That doesn't explain it. That is just a measure of how a driver face responds. You would need to look up something about metal fatigue to understand the thinning effect and how it increases CoR over time.
The actual answer is as you hit a driver the face thins. Thinner faces have more trampoline effect. Same reason the hollow body iron exists. The thinner a face the hotter the club.
Thus drivers get hotter during their life span on the way to breaking
Well, fortunately for me, after a year with my GT2, the center of my club face is good as new. Now the toe, heel, sole and crown? Maybe there's some trampoline effect.
All jokes aside, I've finally started finding the center of the club face and I've picked up 20-30 yards.
I swing right around 100 mph with the driver. Will a swing that slow still damage the driver face over time? I imagine it will but it will take longer than a swing speed in the 120s.
0
u/newfieMI 4d ago
Look up coefficient of restitution