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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯
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網球拍線張力測試器ERT 300(開箱)
, j, x+ g i$ j7 o# UERT 300 Manual
. b. V4 l+ E5 Q. B W L1 k. yThe right tension for every type of player6 W" q$ o# V4 p2 c
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Dynamic Tension DT ( DT-value) / DT is the string bed stiffness
) b4 }% |" t B: H' ZDT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
8 d" P7 t# K6 O$ t9 y/ mDT determines the playing characteristics power and control.$ |6 N7 {' k! @4 L
Higher DT for more control / Lower DT for more power
+ S9 e* ]6 ~/ E3 `4 o+ g) i; t5 [: q SNot recommended to play tennis when DT below 284 e! J4 u1 S1 m7 N' y
Restring the racquet when the DT-value has decreased by 10% to 20%
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Lo DT 28-34 Defensive play / Club0 U9 ~' B5 S: {/ d4 L
Mid DT 35-41 Dynamic,offensive play / Club,WTA* L$ ?, w# L; W
Hi DT 42-46 Fast,aggressive play / Club , WTA , ATP# \) w" {3 m+ `. p8 \& K
Hi+ DT 47-54 Very fast,extremely aggressive play / ATP6 u) ~. B1 v4 [7 G* d4 V2 b4 `
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Within the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.
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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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發表於 2011-6-30 11:21:01
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