ERT-300 / 張力計

henrylin424

網球拍線張力測試器ERT 300(開箱)
ERT 300 Manual
The right tension for every type of player
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Dynamic Tension DT ( DT-value) / DT is the string bed stiffness
% H6 a8 U# c$ |; m9 |" z+ zDT 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.
% {/ F3 K7 D2 F" vHigher DT for more control / Lower DT for more power
Not recommended to play tennis when DT below 28
, P& J+ q% R. w2 X* D7 e1 W0 SRestring the racquet when the DT-value has decreased by 10% to 20%

Lo     DT 28-34      Defensive play / Club
Mid    DT 35-41      Dynamic,offensive play / Club,WTA
Hi      DT 42-46      Fast,aggressive play / Club , WTA , ATP
Hi+    DT 47-54     Very fast,extremely aggressive play / ATP
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Within the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.

+ p: \' u) g# {# V* ^; h8 Y9 d1 G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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. d6 s7 i/ J" X1 y6 N3 J0 DGamma ATS ERT 300 Tenniscomputer
TW上售價169美金,海外運費36美金
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