ERT-300 / 張力計

henrylin424

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網球拍線張力測試器ERT 300(開箱)
! y' @$ ]8 D0 U: IERT 300 Manual
' V0 N( o0 {& |+ s' R9 Z% I! FThe right tension for every type of player
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/ K/ W+ X* }- g6 X! TDynamic Tension DT ( DT-value) / DT is the string bed stiffness
( E- ]7 R& Y* G* [( e: ^+ u# lDT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
/ M9 W% O" \+ U1 k& fDT determines the playing characteristics power and control.
! u) i  b1 K' c. N4 JHigher DT for more control / Lower DT for more power
% P3 W" C6 f7 v* h( ~Not recommended to play tennis when DT below 28
/ s* m: |: f" |) F4 e1 fRestring the racquet when the DT-value has decreased by 10% to 20%
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Lo     DT 28-34      Defensive play / Club
Mid    DT 35-41      Dynamic,offensive play / Club,WTA
) K! P8 K0 g3 \4 X: oHi      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.

7 b. C$ T, Z+ _2 l! F5 ^9 @* T- C/ X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
7 I6 C. i8 i( b, ]! n% \0 R* ZTW上售價169美金,海外運費36美金