ERT-300 / 張力計

henrylin424

) P  V  \& k$ T  p. O
, r8 g, g8 y4 x& X網球拍線張力測試器ERT 300(開箱)
ERT 300 Manual
The right tension for every type of player
: D% R) g. t; U. x8 D5 u
# K# q, X1 l* {7 Y# lDynamic 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)
7 K" a. E" m! l9 U! eDT determines the playing characteristics power and control.
5 `/ x( V& @7 s/ J0 m7 \Higher DT for more control / Lower DT for more power
2 j; L' {: h, B- H/ Z5 zNot recommended to play tennis when DT below 28
3 w, g* V8 X. l8 h. t/ G+ V6 n& \Restring the racquet when the DT-value has decreased by 10% to 20%
+ {7 B1 A  @9 B# z6 }  i# G
Lo     DT 28-34      Defensive play / Club
) _8 p% T+ F5 ~/ QMid    DT 35-41      Dynamic,offensive play / Club,WTA
  L! H; I  y. ]8 YHi      DT 42-46      Fast,aggressive play / Club , WTA , ATP
6 l5 m# V% e: |1 KHi+    DT 47-54     Very fast,extremely aggressive play / ATP

% s" k- s2 Y( D3 B% W; F3 FWithin the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.
+ f+ z5 _; J9 F- X, M7 j4 ?0 k
在stringforum左方DT database 選擇你的球拍,即可查到相關線種掉磅chart.
1 M: Q* T& V& D6 f+ B  O

henrylin424

回復 henrylin424 的帖子

# s6 o' }7 [" a7 p* C0 X+ D9 |2 n8 GGamma ATS ERT 300 Tenniscomputer
TW上售價169美金,海外運費36美金
6 I7 c5 ?: {0 O) W5 A$ T/ z