ERT-300 / 張力計

henrylin424

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8 a/ t+ h2 N3 i9 W" ~網球拍線張力測試器ERT 300(開箱)
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The right tension for every type of player

8 I6 [( W2 i9 I8 U0 z( qDynamic Tension DT ( DT-value) / DT is the string bed stiffness
& v' M* }$ n  P) ]0 |4 u, k4 RDT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
" z' F0 y% H2 `8 bDT determines the playing characteristics power and control.
Higher DT for more control / Lower DT for more power
4 [7 v* h" e5 x- N1 }( vNot recommended to play tennis when DT below 28
1 A5 q- |$ k8 Z+ [  K4 zRestring the racquet when the DT-value has decreased by 10% to 20%

8 C! s( R' E# F$ g) lLo     DT 28-34      Defensive play / Club
6 @% X( x. h8 e3 g# N# X9 ~; IMid    DT 35-41      Dynamic,offensive play / Club,WTA
3 _7 S2 ^* @* E" ]Hi      DT 42-46      Fast,aggressive play / Club , WTA , ATP
Hi+    DT 47-54     Very fast,extremely aggressive play / ATP

% [* k  \3 m, k) T, rWithin 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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Gamma ATS ERT 300 Tenniscomputer
TW上售價169美金,海外運費36美金
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