ERT-300 / 張力計

henrylin424

' _, d: R. E$ m' R) {
" A$ J& ~8 s! S* j2 }網球拍線張力測試器ERT 300(開箱)
ERT 300 Manual
The right tension for every type of player

3 \3 [0 z6 n$ F; LDynamic Tension DT ( DT-value) / DT is the string bed stiffness
5 ^6 X1 x$ ~1 B# [9 uDT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
& J7 S- h  i! N4 qDT 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
" q' @! u, b2 ]( [& Q$ FRestring the racquet when the DT-value has decreased by 10% to 20%
" n7 [4 @' x7 D  H8 B! }
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
, p# e+ N% a5 C! b
Within the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.
! R' \( k7 o4 ]& I. v* w
在stringforum左方DT database 選擇你的球拍,即可查到相關線種掉磅chart.

1 U# t* o6 Y% I9 F$ `

henrylin424

回復 henrylin424 的帖子

Gamma ATS ERT 300 Tenniscomputer
' T! E9 g) l) A/ ?4 J: MTW上售價169美金,海外運費36美金