That is a great idea! What I would like to find out is why club fitters only seem to be concerned for the "shrinking loft disease" with drivers, or say with a 3 wood, and not irons?
I don't think that the loft on woods has really changed over the years, but irons are 4-6 degrees stronger than in the 70's. I have several sets of old Wilson Staff irons from 60's and 70's. As I recall, when I first started doing club alterations in the late 70's, a 5 iron was 37" long and 32* loft.
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A mile from the place that golf calls home
Club 60s-70s 80s Early 90s 1997-P
1 iron 17 17 16 16-17
2 iron 20 20 19 18-20
3 iron 24 23 22 20-21
4 iron 28 26 25 23-24
5 iron 32 30 28 26-27
6 iron 36 34 32 30-31
7 iron 40 38 36 34-35
8 iron 44 42 40 38-40
9 iron 48 46 44 42-44
PW 52 50 48 46-48
GW 52 52
SW 56 56 56 55-56
LW 60 60
Driver 11 11 10 9-10.5
3 wood 16 15 15 13-14
5 wood 22 21 19 17-18
7 wood 28 27 23 20-21
This is from Tom Wishon's book "In Search for the Perfect club" I am embarrassed to say that I learned a great deal from this book! Given the fact that I have been immersed in the game for a couple of decades some of the information should have been familiar to me!
I would also like to add that 1 degree of loft will impact a driver more than an iron, given the length of shaft and resulting higher club head speed.
The best driver I have ever had was a Mizuno persimmon with a 42 inch DG S-300 shaft! Not particularly long, but Funky straight! I destroyed it while taking a practice swing in the parking lot of Chenal CC in Little Rock AR...too much down!