ERT-300 / 張力計

henrylin424

網球拍線張力測試器ERT 300(開箱)
ERT 300 Manual
6 r/ g* G# u7 m& f+ pThe right tension for every type of player

/ ?5 G" x+ m. c( ~6 UDynamic Tension DT ( DT-value) / DT is the string bed stiffness
% i$ Q  O7 J2 U* Z) ADT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
1 y& U5 o* ~/ b: E: w5 \DT determines the playing characteristics power and control.
Higher DT for more control / Lower DT for more power
+ Z7 r9 B# I4 @. o% W8 ?# }Not recommended to play tennis when DT below 28
! p  G7 m( {; v) U9 \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
1 {- q# F7 j9 b; GHi      DT 42-46      Fast,aggressive play / Club , WTA , ATP
" _" |5 f9 m9 @+ F# _Hi+    DT 47-54     Very fast,extremely aggressive play / ATP
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& S  l% V* K3 i- M+ JWithin 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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+ h# |$ L) m& ?# f1 eGamma ATS ERT 300 Tenniscomputer
TW上售價169美金,海外運費36美金
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