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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯 $ K( Q6 E/ Q$ F& y
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網球拍線張力測試器ERT 300(開箱); C' ?8 G. D, n6 ~
ERT 300 Manual ) @7 z2 X7 s! h5 u! C
The right tension for every type of player1 o; v1 e: R& w K
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Dynamic Tension DT ( DT-value) / DT is the string bed stiffness4 E f9 V, M* A2 u/ ^- \
DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
# N0 |1 R3 n2 q6 B- k8 hDT determines the playing characteristics power and control.! o2 h- K* X; ?9 q( F
Higher DT for more control / Lower DT for more power
2 L7 E- K4 C$ H, A2 y/ }( mNot recommended to play tennis when DT below 28
1 O. P) S0 X) R+ K, [( wRestring the racquet when the DT-value has decreased by 10% to 20%2 L- Y* }8 E! a1 v
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Lo DT 28-34 Defensive play / Club; @1 p8 E. F/ c. |& r, O- S1 k
Mid DT 35-41 Dynamic,offensive play / Club,WTA
) h7 v3 L/ n6 |4 d1 EHi DT 42-46 Fast,aggressive play / Club , WTA , ATP
( V: [9 h# \' V4 v. y. P2 \Hi+ DT 47-54 Very fast,extremely aggressive play / ATP
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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.( m- w% W6 Z0 k( F# V$ @8 O G
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發表於 2011-6-30 11:21:01
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