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Your power meter for putting may be used, if the alignment of the hash marks for 0% and 100% line up.
If not you must make a second meter as you did for the putting, aligning those 5% increments with the iron shot WGT meter, just as you did for putting.
Calculations for percent of power to hit a selected iron requires some information available to you. On the green you are hitting to is most of the information needed.
Distance to the hole in yards
The elevation of the green surface is relationship to your ball. Usually listed in feet or inches
The direction of the wind in reference to your shot line.
The listed maximum distance the club selected will travel if hit properly ( found on the lower left side next to the iron selected)
Note: The true distance to the hole is affected by the elevation of the green. If a green is above the ball it will take more power to reach than if a green is below the hole. This is just simple physics.
ADJUTMENT for Elevation: for every 3 feet change you must add or subtract one yard
Example 1: You are 167 yards away from the flag the green is also 15 feet above the ball
15ft. div by 3 = + 5 extra yds. needed to reach the pin or a total of 167+ 5= 172 yds.
Example 2: You are 154 yds. from the pin and the green is 37 feet below the ball.
37 ft. div. by 3 = - 12.3 yds. Needed to reach the pin or a total of 154 yds. – 12.3 yds.= 141.7 yds.
Dist. To the pin +/- elevation div by max. distance club will hit
Example: 159 yds to the green with a rise in elevation of 8 feet. 8div by 3 = + 2.7 yds
159 yds + 2.7 yds = 161.7 yd shot div by 175 yds (5 iron that goes 175 yds) = 92.4% power
(must adjust distance if wind will affect distance of ball)
Other Examples: 127 yds with drop of 21 feet ..21div by 3 = - 7 yds
137 – 7 = 120 shot to pin
120 div by 130 (9 iron max. dist) = 92.30% power. Draw meter to 92.3% and hit the ding
Rough and sand affect distance:
To factor this into the distance use the following chart:
20-30% add 7% 15-20% add 5%
25-30% add 10% 30-40% add 20%
30-40% add 15% 50-60% add 25%
All else pitch to fairway and suck it up
EXAMPLE: 143 yds to pin in 20-30% rough. Green is above ball by 19 ft. (6.3 yds)
using a 7 iron (160yd)
143 + 6.3 div by 160 = 85.3% + 7% (ruff) = 92.3% power to reach the pin..hit the ding ..
PERCENT OF POWER FOR WGT PUTTING
The calculating of the % of power needed is based on the use of a handmade paper % gauge that is placed on your monitor directly above or below the WGT meter.
MAKING THE GUAGE:
While on a green place a full size sheet of white paper under the WGT meter.
Mark the exact start and finish of the WGT meter, with hash marks, onto the edge of this paper.
Remove the paper and cut a long strip at least 3/8’ wide and ¼” longer than the two marks. Fold this paper in half lining up both hash marks exactly and repeat by folding again into fourths.
Unfold this strip of paper and place has marks on the creases made.
This is the start of your hand made meter.
You now need to mark the hashes as follows: 0% 25% 50% 75% 100%
Now carefully determine the exact placement between 0% and 25% of 4 more hash marks (these must be exactly equal in spacing.
Now you will mark these new hash marks with 5% 10% 15% 20%.
Copy these hash marks onto a separate small piece of paper and fill in all open spaces between the other marks made from the creases.
Your meter will look like this:
I I I I I I I I I I >>>>>>>>>> I
0% 10% 15% 20% 25% 30% 35% 40% 45% 50%>>>>>>>>100%
Tape this onto your monitor lining up the 0% & 100% marks exactly with the start and max on you WGT meter
How to calculate % of power need to reach the hole
5 pieces of information are needed:
3 are found in the box located over the pin
The distance to the hole from your ball (usually in feet or yards)
The elevation of the ball in regards to the hole (usually in inches, but could be feet also)
The drop or rise indicated by which way the small green arrow head is pointing.
(up means the ball will go up hill – down means the ball will drop.)
The fourth variable number is found on your WGT putting gauge. It is the number located in the box to the far right on the meter. It is usually listed in feet or yards. This number will vary depending on the quality of the putter you are using.
Note: there is a constant that must be inputted on each calculation. That is the green speed assigned for the game and it will not change for the entire game.
Write these down:
Tournement Greens: factor 0.75%
Very Fast Greens: factor 0.9%
Fast Greens: 1.0%
Standard Greens: factor 1.1%
Slow Greens: factor 1.2%
EXAMPLE: (for every one inch of elevation change the distance to the hole will be affected by one foot)
If the ball drops 4 inches you must subtract 4 feet from the putt distance – if it rises you must add 4 feet in distance)
ON THE GREEN:
27 feet to the pin on very fast greens and the ball drops 4 inches to the hole
27ft – 4inches = 23ft. Since the ball will roll freely downhill this will adjust for that.
23ft X 0.9(grn spd factor) = 20.7 ft to cup.
WGT meter shows maximum putt distance of 40 ft.
20.7ft Div 40ft = 51.57%
To hit the ball to the cup will require bringing you wgt meter to as close to 51.75% on your paper gauge. Adjust for the curve (sideways roll) and hit the ding.
This putt should stop within 2 feet of the hole or in the cup. I always add like 2-3% to be sure I reach the hole.
PRACTICE - PRACTICE – N- PRACTICE
If you also wish to use the meter to make iron shots I can give you the calculations needed for those also. The results are accurate but the clubs you use will affect the results along with adjusting for wind speed and hitting the ding of course.
These are not cheat sheets as you still must use judgment and eye finger co-ordination
john - azdewars
- Posts : 17
Join date : 2016-09-04