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

( K4 `9 w6 E- m$ ]Dynamic Tension DT ( DT-value) / DT is the string bed stiffness
2 m, A, I; k; m$ f% q; CDT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
: y: R3 u3 Y9 P+ `DT determines the playing characteristics power and control.
Higher DT for more control / Lower DT for more power
' P" S" G  Q' L$ c, UNot recommended to play tennis when DT below 28
3 F! Z$ B7 X- h+ A  T6 @- @Restring the racquet when the DT-value has decreased by 10% to 20%

, a4 {7 ^9 R$ C3 a4 C# g( a2 hLo     DT 28-34      Defensive play / Club
% _' a3 f: R' k4 C- m+ V0 WMid    DT 35-41      Dynamic,offensive play / Club,WTA
Hi      DT 42-46      Fast,aggressive play / Club , WTA , ATP
  W4 }8 E8 }2 l; L) fHi+    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.

6 V, m/ V6 |2 O' B4 ~* s. {在stringforum左方DT database 選擇你的球拍,即可查到相關線種掉磅chart.
: N) C' J8 M) X6 M. C

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Gamma ATS ERT 300 Tenniscomputer
/ K( d, ]. M# @' {7 C. c7 oTW上售價169美金,海外運費36美金