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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): \" C3 U0 y/ P! A& V" P: y
ERT 300 Manual 9 E# K1 I' f8 k: Q6 `- K9 ?2 Y
The right tension for every type of player
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# ^3 x- b$ D0 QDynamic Tension DT ( DT-value) / DT is the string bed stiffness
3 L# v; k. z2 H: J$ I6 g5 fDT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
9 V' t' [7 o. L* V3 F$ c. \DT determines the playing characteristics power and control.
, O7 P! y9 |# ?/ B& `: QHigher DT for more control / Lower DT for more power F' d& g2 ^$ p9 ]
Not recommended to play tennis when DT below 28
$ P9 R+ v3 _; m/ d I/ [Restring the racquet when the DT-value has decreased by 10% to 20%
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Lo DT 28-34 Defensive play / Club/ I, r$ d) w& U1 J. H
Mid DT 35-41 Dynamic,offensive play / Club,WTA: ~; d1 r: E1 w3 `- @- D3 y0 R. f% y" Y" Q
Hi DT 42-46 Fast,aggressive play / Club , WTA , ATP* p! G% F5 x. r7 S, I A
Hi+ DT 47-54 Very fast,extremely aggressive play / ATP4 P$ W; g' \% T; B6 R
# h8 {$ n8 K uWithin the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.2 j- b4 _! a) D
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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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