ERT-300 / 張力計

henrylin424

網球拍線張力測試器ERT 300(開箱)
2 ^1 m0 e$ q8 A3 j! f3 DERT 300 Manual
5 L: m- M8 [" x5 a2 K* V2 a" IThe right tension for every type of player
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3 n2 _; _; O6 J# j  `* [Dynamic Tension DT ( DT-value) / DT is the string bed stiffness
1 ^: F# O7 |' c7 x5 s* i$ W' oDT 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.
' R% C: i/ t" r+ lHigher DT for more control / Lower DT for more power
* V& y- U( j- e! d5 g8 F- JNot recommended to play tennis when DT below 28
Restring the racquet when the DT-value has decreased by 10% to 20%

Lo     DT 28-34      Defensive play / Club
* R! Y/ v* l. q* [7 t6 qMid    DT 35-41      Dynamic,offensive play / Club,WTA
Hi      DT 42-46      Fast,aggressive play / Club , WTA , ATP
2 A2 x. |" z' hHi+    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.

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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5 x& @, \! {# FGamma ATS ERT 300 Tenniscomputer
) n4 z8 l( \8 ]; mTW上售價169美金,海外運費36美金
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