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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯
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, t- Y' M# H2 Z$ D' ]6 E. u# r4 c. h網球拍線張力測試器ERT 300(開箱)
# x7 k( E3 ~$ _: i2 u4 k( i. JERT 300 Manual
|; f+ C# |5 c5 X1 PThe right tension for every type of player: ~* p+ p K/ m i9 `! Q
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Dynamic Tension DT ( DT-value) / DT is the string bed stiffness( T7 f/ W" f3 B- N+ i
DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)5 x4 F W' K. t' [. r- P) W* f
DT determines the playing characteristics power and control.
3 T5 R6 g# T/ q6 m( t ?, JHigher DT for more control / Lower DT for more power9 D$ i0 t/ Y6 O9 A, }: ^
Not recommended to play tennis when DT below 28" M0 H/ _4 O+ c X8 c: ~8 k3 f
Restring the racquet when the DT-value has decreased by 10% to 20%
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* o* X$ B5 w! `: w# YLo DT 28-34 Defensive play / Club2 Y& l3 a5 ?- p% J4 g
Mid DT 35-41 Dynamic,offensive play / Club,WTA3 X6 q2 N, u. V" _: b' P; a/ C
Hi DT 42-46 Fast,aggressive play / Club , WTA , ATP
5 |; y9 K# {. V. D$ j2 r( AHi+ DT 47-54 Very fast,extremely aggressive play / ATP0 y1 K: ~5 }% V1 I5 S: V
8 q% a+ p+ ~( o6 tWithin 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.2 d6 t2 H" c, c! E
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發表於 2011-6-30 11:21:01
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