ERT-300 / 張力計

henrylin424

; f% P. t% z5 G; w) e  w. `
  ~0 v5 R9 @6 ]) e% m網球拍線張力測試器ERT 300(開箱)
ERT 300 Manual
The right tension for every type of player
9 {. v( }7 i) L4 {% t
& K8 `0 ]  `# UDynamic 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)
DT determines the playing characteristics power and control.
Higher DT for more control / Lower DT for more power
6 c2 m$ d8 R! k/ |- o& JNot recommended to play tennis when DT below 28
9 \/ A' W  `" ]; v3 x2 kRestring the racquet when the DT-value has decreased by 10% to 20%
: v7 j3 ]9 S7 j! Q* p% I# n9 i
4 i) W4 y4 Y* O/ _* y: ULo     DT 28-34      Defensive play / Club
4 W, q. W. O. {$ GMid    DT 35-41      Dynamic,offensive play / Club,WTA
; |4 D* d5 Z$ S) k4 W" ZHi      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.
8 k4 E% M8 j/ G' E1 K0 ~* v+ E
在stringforum左方DT database 選擇你的球拍,即可查到相關線種掉磅chart.
4 N2 p3 z* |% E. t. \3 |

henrylin424

回復 henrylin424 的帖子

1 b: [) {" s# ~6 G& aGamma ATS ERT 300 Tenniscomputer
TW上售價169美金,海外運費36美金