羽毛球球速选择器Shuttlecock Speed Picker
选城市、填馆内温度，就知道该开几速的球。Pick your city and the hall’s temperature to see which speed to open.
该开几速Your speed
选好城市（或填上海拔）和馆内温度，这里就会给出推荐。Choose a city (or type the altitude) and the hall temperature, and your speed shows up here.
胜利 VictorVictor74 速、75 速：用于海拔 1,000–2,000 米的地区（云贵川、陕甘宁）已核实，更高的地方没写。Speed 74 or 75: for regions 1,000–2,000 m (3,300–6,600 ft) high, such as Yunnan and Gansu verified. It says nothing for higher up.
79 速 · 10 ℃ 以下Speed 79 · 10 °C and below (50 °F)78 速 · 10–18 ℃Speed 78 · 10–18 °C (50–64 °F)18–21.5 ℃：表里没有写 已核实，取更近的一档 估算。18–21.5 °C (64–71 °F): the chart says nothing here verified, so the nearer speed it is estimate.77 速 · 21.5–28.5 ℃Speed 77 · 21.5–28.5 °C (71–83 °F)76 速 · 28.5 ℃ 以上Speed 76 · 28.5 °C and above (83 °F)
尤尼克斯 YonexYonex
7 号 · 7 ℃ 以下No. 7 · 7 °C and below (45 °F)6 号 · 7–13 ℃No. 6 · 7–13 °C (45–55 °F)5 号 · 12–18 ℃No. 5 · 12–18 °C (54–64 °F)4 号 · 17–23 ℃No. 4 · 17–23 °C (63–73 °F)3 号 · 22–28 ℃No. 3 · 22–28 °C (72–82 °F)2 号 · 27–33 ℃No. 2 · 27–33 °C (81–91 °F)1 号 · 33 ℃ 以上No. 1 · 33 °C and above (91 °F)
等效温度Sea-level equivalent横轴是「等效温度」：海平面上多少度的空气，和你这里一样稀。越往右空气越稀，球飞得越远，就该用越慢的球。Along the bottom is the sea-level equivalent: how warm a sea-level hall would be with air as thin as yours. The further right, the thinner the air, the further a shuttle flies, and the slower the speed it calls for.品牌的表都是官方的 已核实；把海拔折算成温度，是按空气密度算的 估算。以到场试球为准。The charts are the brands’ own verified; turning altitude into temperature is our arithmetic from air density estimate. The test on court has the last word.
其他牌子：亚狮龙官网标的是 73–81 速和「高原球」，但没写温度 已核实；李宁、翎美、超牌没找到官方的温度表 未知。速度号不是统一标准，同一个号在不同牌子之间不一定一样快 转述，可以先按胜利那一栏的号选，到场再试。Other brands: RSL lists speeds 73–81 and “High Altitude” but gives no temperatures verified; for Li-Ning, Lingmei and Chaopai we found no official chart unknown. Speed numbers aren’t a shared standard, so one brand’s 77 needn’t fly like another’s reported: start from the Victor column and test on court.到场怎么试球Test it on court
3.1 试球时，球员应以下手全力击球，击球点在端线上方；球应向上击出，方向与边线平行。3.2 速度合格的球，应落在对方端线前不少于 530 毫米、不多于 990 毫米处。3.1 To test a shuttle, a player shall use a full underhand stroke which makes contact with the shuttle over the back boundary line. The shuttle shall be hit at an upward angle and in a direction parallel to the side lines. 3.2 A shuttle of correct speed will land not less than 530 mm and not more than 990 mm short of the other back boundary line.BWF《羽毛球竞赛规则》第 3 条 已核实，Tipo Lab 据英文原文翻译。BWF Laws of Badminton, Law 3 verified.合格：端线前 530–990 毫米Right speed: 530–990 mm short of the back line
双打后发球线Doubles long service line
- 站到一边的端线外，让球在端线正上方被击中。Stand behind one back boundary line, so you hit the shuttle right above it.
- 下手全力把球往前上方打出去，方向和边线平行。Hit a full underhand stroke, upwards and parallel to the side lines.
- 看落点：落在对面端线前 53–99 厘米之间，速度就合适。这一段大约就是双打后发球线（离端线 76 厘米 转述）前后各 23 厘米。Watch where it lands. Between 530 and 990 mm (21–39 in) short of the far back line, the speed is right: roughly the doubles long service line, 760 mm (2 ft 6 in) from the back line reported, give or take 230 mm (9 in).
- 打短了（落在这一段之前）就换快一档；打长了（落在这一段之后，或者出界）就换慢一档。Falls short of that strip? Open one speed faster. Flies long, past it or out? One speed slower.
- 多打几个再下结论，最好让平时一起打的人来试：力气不同的人，打出来会差一些 估算。Hit a few before you decide, and let someone you play with do it: a stronger arm sends it further estimate.
别的因素算不算What else counts, and what doesn’t
- 湿度：算，但只动备选。 胜利官方说潮湿时要用慢一点的球、干冷时用快一点的 已核实；物理实验也测到，羽毛吸水能让球最多重 10%、射程最多远 5% 已核实。没有可靠的换算，所以这里只把备选换到慢（或快）的那一边 估算。Humidity counts, but only for the backup. Victor advises a slower shuttle in humid weather and a faster one when it’s cold and dry verified, and lab measurements found damp feathers add up to 10% to a shuttle’s weight and 5% to its range verified. With no reliable conversion, it only moves the backup one step slower (or faster) estimate.
- 场馆：只通过温度起作用。 恒温空调馆、冬天有没有暖气，差别都在温度上，所以做成了温度快选 估算。空调和通风的风会让球飘，但不改变该用几速；正式比赛的场馆要把风速压得很低，常见的说法是每秒 0.2 米以内 转述。The hall counts only through its temperature. Air-conditioned or not, heated or not, the difference is the temperature, which is why the kinds of hall are temperature presets estimate. Draughts from vents make a shuttle drift but don’t change the speed to use; tournament halls keep air movement very low, commonly cited as under 0.2 m/s reported.
- 户外：风比球速重要。 BWF 专门为户外做了 AirShuttle，设计目标是能在每小时 12 公里以内的风里打 已核实。Outdoors, wind matters more than speed. The BWF made the AirShuttle for outdoor play, designed for winds up to 12 km/h (7 mph) verified.
- 水平：不算。 BWF 的试球方法只说「一名球员」 已核实，品牌的表也只看温度、海拔和湿度 已核实；按水平选速的说法没找到可靠来源 未知，所以这里不问你的水平。Your level doesn’t count. The BWF test asks only for “a player” verified, and the brands’ charts go by temperature, altitude and humidity alone verified. We found no reliable source for picking speed by skill unknown, so the picker doesn’t ask.
- 天气：影响很小。 天气让气压上下变一两个百分点，相当于馆里差 3–6 ℃，最多差一档 估算，到场一试就知道。The weather barely counts. Weather moves the air pressure a percent or two either way, like 3–6 °C in the hall: a step at most estimate, which the test on court will show.
- 规则怎么管高原： 规则 2.4 允许各国羽协在海拔或气候特殊的地方批准修改规格的球 已核实；折羽毛则是球友的土办法，规则里没有 已核实。What the Laws say about altitude: Law 2.4 lets a national association approve modified shuttles where altitude or climate makes the standard one unsuitable verified. Bending feathers is players’ own fix, and appears nowhere in the Laws verified.