ERT-300 / 張力計

henrylin424

: V: ~% _' ?0 c6 `; i, z) E網球拍線張力測試器ERT 300(開箱)
8 ^# b# j) m1 [ERT 300 Manual
  e+ v" R2 X6 O" W& nThe right tension for every type of player

% X) G9 {, e' XDynamic Tension DT ( DT-value) / DT is the string bed stiffness
DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
: B% E) C( D! w# k$ b8 h' TDT determines the playing characteristics power and control.
& E. B& l  |( n% w( ~% iHigher DT for more control / Lower DT for more power
& |' C# `8 C$ j: U0 |, 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
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

" \) ~1 t# q, `# S# p0 I; ]( bWithin the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.

/ I8 I8 S1 e& Q/ K& W( K' Z' I0 I在stringforum左方DT database 選擇你的球拍,即可查到相關線種掉磅chart.

henrylin424

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  g" c9 e0 g8 S5 M, VGamma ATS ERT 300 Tenniscomputer
TW上售價169美金,海外運費36美金
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