{"id":1321,"date":"2025-06-16T11:42:17","date_gmt":"2025-06-16T11:42:17","guid":{"rendered":"https:\/\/1pneu.eu\/pneublog\/?p=1321"},"modified":"2025-06-16T11:42:18","modified_gmt":"2025-06-16T11:42:18","slug":"nedotacivost-pretacivost","status":"publish","type":"post","link":"https:\/\/1pneu.eu\/pneublog\/nedotacivost-pretacivost\/","title":{"rendered":"Nedot\u00e1\u010divost nebo p\u0159et\u00e1\u010divost: jak\u00fd je rozd\u00edl?"},"content":{"rendered":"\n<p class=\"has-medium-font-size\"><strong>Zm\u011bnily se j\u00edzdn\u00ed vlastnosti va\u0161eho vozu v zat\u00e1\u010dk\u00e1ch?<\/strong><br><\/p>\n\n\n\n<p class=\"has-small-font-size\">M\u00e1te pocit, \u017ee i kdy\u017e ot\u00e1\u010d\u00edte volantem, auto nesleduje po\u017eadovan\u00fd sm\u011br? Nebo se naopak p\u0159i m\u00edrn\u00e9m pohybu volantem auto ot\u00e1\u010d\u00ed p\u0159\u00edli\u0161 ost\u0159e? Mo\u017en\u00e1 se jedn\u00e1 o probl\u00e9m p\u0159et\u00e1\u010divosti nebo nedot\u00e1\u010divosti.<br>V tomto \u010dl\u00e1nku v\u00e1m podrobn\u011b vysv\u011btl\u00edme p\u0159\u00ed\u010diny a \u0159e\u0161en\u00ed t\u011bchto b\u011b\u017en\u00fdch technick\u00fdch probl\u00e9m\u016f!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Co se d\u011bje p\u0159i zat\u00e1\u010den\u00ed?<\/strong><\/h2>\n\n\n\n<p>Ne\u017e si vysv\u011btl\u00edme p\u0159\u00edznaky nedot\u00e1\u010divosti a p\u0159et\u00e1\u010divosti, je d\u016fle\u017eit\u00e9 pochopit z\u00e1kladn\u00ed fyzik\u00e1ln\u00ed d\u011bje, kter\u00e9 p\u0159i zat\u00e1\u010den\u00ed nast\u00e1vaj\u00ed. To n\u00e1m pom\u016f\u017ee l\u00e9pe porozum\u011bt p\u0159\u00ed\u010din\u00e1m a mo\u017en\u00fdm \u0159e\u0161en\u00edm technick\u00fdch probl\u00e9m\u016f.<\/p>\n\n\n\n<p>P\u0159i zato\u010den\u00ed volantem m\u011bn\u00edte sm\u011br pohybu vozidla \u2013 m\u00edsto p\u0159\u00edm\u00e9 j\u00edzdy se v\u016fz pohybuje po kruhov\u00e9 dr\u00e1ze.<\/p>\n\n\n\n<p>Tak jako u ka\u017ed\u00e9ho kruhov\u00e9ho pohybu, i zde p\u016fsob\u00ed odst\u0159ediv\u00e1 s\u00edla, kter\u00e1 by v\u016fz \u201etla\u010dila\u201c ven ze zat\u00e1\u010dky \u2013 podobn\u011b jako odst\u0159e\u010fov\u00e1n\u00ed pr\u00e1dla v bubnu pra\u010dky.<\/p>\n\n\n\n<p>Tato s\u00edla je vyrovn\u00e1v\u00e1na p\u0159ilnavost\u00ed pneumatik k povrchu vozovky. Pokud je p\u0159ilnavost dostate\u010dn\u00e1, vozidlo projede zat\u00e1\u010dku v po\u017eadovan\u00e9m \u00fahlu.<\/p>\n\n\n\n<p>B\u011bhem zat\u00e1\u010den\u00ed p\u016fsob\u00ed na pneumatiky sou\u010dasn\u011b odst\u0159ediv\u00e1 s\u00edla a s\u00edla p\u0159ilnavosti, kter\u00e9 maj\u00ed opa\u010dn\u00fd sm\u011br. D\u00edky elastick\u00e9mu materi\u00e1lu pneumatik dok\u00e1\u017e\u00ed tyto s\u00edly vyrovn\u00e1vat bez okam\u017eit\u00e9 ztr\u00e1ty p\u0159ilnavosti.<\/p>\n\n\n\n<p>Vznik\u00e1 tzv. <strong>\u00fahel smyku<\/strong>, co\u017e je podle studijn\u00edch materi\u00e1l\u016f z Obchodn\u00ed univerzity \u201e\u00fahel \u03b4 mezi rovinou ot\u00e1\u010den\u00ed kola a p\u016fvodn\u00edm sm\u011brem pohybu (vektorem obvodov\u00e9 rychlosti)\u201c.<\/p>\n\n\n\n<p>Jak zat\u00e1\u010dka pokra\u010duje, zvy\u0161uje se bo\u010dn\u00ed zat\u00ed\u017een\u00ed a t\u00edm i \u00fahel smyku.<\/p>\n\n\n\n<p>Pokud p\u0159ilnavost v ur\u010dit\u00e9m bod\u011b nesta\u010d\u00ed, kolo ztr\u00e1c\u00ed kontakt s vozovkou a doch\u00e1z\u00ed ke smyku.<br>V n\u00e1sleduj\u00edc\u00ed \u010d\u00e1sti pop\u00ed\u0161eme dva nej\u010dast\u011bj\u0161\u00ed typy smyku p\u0159i zat\u00e1\u010den\u00ed: <strong>nedot\u00e1\u010divost<\/strong> a <strong>p\u0159et\u00e1\u010divost<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Dva b\u011b\u017en\u00e9 probl\u00e9my p\u0159i zat\u00e1\u010den\u00ed<\/strong><\/h2>\n\n\n\n<p>P\u0159i zat\u00e1\u010den\u00ed p\u016fsob\u00ed na ka\u017edou n\u00e1pravu odli\u0161n\u00e9 zat\u00ed\u017een\u00ed, co\u017e zp\u016fsobuje rozd\u00edln\u00e9 \u00fahly smyku mezi p\u0159edn\u00edmi a zadn\u00edmi koly. Tento rozd\u00edl m\u016f\u017ee v\u00e9st k nedot\u00e1\u010div\u00e9mu nebo p\u0159et\u00e1\u010div\u00e9mu chov\u00e1n\u00ed vozidla.<br><strong>Co to znamen\u00e1 v praxi?<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Nedot\u00e1\u010divost<\/strong><\/h3>\n\n\n\n<p>Podle pozn\u00e1mek mechatronick\u00e9 in\u017een\u00fdrky Szilvie T\u00f3th znamen\u00e1 nedot\u00e1\u010divost n\u00e1sleduj\u00edc\u00ed:<\/p>\n\n\n\n<p>\u201eT\u011b\u017ei\u0161t\u011b vozidla je bl\u00ed\u017ee p\u0159edn\u00ed n\u00e1prav\u011b, co\u017e vede k v\u011bt\u0161\u00edmu smyku p\u0159edn\u00edch pneumatik. V zat\u00e1\u010dce p\u0159edn\u00ed kola klou\u017eou m\u00edsto toho, aby zat\u00e1\u010dela. \u03b4p &gt; \u03b4z, tedy \u00fahel smyku p\u0159edn\u00edch kol je v\u011bt\u0161\u00ed ne\u017e u zadn\u00edch. Polom\u011br zat\u00e1\u010dky se zv\u011bt\u0161uje, zat\u00e1\u010dka se narovn\u00e1v\u00e1.\u201c<\/p>\n\n\n\n<p>Jednodu\u0161e \u0159e\u010deno: pokud maj\u00ed p\u0159edn\u00ed kola v\u011bt\u0161\u00ed \u00fahel smyku, jedn\u00e1 se o <strong>nedot\u00e1\u010div\u00e9 chov\u00e1n\u00ed<\/strong>. V praxi se auto \u201etla\u010d\u00ed\u201c sm\u011brem ven ze zat\u00e1\u010dky, jako by volant nebyl dostate\u010dn\u011b oto\u010den\u00fd.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>P\u0159et\u00e1\u010divost<\/strong><\/h3>\n\n\n\n<p>Podle materi\u00e1l\u016f z Obchodn\u00ed univerzity znamen\u00e1 p\u0159et\u00e1\u010divost:<\/p>\n\n\n\n<p>\u201eT\u011b\u017ei\u0161t\u011b vozidla je bl\u00ed\u017ee zadn\u00ed n\u00e1prav\u011b, co\u017e zp\u016fsobuje v\u011bt\u0161\u00ed smyk zadn\u00edch pneumatik. P\u0159i zat\u00e1\u010den\u00ed doch\u00e1z\u00ed ke smyku zadn\u00ed \u010d\u00e1sti vozidla. \u03b4p &lt; \u03b4z, tedy \u00fahel smyku p\u0159edn\u00edch kol je men\u0161\u00ed ne\u017e u zadn\u00edch. Polom\u011br zat\u00e1\u010dky se zmen\u0161uje, zadn\u00ed \u010d\u00e1st vozidla se dost\u00e1v\u00e1 do smyku.\u201c<\/p>\n\n\n\n<p>Tedy: pokud maj\u00ed zadn\u00ed kola v\u011bt\u0161\u00ed \u00fahel smyku, vozidlo se chov\u00e1 <strong>p\u0159et\u00e1\u010div\u011b<\/strong> \u2013 zadn\u00ed \u010d\u00e1st se p\u0159i zat\u00e1\u010den\u00ed st\u00e1\u010d\u00ed v\u00edce, ne\u017e bychom cht\u011bli. \u0158idi\u010d m\u00e1 pocit, \u017ee \u201ep\u0159eto\u010dil volant\u201c nebo \u017ee se zadek auta \u201eutrhl\u201c.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Co d\u011blat p\u0159i nedot\u00e1\u010divosti nebo p\u0159et\u00e1\u010divosti?<\/strong><\/h2>\n\n\n\n<p>Na\u0161t\u011bst\u00ed existuje n\u011bkolik mo\u017enost\u00ed, jak t\u011bmto stav\u016fm p\u0159edej\u00edt nebo je minimalizovat.<br>Zde jsou doporu\u010den\u00e1 opat\u0159en\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Zkontrolujte tlak v pneumatik\u00e1ch!<\/strong><br>N\u00edzk\u00fd tlak zvy\u0161uje, zat\u00edmco vy\u0161\u0161\u00ed tlak sni\u017euje \u00fahel smyku. Tlak lze upravovat v r\u00e1mci doporu\u010den\u00e9ho rozmez\u00ed a t\u00edm ovlivnit chov\u00e1n\u00ed vozu.<\/li>\n\n\n\n<li><strong>Pou\u017eit\u00ed nespr\u00e1vn\u00e9ho rozm\u011bru pneumatik<\/strong> m\u016f\u017ee v\u00e9st k nestabiln\u00edmu chov\u00e1n\u00ed.<br>Pokud m\u00e1te podez\u0159en\u00ed na probl\u00e9m s j\u00edzdn\u00ed stabilitou, nechte odborn\u00edka zkontrolovat, zda jsou pneumatiky vhodn\u00e9 pro va\u0161e vozidlo.<br>Pokud pl\u00e1nujete n\u00e1kup nov\u00fdch pneumatik, <strong>vyu\u017eijte n\u00e1\u0161 vyhled\u00e1va\u010d podle typu vozidla.<\/strong><\/li>\n\n\n\n<li><strong>Opot\u0159ebovan\u00e9 pneumatiky<\/strong> se ztvrdl\u00fdm b\u011bhounem mohou zp\u016fsobit pocit smyku i p\u0159i b\u011b\u017en\u00e9m zat\u00e1\u010den\u00ed.<br>V takov\u00e9m p\u0159\u00edpad\u011b je nutn\u00e1 v\u00fdm\u011bna za nov\u00e9 pneumatiky.<br><strong>Pod\u00edvejte se na na\u0161i \u0161irokou nab\u00eddku!<\/strong><\/li>\n\n\n\n<li><strong>Nechte se\u0159\u00eddit geometrii podvozku<\/strong> \u2013 nespr\u00e1vn\u011b nastaven\u00e9 zav\u011b\u0161en\u00ed kol m\u016f\u017ee v\u00fdrazn\u011b ovlivnit smykov\u00e9 chov\u00e1n\u00ed.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/1pneu.eu\/pneublog\/wp-content\/uploads\/2025\/06\/tulkormanyzottsag-1024x682.jpeg\" alt=\"\" class=\"wp-image-1322\" style=\"object-fit:cover;width:1200px;height:628px\" srcset=\"https:\/\/1pneu.eu\/pneublog\/wp-content\/uploads\/2025\/06\/tulkormanyzottsag-1024x682.jpeg 1024w, https:\/\/1pneu.eu\/pneublog\/wp-content\/uploads\/2025\/06\/tulkormanyzottsag-300x200.jpeg 300w, https:\/\/1pneu.eu\/pneublog\/wp-content\/uploads\/2025\/06\/tulkormanyzottsag-768x511.jpeg 768w, https:\/\/1pneu.eu\/pneublog\/wp-content\/uploads\/2025\/06\/tulkormanyzottsag.jpeg 1500w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u010casto kladen\u00e9 dotazy<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Co d\u011blat, pokud je vozidlo nedot\u00e1\u010div\u00e9 nebo p\u0159et\u00e1\u010div\u00e9?<\/h3>\n\n\n\n<p>Vzhledem k tomu, \u017ee tyto stavy mohou v\u00fdrazn\u011b zv\u00fd\u0161it riziko nehody, doporu\u010dujeme p\u0159i jak\u00e9mkoli nestandardn\u00edm chov\u00e1n\u00ed vozidla v zat\u00e1\u010dk\u00e1ch <strong>okam\u017eit\u011b vyhledat autorizovan\u00fd servis<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Je j\u00edzda s nedot\u00e1\u010div\u00fdm nebo p\u0159et\u00e1\u010div\u00fdm vozem nebezpe\u010dn\u00e1?<\/h3>\n\n\n\n<p><strong>Ano.<\/strong> Pokud se p\u0159edn\u00ed nebo zadn\u00ed \u010d\u00e1st vozu chov\u00e1 jinak, ne\u017e by m\u011bla, m\u016f\u017ee doj\u00edt ke ztr\u00e1t\u011b kontroly nad vozidlem a n\u00e1sledn\u00e9mu smyku.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kter\u00e1 \u010d\u00e1st vozidla klou\u017ee p\u0159i nedot\u00e1\u010divosti jako prvn\u00ed?<\/h3>\n\n\n\n<p>P\u0159i <strong>nedot\u00e1\u010divosti<\/strong> jako prvn\u00ed ztr\u00e1c\u00ed p\u0159ilnavost <strong>p\u0159edn\u00ed kola<\/strong>, tak\u017ee v\u016fz \u201ejede rovn\u011b\u201c i p\u0159es nato\u010den\u00fd volant.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Zm\u011bnil se zp\u016fsob, jak\u00fdm se va\u0161e auto chov\u00e1 v zat\u00e1\u010dk\u00e1ch? Vysv\u011btlujeme rozd\u00edl mezi nedot\u00e1\u010divost\u00ed a p\u0159et\u00e1\u010divost\u00ed, jejich p\u0159\u00ed\u010diny a jak tyto situace bezpe\u010dn\u011b \u0159e\u0161it.<\/p>\n","protected":false},"author":1,"featured_media":1323,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[79],"tags":[120,121],"class_list":["post-1321","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technicky-poradce","tag-bezpecnost-jizdy","tag-jizdni-vlastnosti"],"_links":{"self":[{"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/posts\/1321","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/comments?post=1321"}],"version-history":[{"count":2,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/posts\/1321\/revisions"}],"predecessor-version":[{"id":1325,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/posts\/1321\/revisions\/1325"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/media\/1323"}],"wp:attachment":[{"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/media?parent=1321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/categories?post=1321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/tags?post=1321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}