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Re: Impossible wind calcualtion

Mon, Mar 9 2020 2:03 AM (13 replies)
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  • hpurey
    11,505 Posts
    Thu, Mar 5 2020 10:38 AM

    JLetson1:
    Hit 8 iron, 145yds

    Is that based off of the clubs rated distance, or by your mapped distance.  To add to that, was is based off of mapped distance from the fw or tee?   

    For instance, let's say your 8 iron is rated at 150 yds.  Your distance played "145" calculated for percentage of power (145/150= 96.6%)  but that percentage of power from the fw will be different that if hit from a tee.  

     

    Just wondering if you've mapped you clubs/ball combo for tee shots and fw shots, or even mapped at all.

  • borntobesting
    9,706 Posts
    Thu, Mar 5 2020 10:48 AM

    JLetson1:

    Playing Best of Bandon, hole #2, 136yds from tee, elev drop 21ft, net yardage around 128yds. Dead 6 0'clock headwind at 23mph, calculate needed distance around 144yds. Hit 8 iron, 145yds, no spin, ball carries 144 yards and lands 42 feet (14 yards) past the pin. WTF. How can you possibly account for that? Any tips, ideas, etc.  

    # 1 A ball with no spin is always going farther

    # 2 The dreaded 8 iron has always been prone to deviations that other clubs don't have.

  • fobby1980
    310 Posts
    Thu, Mar 5 2020 3:00 PM

    JLetson1:

    Playing Best of Bandon, hole #2, 136yds from tee, elev drop 21ft, net yardage around 128yds. Dead 6 0'clock headwind at 23mph, calculate needed distance around 144yds. Hit 8 iron, 145yds, no spin, ball carries 144 yards and lands 42 feet (14 yards) past the pin. WTF. How can you possibly account for that? Any tips, ideas, etc.  

    My 2 cents:

    heavy wind calculation is an entirely different beast than moderate/low. I started using this formula recently, and it has held true mostly. Try it OP and see if it can helps you:

    Wind strength = avg wind X (distance/225) X angle factor. 

    If you don’t know what angle factors are, go to MistressCossette’s page. The chart is somewhere within her immensely long post.

    Furthermore, ball spin ratings affect calculations. The higher the spin, the more distance is needed in your calculations. Also, dead-on or near dead-on headwinds affect distance more, so your calculations will have to consider that as well.

    Example: #8 STA, 207 yds, 5ft drop, and 26-28 mph headwind at 7 o’clock. AF for 7 o’clock is 0.866. Wind strength is 27 x (207/225) x 0.866 = 21.51 so roughly 22. 207+22=229. With the TM TPX5 lv48, my 3I FS is 227 from the tees. But because it’s heavy wind and near dead-on, I would need to reduce the spin to around 50%.

     

  • Babzilla33
    910 Posts
    Mon, Mar 9 2020 2:03 AM

    1irony:

    Based off my calculations, I would have only expected that shot to have traveled 10 yards long. Therefore, because it went 14 yards long, I think we should file a class-action lawsuit against WGT because the wind took a little coffee break and affected the ball 4 yards less than it should have. 

    :) :) :) :) :) :) :)

    This is why Darren is awesome!

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