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| Need clarification of DHS blade specification https://ooakforum.com/viewtopic.php?f=43&t=37675 |
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| Author: | Vladojica [ 18 Feb 2021, 20:14 ] | ||
| Post subject: | Need clarification of DHS blade specification | ||
Hi, can someone explain the meaning of numbers on the box of DHS Ma Long Blades? I am sure that the first two numbers are weight and thickness of the blade, but what are the other numbers especially these percentages at the bottom?
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| Author: | haggisv [ 18 Feb 2021, 20:45 ] |
| Post subject: | Re: Need clarification of DHS blade specification |
Interesting! They are, roughly translated: Balance position Rebound height Rebound height decrease I'm not sure how these are measured though, and how they're meaningful. |
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| Author: | Alas [ 21 Feb 2021, 02:54 ] |
| Post subject: | Need clarification of DHS blade specification |
Very interesting. I always assumed those lengths were like width and total blade length. I have similar cards for my HH2. Sent from my iPhone using Tapatalk |
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| Author: | iskandar taib [ 04 May 2021, 01:45 ] |
| Post subject: | Re: Need clarification of DHS blade specification |
Balance position would perhaps be where the blade balances, if you put it on a straightedge. Probably measured either from the tip or from the base of the blade. I suppose "rebound height" would be how high a ball bounces off the blade, not sure how high it's dropped from. The "rebound height decrease"? Perhaps how much rebounds decrease comparing the second bounce to the first one? Iskandar |
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| Author: | igorponger [ 04 May 2021, 03:21 ] |
| Post subject: | Re: Need clarification of DHS blade specification |
Product specifications wrote: HURRICANE LONG 序 列 号 : AHABBAF 217 HL3-FL 18 12 产 品 技 术 测 试 值 : 在 标 准 条 件 下 ( 标 准 温 度 、 湿 度 ) 经 实 验 室 测 试 所 得 数 据 (38.151.19 重 量 : 88.5 g 厚 度 : 6.38 mm 平 衡 点 123 mm 弹 跳 高 度 : 221 mm 反 弹 速 度 减 率 69% HURRICANE LONG Serial number : AHABBAF 217 HL3-FL 18 12 Product technology Test values : Under standard conditions ( standard temperature, humidity) Data obtained by laboratory testing (38.151.19 Weight : 88.5 g Thickness 6.38mm Balance it out 123mm Bounce height 221 mm Rebound speed reduction rate 69% Be happy ____________ SOME MORE NOTATION FOR YOUR BETTER UNDERSTANDING The given value of Reduction of Rebound Velocity 69% as seen on the blade's sertificate should be read as COR 69%. CoR (index of restitution for racket blade) = V rebound / V dropping The greater COR will indicate the greater ball rebounding speed for a given blade. |
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