note of the misses in real conditions taking into account the fatigue at the end of a round. But it wouldn't surprise me that the sweet spot for my driver and irons will have the same MOI @10¼".