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Old 04-09-2013, 04:20 PM   #122
Tamiya
Semi-Pro
 
Join Date: Jan 2013
Location: AU, SG, MY
Posts: 796
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Quote:
Originally Posted by tennisplayer_85 View Post
As explained in the previous comment, moving the spot where the ball hits (lands on) the court horizontally almost doesn't have any effect on the speed.
Moving the ball 1 foot in the vertical direction does by 1.6 miles of error (see previous comment). So the 10 miles you talk about would mean moving the ball more than 6 feet from it's real landing location. In normal circumstances you should be able to guess the balls location within a foot of its real location (especially if its close to the lines).

I have tested it with real videos from the australian open where the professional radar gun shows the speed so i was able to compare. All the calculations i did where within 2,5 miles of the radar gun's speed except for 1 out of 10, I suggest you try it your self at a pro tournament.
R u in melbourne? If so we might be able to tie up some real world testing.
I have a Bushnell Speedster k-band & know a friend who's bought
the 2-digit huge LED radar thingy that you'd hang on the back fence.

Just need to find a court & someone with a strong reliable repeatable serve...
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