ERT-300 / 張力計

henrylin424

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ERT 300 Manual
The right tension for every type of player
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6 t) s. m7 F) X: ?, O: @Dynamic 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)
1 V5 U) B( k3 i: XDT determines the playing characteristics power and control.
Higher DT for more control / Lower DT for more power
Not recommended to play tennis when DT below 28
Restring the racquet when the DT-value has decreased by 10% to 20%

" d8 Y/ v# }. u, FLo     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

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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Gamma ATS ERT 300 Tenniscomputer
TW上售價169美金,海外運費36美金
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