{"id":33672,"date":"2026-06-14T18:00:32","date_gmt":"2026-06-14T16:00:32","guid":{"rendered":"https:\/\/www.welovecycling.com\/cs\/?p=33672"},"modified":"2026-06-12T11:59:57","modified_gmt":"2026-06-12T09:59:57","slug":"konec-vrcharskych-kol-kdyz-aerodynamika-porazi-vahu","status":"publish","type":"post","link":"https:\/\/www.welovecycling.com\/cs\/2026\/06\/14\/konec-vrcharskych-kol-kdyz-aerodynamika-porazi-vahu\/","title":{"rendered":"Konec vrcha\u0159sk\u00fdch kol. Kdy\u017e aerodynamika por\u00e1\u017e\u00ed v\u00e1hu"},"content":{"rendered":"

Lehk\u00e9 kolo mus\u00ed b\u00fdt v hor\u00e1ch rychlej\u0161\u00ed. Nebo ne? Cyklistika mo\u017en\u00e1 definitivn\u011b zabila jeden z nejv\u011bt\u0161\u00edch cyklistick\u00fdch m\u00fdt\u016f. V\u00a0z\u00e1vodech, kter\u00e9 rozhoduj\u00ed dlouh\u00e1 alpsk\u00e1 a pyrenejsk\u00e1 stoup\u00e1n\u00ed, toti\u017e nejlep\u0161\u00ed jezdci sv\u011bta gar\u00e1\u017euj\u00ed u\u017e sv\u00e1 ryze vrcha\u0159sk\u00e1 kola v t\u00fdmov\u00fdch kamionech. A fyzika m\u00e1 pro to p\u0159ekvapiv\u011b jasn\u00e9 vysv\u011btlen\u00ed.<\/strong><\/p>\n

Tadej Poga\u010dar i Jonas Vingegaard, dva nejv\u011bt\u0161\u00ed mach\u0159i sou\u010dasnosti v\u00a0oboru etapov\u00fdch z\u00e1vod\u016f, maj\u00ed k dispozici dva typy r\u00e1m\u016f: aerodynamick\u00e9 speci\u00e1ly i ultralehk\u00e9 modely do kopc\u016f. Poga\u010dar m\u016f\u017ee libovoln\u011b s\u00e1hnout po aerodynamick\u00e9m Colnagu Y1RS nebo leh\u010d\u00edm, ale m\u00e9n\u011b aero modelu V5RS. Vingegaardovi jeho t\u00fdm Visma nab\u00edz\u00ed Cerv\u00e9lo S5 a lehk\u00fd stroj R5. P\u0159esto ani jeden z nich v\u011bt\u0161inou po tzv. vrcha\u0159sk\u00e9m kole nes\u00e1hne. Ani v etap\u00e1ch s v\u00edce ne\u017e \u010dty\u0159mi tis\u00edci v\u00fd\u0161kov\u00fdmi metry a horsk\u00fdmi dojezdy nejvy\u0161\u0161\u00ed kategorie.<\/span><\/p>\n

Aerodynamika je d\u016fle\u017eit\u011bj\u0161\u00ed, ne\u017e cyklist\u00e9 p\u0159ipou\u0161t\u00ed<\/strong><\/h2>\n

Pro v\u00fdrobce to mus\u00ed b\u00fdt bolestiv\u00e9 zji\u0161t\u011bn\u00ed. Colnago i Cerv\u00e9lo \u017eenou v\u00fdvoj d\u00e1l a pravideln\u011b p\u0159edstavuj\u00ed z\u00e1sadn\u011b p\u0159epracovan\u00e9 lehk\u00e9 r\u00e1my, objektivn\u011b lep\u0161\u00ed ne\u017e kdy d\u0159\u00edv. Loni nov\u00e9 R5 se ve v\u0161ech velikostech dostalo na hranici minim\u00e1ln\u00edho povolen\u00e9ho limitu 6,8 kg. Taky V5RS, novinka od Colnaga, je leh\u010d\u00ed a z\u00e1rove\u0148 aerodynami\u010dt\u011bj\u0161\u00ed ne\u017e p\u0159edch\u016fdce. Pap\u00edrov\u011b ide\u00e1ln\u00ed zbran\u011b do hor. Jen\u017ee realita ukazuje n\u011bco jin\u00e9ho.<\/span><\/p>\n

Pro\u010d ale jen v\u00e1ha nesta\u010d\u00ed jako argument pro\u00a0to, aby Tadej a Jonas sedli na lehk\u00e9 kolo? Z\u00e1kladn\u00ed rovnice stoup\u00e1n\u00ed je jednoduch\u00e1: v\u00fdkon pot\u0159ebn\u00fd k j\u00edzd\u011b do kopce z\u00e1vis\u00ed na hmotnosti, sklonu a rychlosti. \u010c\u00edm leh\u010d\u00ed jezdec a kolo, t\u00edm m\u00e9n\u011b energie je t\u0159eba k udr\u017een\u00ed tempa. Jen\u017ee to je pouze \u010d\u00e1st p\u0159\u00edb\u011bhu.<\/span><\/p>\n

Do hry vstupuje aerodynamika, a ta je mnohem d\u016fle\u017eit\u011bj\u0161\u00ed, ne\u017e si v\u011bt\u0161ina cyklist\u016f p\u0159ipou\u0161t\u00ed. I p\u0159i rychlosti 25 km\/h, na sedmiprocentn\u00edm stoup\u00e1n\u00ed, jde zhruba 15 procent ve\u0161ker\u00e9ho \u00fasil\u00ed jen do p\u0159ekon\u00e1v\u00e1n\u00ed odporu vzduchu. P\u0159i 30 km\/h, co\u017e je tempo, jak\u00fdm prof\u00edci b\u011b\u017en\u011b stoupaj\u00ed v Grand Tour, u\u017e je to zhruba p\u011btina v\u00fdkonu.<\/span><\/p>\n

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Aerodynamika je kl\u00ed\u010d k v\u00edt\u011bzstv\u00ed. Uv\u011bdomuje si to i Jonas Vingegaard z Visma Lease a Bike, kter\u00fd u\u017e jin\u00e9 kolo ne\u017e aero prakticky nepou\u017e\u00edv\u00e1.<\/em><\/figcaption><\/figure>\n

A te\u010f to podstatn\u00e9: ka\u017ed\u00fd kopec m\u00e1 i sjezd. A \u010dasto dlouh\u00e9 roviny p\u0159ed n\u00edm a za n\u00edm. V etap\u011b s Mont Ventoux na lo\u0148sk\u00e9 Tour de France tvo\u0159il odpor vzduchu p\u0159i pr\u016fm\u011brn\u00e9 rychlosti 42,8 km\/h v\u00edce ne\u017e 90 procent v\u0161ech sil, kter\u00e9 musel jezdec p\u0159ekonat. P\u0159i sjezdech kolem 70 km\/h dokonce p\u0159es 96 procent. \u010c\u00edm vy\u0161\u0161\u00ed rychlost, t\u00edm brut\u00e1ln\u011bji aerodynamika dominuje. Odpor vzduchu roste kvadraticky s rychlost\u00ed, pot\u0159ebn\u00fd v\u00fdkon dokonce t\u0159et\u00ed mocninou. Z toho plyne jednoduch\u00fd z\u00e1v\u011br: i na hodn\u011b kopcovit\u00e9 trati je v sou\u010dtu rychlej\u0161\u00ed aerodynamick\u00e9 kolo ne\u017e extr\u00e9mn\u011b lehk\u00fd r\u00e1m.<\/span><\/p>\n

Ve World Tour hraje kl\u00ed\u010dovou roli v\u00e1hov\u00fd limit, jak ho stanovuje cyklistick\u00e1 unie UCI. Aero kola se dnes dok\u00e1\u017eou dostat velmi bl\u00edzko t\u00e9to hranice, zat\u00edmco ultralehk\u00fd r\u00e1m mus\u00ed b\u00fdt um\u011ble dov\u00e1\u017een, aby pravidlo splnil. Rozd\u00edl, kter\u00fd d\u0159\u00edve hr\u00e1l ve prosp\u011bch vrcha\u0159sk\u00fdch kol, se prakticky vymazal.<\/span><\/p>\n

\n
\"jonas-vingegaard-fotbal-zlomenina-kontroverze-i-zrada-roglice-co-jste-o-nem-nevedeli\"\/<\/a><\/div>
\n Cyklistika<\/a>\n <\/div>\n
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Jonas Vingegaard: fotbal, zlomenina, kontroverze i zrada Rogli\u010de. Co jste o n\u011bm nev\u011bd\u011bli?<\/span><\/h3>\n <\/a>\n <\/div>\n <\/article>\n<\/div>\n

A co b\u011b\u017en\u00ed cyklist\u00e9, kte\u0159\u00ed limitem v\u00e1zan\u00ed nejsou? Ani tady to nen\u00ed tak jednozna\u010dn\u00e9, jak by se mohlo zd\u00e1t. Ano, m\u016f\u017eete jezdit na kole o hmotnosti 5,9 kg. Pocitov\u011b p\u016fsob\u00ed \u017eiv\u011bji, l\u00e9pe akceleruje a jede. Jen\u017ee \u010dist\u011b fyzik\u00e1ln\u011b bude dob\u0159e navr\u017een\u00e9 aero kolo, kter\u00e9 je o kilo t\u011b\u017e\u0161\u00ed, ve v\u011bt\u0161in\u011b sc\u00e9n\u00e1\u0159\u016f st\u00e1le rychlej\u0161\u00ed.<\/span><\/p>\n

Rozd\u00edl je \u010dasto sp\u00ed\u0161 v pocitu ne\u017e v realit\u011b. Placebo efekt, kter\u00fd poskytuje lehk\u00e9 kolo, je siln\u00fd \u2013 ale aerodynamika vyhr\u00e1v\u00e1 i u hobby jezdc\u016f. Zvl\u00e1\u0161\u0165 na del\u0161\u00edch tras\u00e1ch, kde se st\u0159\u00eddaj\u00ed stoup\u00e1n\u00ed, roviny a sjezdy.<\/span><\/p>\n

Lehk\u00e1 kola neum\u0159ela<\/strong><\/h2>\n

Tak\u017ee jsou lehk\u00e1 kola mrtv\u00e1? Ne tak \u00fapln\u011b. Maj\u00ed toti\u017e jednu obrovskou v\u00fdhodu: z\u00e1bavnost.<\/span><\/p>\n

Jsou hrav\u011bj\u0161\u00ed, citliv\u011bj\u0161\u00ed, \u010dasto pohodln\u011bj\u0161\u00ed. Komfort se v debat\u00e1ch o v\u00fdkonu \u010dasto opom\u00edj\u00ed, p\u0159esto m\u00e1 na dlouh\u00fdch j\u00edzd\u00e1ch z\u00e1sadn\u00ed vliv. Aero kola b\u00fdvaj\u00ed tvrd\u0161\u00ed a m\u00e9n\u011b odpou\u0161t\u011bj\u00ed chyby. Rychlej\u0161\u00ed ano, ale ne v\u017edy p\u0159\u00edjemn\u011bj\u0161\u00ed.<\/span><\/p>\n

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Zobrazit p\u0159\u00edsp\u011bvek na Instagramu<\/div>\n<\/div>\n
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P\u0159\u00edsp\u011bvek sd\u00edlen\u00fd Team Visma | Lease a Bike (@teamvisma_leaseabike)<\/a><\/p>\n<\/div>\n<\/blockquote>\n