ERT-300 / 張力計

henrylin424

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網球拍線張力測試器ERT 300(開箱)
ERT 300 Manual
4 Z8 x( f4 h/ p) DThe right tension for every type of player

" U$ W5 T) p2 t# cDynamic Tension DT ( DT-value) / DT is the string bed stiffness
6 B6 T( T4 k* M" }7 t% _" \4 I" ]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
7 l5 L1 l# r+ k# g- {$ X; TNot recommended to play tennis when DT below 28
+ p0 j; R, h2 uRestring the racquet when the DT-value has decreased by 10% to 20%

: o& |) B. J) d$ o, RLo     DT 28-34      Defensive play / Club
7 J$ M% `8 @# P4 W5 W. I) ?, wMid    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
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8 O/ W+ r  x4 p$ h. ?3 R- H+ ]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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henrylin424

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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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