ERT-300 / 張力計

henrylin424

5 d: K  C% E+ g" S% x+ r. s1 P5 [網球拍線張力測試器ERT 300(開箱)
9 Z$ T# r/ |6 N0 [' @+ H" F4 KERT 300 Manual
The right tension for every type of player
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5 m$ W4 `% M* S/ gDynamic Tension DT ( DT-value) / DT is the string bed stiffness
DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
DT determines the playing characteristics power and control.
6 Z; ^1 m0 \* D- i  Y5 E5 mHigher DT for more control / Lower DT for more power
9 n8 ?. \) w) Z! BNot recommended to play tennis when DT below 28
+ q* ]& {% M, e7 m1 ERestring the racquet when the DT-value has decreased by 10% to 20%
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Lo     DT 28-34      Defensive play / Club
. k5 y: p( t. r3 l5 D- X  n# d, gMid    DT 35-41      Dynamic,offensive play / Club,WTA
( @4 U' E6 P. ^* e% CHi      DT 42-46      Fast,aggressive play / Club , WTA , ATP
Hi+    DT 47-54     Very fast,extremely aggressive play / ATP

Within the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.
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7 V7 X0 g* h& ?( {" n: L在stringforum左方DT database 選擇你的球拍,即可查到相關線種掉磅chart.
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Gamma ATS ERT 300 Tenniscomputer
6 n% E3 t, g( O5 }! M- r" Q' |TW上售價169美金,海外運費36美金