🔧 本帖最後由 henrylin424 於 2011-6-30 13:54 編輯
網球拍線張力測試器ERT 300(開箱)
ERT 300 Manual
The right tension for every type of player
Dynamic Tension DT ( DT-value) / DT is the string bed stiffness
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
Not recommended to play tennis when DT below 28
Restring the racquet when the DT-value has decreased by 10% to 20%
Lo DT 28-34 Defensive play / Club
Mid 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
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.