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Downhill greens with backspin

• YankeeJim 25,827 Posts

  Mon, Dec 30 2013 8:02 AM

  alpenpirat:

  Zoom ???? What are you talking about ??? If i make the picture bigger i see only pixels, not a zoom.

  It's just for magnifying the ball to set the spin. You can use right-click zoom to center on where the cursor is. The Nikes don't have a convenient reference point like the Callaways do.

• alpenpirat 1,166 Posts

  Mon, Dec 30 2013 8:23 AM

  Hy Jim.. i know.. i know... but i like to see a better few, if im zooming the picture. But that the different balls have convenient points, i heard the first time. :))

  Regards from Alps 

• SplashLewis 363 Posts

  Mon, Dec 30 2013 9:00 AM

  JHarkness:

  I too like to use full backspin. Here is a rough formula that I like to use which works pretty well.

  add 5-7 automatically for full backspin.

  add or subtract 50% for headwind or tailwind (ex. 15mph headwind = additional 7 to distance)

  add or subtract 1/3 for elevation. (ex. 20ft downhill = 5 subtracted from distance.)

  183 + 5(full backspin) - 1(half of 3 for tailwind) - (1/3 of down elevation). For crosswinds, you need to atleast double whatever the wind speed is. (ex. 15mph crosswind = atleast 30ft aim adjustment.)

  Tweek the numbers until you get the right combination.

  are you talking about percentage or yards?