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 03-29-2013, 06:16 AM #3 String New User   Join Date: Mar 2013 Posts: 2 F(length) = 14 x L / #length-strings F(width) = 21 x B / #width-strings Eplanation: F(length) (kg) = tension strength in length F(width) (kg) = tension strength in width L = length of inner blade (cm) B = width of inner blade (cm) #length-strings = number of strings in length of blade #width-strings = number of strings in width of blade These results do calculate the maximum tension (100%). To calculate a softer tension, decrease the result with respectively 5, 10, 15 or 20% to: 95% hardhitter and/or spinplayer 90% mediumhitter 85% comfortable of light arm injury 80% short swing with less control of arm injury example A Racket with 18 length- and 18 width-strings, length inner blade 33cm, width inner blade 24cm for a hardhitter: F(length) = 14 x 33 / 18 = 25,6kg F(width) = 21 x 24 / 18 = 28kg Note: The harder the tension of a string is applied, the more control the hitting of the bal but the less power the ball gets. The softer the tension of a string is applied, the less control the ball gets but the more power the ball gets.