{"id":8777,"date":"2020-07-19T09:00:37","date_gmt":"2020-07-19T07:00:37","guid":{"rendered":"https:\/\/www.welovecycling.com\/cs\/?p=8777"},"modified":"2020-07-16T10:25:01","modified_gmt":"2020-07-16T08:25:01","slug":"kdy-vymenit-retez-na-kole","status":"publish","type":"post","link":"https:\/\/www.welovecycling.com\/cs\/2020\/07\/19\/kdy-vymenit-retez-na-kole\/","title":{"rendered":"Kdy vym\u011bnit \u0159et\u011bz na kole?"},"content":{"rendered":"<p><strong>O tom, \u017ee se \u0159et\u011bz j\u00edzdn\u00edho kola v pr\u016fb\u011bhu pou\u017e\u00edv\u00e1n\u00ed opot\u0159ebov\u00e1v\u00e1, sly\u0161el asi ka\u017ed\u00fd. Ne ka\u017ed\u00fd ov\u0161em v\u011bnuje tomuto komponentu pat\u0159i\u010dnou pozornost. Z\u00e1kladn\u00ed \u00fakony \u00fadr\u017eby jsou p\u0159itom velmi jednoduch\u00e9 a tak\u00e9 kontrola opot\u0159eben\u00ed zabere sotva p\u00e1r vte\u0159in.\u00a0<\/strong><\/p>\n<p>Opot\u0159ebovan\u00fd \u0159et\u011bz se lidov\u011b ozna\u010duje term\u00ednem \u201evytahan\u00fd\u201c, co\u017e m\u016f\u017ee v\u00e9st k myln\u00e9 p\u0159edstav\u011b, \u017ee vlivem \u0161lap\u00e1n\u00ed doch\u00e1z\u00ed k nata\u017een\u00ed materi\u00e1lu jednotliv\u00fdch \u010dl\u00e1nk\u016f. Ve skute\u010dnosti ale k prota\u017een\u00ed \u0159et\u011bzu doch\u00e1z\u00ed kv\u016fli opot\u0159eben\u00ed jednotliv\u00fdch \u010dep\u016f a v\u00e1le\u010dk\u016f a tedy zv\u011bt\u0161en\u00ed v\u016fl\u00ed mezi nimi. K nav\u00fd\u0161en\u00ed \u017eivotnosti \u0159et\u011bzu m\u016f\u017eeme p\u0159isp\u011bt pravidelnou \u00fadr\u017ebou, zejm\u00e9na maz\u00e1n\u00edm, kter\u00e9 opot\u0159eben\u00ed \u010dep\u016f a v\u00e1le\u010dk\u016f sn\u00ed\u017e\u00ed.<\/p>\n<p>Existuje cel\u00e1 \u0159ada speci\u00e1ln\u00edch maziv li\u0161\u00edc\u00edch se sv\u00fdmi vlastnostmi. Z hlediska \u017eivotnosti \u0159et\u011bzu nen\u00ed a\u017e tak podstatn\u00e9, jak\u00fd typ maziva zvol\u00edte, d\u016fle\u017eit\u011bj\u0161\u00ed je, aby jej bylo mezi \u010depy a pouzdry neust\u00e1le dostatek. I oby\u010dejn\u00fd miner\u00e1ln\u00ed olej tedy odvede svou pr\u00e1ci, ale vy\u017e\u00e1d\u00e1 si \u010dast\u011bj\u0161\u00ed domaz\u00e1v\u00e1n\u00ed, t\u0159eba po ka\u017ed\u00e9 vyj\u00ed\u017e\u010fce. Naopak speci\u00e1ln\u00ed na \u0159et\u011bzy ur\u010den\u00e1 maziva b\u00fdvaj\u00ed hust\u0161\u00ed a vydr\u017e\u00ed plnit svou \u00falohu i stovky kilometr\u016f.<\/p>\n<div class=\"shortcode-ys-post-pinup\"><article class=\"loop-simple post-8117 post type-post status-publish format-standard has-post-thumbnail hentry category-rady-tipy tag-cyklisticke-naradi tag-horska-cyklistika tag-integrovane-naradi tag-jak-ulozit-naradi tag-silnicni-cyklistika global-categories-cycling\" data-postid=\"8117\" role=\"article\" data-post-id=\"8117\" data-word-count=\"508\" data-headline-length=\"46\" data-category=\"Rady &amp; tipy\" data-global-category=\"Cycling\" data-author=\"Kry\u0161tof Kopic\" data-published=\"2020-07-01T18:00:16+02:00\" data-published-day=\"Wednesday\">\n    <div class=\"entry-thumbnail article-thumbnail\" content=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-DSC_3635-1170x781-1-150x150.webp\"><a href=\"https:\/\/www.welovecycling.com\/cs\/2020\/07\/01\/schovky-pro-naradi-ii-univerzalni-reseni\/\" class=\"image-holder\" target=\"_self\"><img decoding=\"async\" loading=\"lazy\" class=\"\" src=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-DSC_3635-1170x781-1-1024x684.webp\" srcset=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-DSC_3635-1170x781-1.webp 1170w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-DSC_3635-1170x781-1-300x200.webp 300w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-DSC_3635-1170x781-1-1024x684.webp 1024w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-DSC_3635-1170x781-1-768x513.webp 768w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/06\/WLC-DSC_3635-1170x781-1-272x182.webp 272w\" width=\"1024\" height=\"684\" sizes=\"auto, (min-width: 1200px) 300px, (min-width: 768px) 25vw, 100vw\" alt=\"schovky-pro-naradi-ii-univerzalni-reseni\"\/><\/a><\/div>    <div class=\"entry-meta\">\n        <a class=\"label label-secondary post-category\" href=\"https:\/\/www.welovecycling.com\/cs\/category\/rady-tipy\/\" title=\"Rady &amp; tipy\">Rady &amp; tipy<\/a>\n    <\/div>\n    <div class=\"entry-details\">\n        <a href=\"https:\/\/www.welovecycling.com\/cs\/2020\/07\/01\/schovky-pro-naradi-ii-univerzalni-reseni\/\" class='entry-title-wrapper'>\n            <h3 class=\"entry-title\"><span>Schovky pro n\u00e1\u0159ad\u00ed. Univerz\u00e1ln\u00ed \u0159e\u0161en\u00ed<\/span><\/h3>\n        <\/a>\n    <\/div>\n    <\/article>\n<\/div>\n<p>Negativn\u00ed vliv na \u017eivotnost \u0159et\u011bzu m\u00e1 zne\u010di\u0161t\u011bn\u00ed pohonu, proto\u017ee ne\u010distoty v\u00e1zan\u00e9 na mazivo zvy\u0161uj\u00ed abrazivn\u00ed opot\u0159eben\u00ed. Prevence je jednoduch\u00e1 \u2013 pou\u017e\u00edvat \u201enelepiv\u00e1\u201c maziva (s v\u00fdjimkou j\u00edzd v de\u0161tiv\u00fdch podm\u00ednk\u00e1ch) a v\u017edy po namaz\u00e1n\u00ed z \u0159et\u011bzu ot\u0159\u00edt hadrem p\u0159ebytky.<\/p>\n<p>Jednou za \u010das je vhodn\u00e9 \u0159et\u011bz vy\u010distit d\u016fkladn\u011bji, bu\u010f v takzvan\u00e9 pra\u010dce na \u0159et\u011bz (stoj\u00ed cca od 200 K\u010d), nebo jej z kola sejmout (ocen\u00edte rychlospojku) a vyprat jej v l\u00e1zni nap\u0159\u00edklad s petrolejem. Pokud se v\u00e1m do takov\u00fdch \u00fakon\u016f nechce, m\u016f\u017eete je do zna\u010dn\u00e9 m\u00edry nahradit pravideln\u00fdm pe\u010dliv\u00fdm ot\u0159en\u00edm. Nezapome\u0148te p\u0159i tom ani na kazetu, kladky p\u0159ehazova\u010dky a p\u0159evodn\u00edky.<\/p>\n<h2><strong>Kolik \u0159et\u011bz vydr\u017e\u00ed?<\/strong><\/h2>\n<p>Ani sebel\u00e9pe udr\u017eovan\u00fd \u0159et\u011bz v\u0161ak nebude slou\u017eit v\u011b\u010dn\u011b. A proto\u017ee u j\u00edzdn\u00edho kola neexistuje \u017e\u00e1dn\u00fd p\u0159edepsan\u00fd interval v\u00fdm\u011bny, je nutn\u00e9 pravideln\u011b sledovat opot\u0159eben\u00ed. Na \u017eivotnost maj\u00ed z\u00e1sadn\u00ed vliv kvalita materi\u00e1lu \u0159et\u011bzu, hmotnost jezdce, j\u00edzdn\u00ed styl, typ pohonu nebo provozn\u00ed podm\u00ednky. V z\u00e1vislosti na t\u011bchto prom\u011bnn\u00fdch najedete na \u0159et\u011bzu 500\u20135000 km. V\u011bt\u0161ina rekrea\u010dn\u00edch MTB jezdc\u016f m\u011bn\u00ed \u0159et\u011bz mezi 1000 a 2000 km, ale opravdu se ned\u00e1 p\u0159\u00edli\u0161 zobec\u0148ovat, je nutn\u00e9 m\u011b\u0159it.<\/p>\n<p>Kontrola opot\u0159eben\u00ed \u0159et\u011bzu se b\u011b\u017en\u011b prov\u00e1d\u00ed dv\u011bma zp\u016fsoby. Prvn\u00ed mo\u017enost\u00ed jsou speci\u00e1ln\u00ed m\u011brky, kter\u00e9 koup\u00edte u\u017e zhruba za stokorunu. M\u011brku jednodu\u0161e bez pou\u017eit\u00ed s\u00edly zasuneme do \u0159et\u011bzu nad \u0159et\u011bzovou vzp\u011brou r\u00e1mu, tlakem na ped\u00e1l napneme \u0159et\u011bz a z boku zkontrolujeme, nakolik se do n\u011bj m\u011brka zano\u0159ila.<\/p>\n<p><a href=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/07\/et\u011bz-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8790\" src=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/07\/et\u011bz-2.jpg\" alt=\"m\u011brka \u0159et\u011bz\" width=\"3571\" height=\"2009\" \/><\/a><\/p>\n<p>Proveden\u00ed a stupnice jednotliv\u00fdch m\u011brek se r\u016fzn\u00ed, ale zpravidla zde b\u00fdv\u00e1 vyzna\u010dena hodnota opot\u0159eben\u00ed 0,75 %, kter\u00e1 je pro v\u00fdm\u011bnu ide\u00e1ln\u00ed. Pokud m\u00e1 m\u011brka v\u00edce stup\u0148\u016f, pova\u017euje se za ide\u00e1l pro v\u00fdm\u011bnu p\u0159edposledn\u00ed \u201ezoubek\u201c. Nikdy by nem\u011blo doj\u00edt k \u00fapln\u00e9mu propadnut\u00ed m\u011brky \u0159et\u011bzem.<\/p>\n<div class=\"shortcode-ys-post-pinup\"><article class=\"loop-simple post-6537 post type-post status-publish format-standard has-post-thumbnail hentry category-rady-tipy category-silnicni-cyklistika category-https-www-welovecycling-com-cs-category-zabava tag-bikepacking tag-cykloturistika tag-trenink global-categories-cycling\" data-postid=\"6537\" role=\"article\" data-post-id=\"6537\" data-word-count=\"453\" data-headline-length=\"70\" data-category=\"Rady &amp; tipy\" data-global-category=\"Cycling\" data-author=\"Pavel Popelka\" data-published=\"2020-04-09T17:00:01+02:00\" data-published-day=\"Thursday\">\n    <div class=\"entry-thumbnail article-thumbnail\" content=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/04\/bikepacking-7-150x150.webp\"><a href=\"https:\/\/www.welovecycling.com\/cs\/2020\/04\/09\/kolo-na-bikepacking-bambus-karbon-ci-slitiny-z-leteckeho-prumyslu\/\" class=\"image-holder\" target=\"_self\"><img decoding=\"async\" loading=\"lazy\" class=\"\" src=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/04\/bikepacking-7-1024x683.webp\" srcset=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/04\/bikepacking-7-scaled.webp 2560w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/04\/bikepacking-7-300x200.webp 300w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/04\/bikepacking-7-1024x683.webp 1024w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/04\/bikepacking-7-768x512.webp 768w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/04\/bikepacking-7-1536x1024.webp 1536w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/04\/bikepacking-7-2048x1365.webp 2048w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/04\/bikepacking-7-1920x1280.webp 1920w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/04\/bikepacking-7-272x182.webp 272w, https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/04\/bikepacking-7-1920x1280.webp 1920w\" width=\"1024\" height=\"683\" sizes=\"auto, (min-width: 1200px) 300px, (min-width: 768px) 25vw, 100vw\" alt=\"kolo-na-bikepacking-bambus-karbon-ci-slitiny-z-leteckeho-prumyslu\"\/><\/a><\/div>    <div class=\"entry-meta\">\n        <a class=\"label label-secondary post-category\" href=\"https:\/\/www.welovecycling.com\/cs\/category\/rady-tipy\/\" title=\"Rady &amp; tipy\">Rady &amp; tipy<\/a>\n    <\/div>\n    <div class=\"entry-details\">\n        <a href=\"https:\/\/www.welovecycling.com\/cs\/2020\/04\/09\/kolo-na-bikepacking-bambus-karbon-ci-slitiny-z-leteckeho-prumyslu\/\" class='entry-title-wrapper'>\n            <h3 class=\"entry-title\"><span>Kolo na bikepacking? Bambus, karbon \u010di slitiny z leteck\u00e9ho pr\u016fmyslu<\/span><\/h3>\n        <\/a>\n    <\/div>\n    <\/article>\n<\/div>\n<p>Jako alternativa k m\u011brce se nab\u00edz\u00ed posuvn\u00e9 m\u011b\u0159\u00edtko. Tento zp\u016fsob je tak\u00e9 p\u0159esn\u011bj\u0161\u00ed \u2013 kvalitn\u00ed posuvka je spolehliv\u011bj\u0161\u00ed ne\u017e kus pochybn\u011b kalibrovan\u00e9ho plechu. Na stupnici nastav\u00edme hodnotu 132 mm, zasuneme \u010delisti m\u011b\u0159\u00edtka mezi \u010dl\u00e1nky a rozt\u00e1hneme je. U nov\u00e9ho \u0159et\u011bzu b\u00fdv\u00e1 vzd\u00e1lenost mezi jeden\u00e1cti \u010dl\u00e1nky okolo 132,1 mm a nejpozd\u011bji u hodnoty 132,9 mm bychom m\u011bli \u0159et\u011bz vym\u011bnit.<\/p>\n<h2><strong>Kdy\u017e u\u017e je pozd\u011b<\/strong><\/h2>\n<p>Kouzlo pravideln\u00e9 v\u00fdm\u011bny spo\u010d\u00edv\u00e1 nejen v efektivit\u011b p\u0159enosu energie, ale i v prodlou\u017een\u00ed \u017eivotnosti ozuben\u00ed na kazet\u011b a p\u0159evodn\u00edc\u00edch. Jestli\u017ee \u0159et\u011bz m\u011bn\u00edme v\u010das, \u201ep\u0159e\u017eije\u201c ozuben\u00ed n\u011bkolik \u0159et\u011bz\u016f (v z\u00e1vislosti na kvalit\u011b t\u0159eba p\u011bt i v\u00edce). Jestli\u017ee ale m\u011brka uk\u00e1\u017ee opot\u0159eben\u00ed okolo jednoho procenta (v\u011bt\u0161ina je zkonstruov\u00e1na tak, \u017ee \u010dl\u00e1nkem \u0159et\u011bzu zcela propadne) nebo se posuvka rozev\u0159e nad 132,9 mm, hroz\u00ed nebezpe\u010d\u00ed, \u017ee je ozuben\u00ed pastork\u016f prota\u017een\u00fdmi \u010dl\u00e1nky ji\u017e natolik deformovan\u00e9, \u017ee na n\u011bm bude nov\u00fd \u0159et\u011bz p\u0159eskakovat, takzvan\u011b st\u0159\u00edlet.<\/p>\n<figure id=\"attachment_8791\" aria-describedby=\"caption-attachment-8791\" style=\"width: 3549px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/07\/et\u011bz-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8791\" src=\"https:\/\/d2p6e6u75xmxt8.cloudfront.net\/13\/2020\/07\/et\u011bz-3.jpg\" alt=\"M\u011brka \u0159et\u011bz\" width=\"3549\" height=\"1996\" \/><\/a><figcaption id=\"caption-attachment-8791\" class=\"wp-caption-text\"><em>Pokud se p\u0159i kontrole \u0159et\u011bzu posuvnou m\u011brkou dostanete p\u0159es hodnotu 132,9 mm, nade\u0161el \u010das pro v\u00fdm\u011bnu.<\/em><\/figcaption><\/figure>\n<p>K tomuto jevu doch\u00e1z\u00ed p\u0159i siln\u00e9m z\u00e1b\u011bru v\u011bt\u0161inou na nejv\u00edce pou\u017e\u00edvan\u00fdch pastorc\u00edch ve st\u0159edu kazety. Pokud \u0159et\u011bz p\u0159esko\u010d\u00ed jen v\u00fdjime\u010dn\u011b, m\u016f\u017eete doufat, \u017ee se b\u011bhem p\u00e1r des\u00edtek kilometr\u016f prot\u00e1hne natolik, aby probl\u00e9my ustaly. Je-li ale st\u0159\u00edlen\u00ed intenz\u00edvn\u00ed (\u010dasto se na kole nelze ani rozjet), nevyhnete se koupi nov\u00e9 kazety. Opot\u0159eben\u00e9 p\u0159evodn\u00edky neb\u00fdvaj\u00ed tolik n\u00e1chyln\u00e9 k p\u0159eskakov\u00e1n\u00ed \u0159et\u011bzu jako sp\u00ed\u0161e k jeho \u201enabalov\u00e1n\u00ed\u201c p\u0159i \u0159azen\u00ed. Tento probl\u00e9m ale nast\u00e1v\u00e1 pozd\u011bji ne\u017e p\u0159eskakov\u00e1n\u00ed na kazet\u011b.<\/p>\n<p>Jestli\u017ee jste ide\u00e1ln\u00ed moment pro v\u00fdm\u011bnu \u0159et\u011bzu prop\u00e1sli a z n\u011bjak\u00e9ho d\u016fvodu nechcete investovat do nov\u00e9 kazety, existuje je\u0161t\u011b jedno \u0159e\u0161en\u00ed \u2013 ponechat star\u00fd \u0159et\u011bz tak dlouho, dokud bude pohon uspokojiv\u011b fungovat. Cel\u00fd syst\u00e9m se toti\u017e opot\u0159ebov\u00e1v\u00e1 rovnom\u011brn\u011b a d\u00edky tomu se funkce zhor\u0161uje t\u00e9m\u011b\u0159 neznateln\u011b. V extr\u00e9mn\u00edm p\u0159\u00edpad\u011b lze takto najet a\u017e des\u00edtky tis\u00edc kilometr\u016f. Pak ov\u0161em roste riziko probl\u00e9m\u016f (p\u0159eskakov\u00e1n\u00ed \u0159et\u011bzu, zhor\u0161en\u00e9 \u0159azen\u00ed, p\u0159etr\u017een\u00ed&#8230;) a z\u00e1rove\u0148 \u010d\u00e1stka, kterou si obnova pohonu vy\u017e\u00e1d\u00e1.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O tom, \u017ee se \u0159et\u011bz j\u00edzdn\u00edho kola v pr\u016fb\u011bhu pou\u017e\u00edv\u00e1n\u00ed opot\u0159ebov\u00e1v\u00e1, sly\u0161el asi ka\u017ed\u00fd. Ne ka\u017ed\u00fd ov\u0161em v\u011bnuje tomuto komponentu [&hellip;]<\/p>\n","protected":false},"author":122,"featured_media":8792,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[126,1034,1032,27],"global-categories":[411],"class_list":["post-8777","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rady-tipy","tag-cyklistika","tag-jak-vymenit-retez","tag-retez","tag-trenink","global-categories-cycling"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.3 (Yoast SEO v25.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kdy vym\u011bnit \u0159et\u011bz na kole? | \u0160koda We Love Cycling - \u010cesk\u00e1 republika<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.welovecycling.com\/cs\/2020\/07\/19\/kdy-vymenit-retez-na-kole\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kdy vym\u011bnit \u0159et\u011bz na kole?\" \/>\n<meta property=\"og:description\" content=\"O tom, \u017ee se \u0159et\u011bz j\u00edzdn\u00edho kola v pr\u016fb\u011bhu pou\u017e\u00edv\u00e1n\u00ed opot\u0159ebov\u00e1v\u00e1, sly\u0161el asi ka\u017ed\u00fd. 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