Dave:
Comment below:
And on the matter of the USGA testing of the thin face drivers I
designed that were for lower swing speeds. The USGA will conduct their
COR test at ball firing speed less than their standard of 109mph if you
tell them that the head is designed so it would not
Dave and Tom:
So it looks like we have a bit of differing opinions here. Dave, you would
suggest that the COR, for a given clubhead/ball combo, is close to a
constant for all clubhead speeds. Tom seems to indicate that the COR is non
linear enough to make a significant difference.
It seems a
Dave:
Your explanation sounds reasonable to me. I will have to have a look at that
article. I haven't read the Part III book yet.
My whole purpose of this question is this. If a company can make an at the legal
limit COR club that can withstand a 130 mph swing speed, and the COR varies only
a
Dave:
I have tried to get an answer about this question of whether the trampoline
effect (COR) varies with clubhead speed, but I haven't had much success. I tend
to believe what you are saying, that the COR for a given clubhead is pretty well
constant for all clubhead speeds. If that is the
