V minulosti r\u00e1fky z lehk\u00fdck kov\u016f byly k dispozici jen za p\u0159\u00edplatek, dnes si m\u016f\u017eete vyb\u00edrat z cel\u00e9 \u0159ady r\u00e1fek. Pokud je chcete bezpe\u010dn\u011b dlouhodob\u011b pou\u017e\u00edvat, je dobr\u00e9 se o n\u011bj starat a d\u00e1vat pozor.<\/p>\n
D\u016fvod existence ocelov\u00e9ho r\u00e1fku z\u016fst\u00e1v\u00e1 je\u0161t\u011b po dlouhou dobu opodstatn\u011bna, proto\u017ee m\u00e1 vlastnosti, kter\u00e9 pat\u0159\u00ed mezi slabiny r\u00e1fk\u016f z lehk\u00fdck kov\u016f. Jeho nejv\u011bt\u0161\u00ed v\u00fdhoda nepochybn\u011b spo\u010d\u00edv\u00e1 v pru\u017enosti a trvanlivosti materi\u00e1lu, co je obzvl\u00e1\u0161t\u011b oce\u0148ov\u00e1no na \u0161patn\u00fdch a pra\u0161n\u00fdch silnic\u00edch.<\/p>\n
Ocelov\u00fd r\u00e1fek se snadno opravuje a je m\u00e9n\u011b vystaven pov\u011btrnostn\u00edm a environment\u00e1ln\u00edm rizik\u016fm. Z\u00e1rove\u0148 je k dispozici v omezen\u00e9m rozsahu velikost\u00ed a m\u016f\u017ee zvy\u0161ovat neodpru\u017eenou hmotnost vozu. Z tohoto hlediska, kdy\u017e chceme porovnat r\u00e1fky ocelov\u00e9 s r\u00e1fky zlehk\u00fdch kov\u016f, n\u00edzk\u00e1 neodpru\u017een\u00e1 hmotnost \u0161et\u0159\u00ed tlumi\u010d a dal\u0161\u00ed komponenty podvozk\u016f ve v\u011bt\u0161\u00ed m\u00ed\u0159e, co je d\u016fle\u017eit\u00e9 nejen p\u0159i j\u00edzd\u011b na zl\u00e9 silnici, ale ovliv\u0148uje tak\u00e9 \u0159\u00edzen\u00ed auta.<\/p>\n
R\u00e1fek zlehk\u00fdch kov\u016f je obecn\u00fd n\u00e1zev, kter\u00fd zahrnuje r\u00e1fky vyroben\u00e1 z hlin\u00edku a slitiny hlin\u00edku a nap\u0159\u00edklad ho\u0159\u010d\u00edku. Legovan\u00e9 r\u00e1fky jsou leh\u010d\u00ed, ne\u017e hlin\u00edkov\u00e9 a pokud je hlavn\u00edm c\u00edlem sn\u00ed\u017eit neodpru\u017eenou hmotnost, mo\u017en\u00e1 v\u00e1s p\u0159ekvap\u00ed, \u017ee hmotnost hlin\u00edkov\u00fdch r\u00e1fek m\u016f\u017ee dokonce p\u0159ev\u00fd\u0161it hmotnost ocelov\u00e9ho r\u00e1fku stejn\u00e9ho rozm\u011bru.<\/p>\n
Ze stejn\u00e9ho d\u016fvodu a trvanlivosti bysme m\u011bli zv\u00e1\u017eit n\u00e1kup kvalitn\u00edch r\u00e1fk\u016f, jako jsou nap\u0159. zna\u010dky Momo nebo Reds, proto\u017ee levn\u00e9, repasovan\u00e9 r\u00e1fky a r\u00e1fky pochybn\u00e9 kvality jsou z dlouhodob\u00e9ho hlediska dra\u017e\u0161\u00ed ne\u017e zna\u010dkov\u00e9, proto\u017ee tyto r\u00e1fky namontovan\u00e9 na nekvalitn\u00e1ch podvozovk\u00e1ch se mohou ohnout nebo zlomit, rychleji se po\u0161kozuj\u00ed. Tak\u017ee nestoj\u00ed za to kupovat r\u00e1fky n\u00edzk\u00e9 kvality ani v p\u0159\u00edpad\u011b men\u0161\u00edch vozidel, nestoj\u00ed za to riskovat. Hlin\u00edkov\u00e9 r\u00e1fky pou\u017e\u00edv\u00e1me \u010dast\u011bji pro letn\u00ed pneumatiky, zimn\u00ed pneumatiky jsou namonotv\u00e1ny na ocelov\u00fd r\u00e1fek. Je to dobr\u00e9 \u0159e\u0161en\u00ed pro ochranu vozidla, r\u00e1fk\u016f a pneumatik. V p\u0159\u00edpad\u011b, \u017ee r\u00e1fky zlehk\u00fdch kov\u016f nejsou zvl\u00e1\u0161t\u011b odoln\u00e1 v\u016f\u010di zim\u011b, zimn\u00ed pneumatiky by m\u011bly b\u00fdt namontovan\u00e9 na ocelov\u00fd r\u00e1fek, a pou\u017e\u00edv\u00e1ny pneumatiky s vy\u0161\u0161\u00edmi bo\u010dnicemi a s u\u017e\u0161\u00edm profilem, kter\u00e9 l\u00e9pe vyhovuj\u00ed sn\u011bhov\u00fdm podm\u00ednk\u00e1m. R\u00e1fky \u010dasto skladujeme neodborn\u011b, ale kdy\u017e je to mo\u017en\u00e9, skladujte je spolu s pneumatikami, aby kv\u016fli stohov\u00e1n\u00ed nedo\u0161lo k jednostrann\u00e9mu za\u0165a\u017een\u00fd.<\/p>\n
P\u0159i v\u00fdm\u011bn\u011b pneumatik na jaro-podzim \u2013 vedle v\u00fdm\u011bny mezi n\u00e1pravami kv\u016fli pevn\u00e9mu sm\u011bru ot\u00e1\u010den\u00ed – je samoz\u0159ejm\u00e9, \u017ee je t\u0159eba kola znovu centrovat, aby se odkryly skryt\u00e9 chyby, o nich\u017e si pr\u016fm\u011brn\u00fd \u0159idi\u010d nemus\u00ed b\u00fdt v\u011bdom. Pokud najedete do d\u00edry v silnici, se m\u016f\u017ee st\u00e1t, \u017ee krom\u011b viditeln\u00fdch po\u0161kozen\u00ed se i r\u00e1fky zdeformuj\u00ed, co\u017e m\u016f\u017ee zp\u016fsobit vibrace a zna\u010dn\u00e9 po\u0161kozen\u00ed. Pokud jsou r\u00e1fky n\u011bjak po\u0161kozeny, nap\u0159\u00edklad po st\u0159etnut\u00ed s v\u00fdmoly nebo po n\u00e1razu s chodn\u00edkem, nen\u00ed-li vid\u011bt zvenku po\u0161kozen\u00ed, vyplat\u00ed se prozkoumat r\u00e1fek po odstran\u011bn\u00ed pneu a pod\u00edvet se na p\u0159\u00edpadn\u00e9 fyzick\u00e9 po\u0161kozen\u00ed.<\/p>\n
D\u00e1le je u\u017eite\u010dn\u00e9 pravideln\u011b zkontrolovat r\u00e1fky pou\u017e\u00edvan\u00fdch i bez incidentu, proto\u017ee m\u016f\u017ee doj\u00edt k po\u0161kozen\u00ed nebo korozi v d\u016fsledku \u00fanavy materi\u00e1lu, kter\u00e9 z\u016fst\u00e1vaj\u00ed skryt\u00ed pod pneumatikou. Dal\u0161\u00edm argumentem pro v\u00fdhradn\u00ed pou\u017e\u00edv\u00e1n\u00ed hlin\u00edkov\u00fdch r\u00e1fek v l\u00e9t\u011b je to, \u017ee granule nebo trval\u011b ulo\u017een\u00fd s\u016fl pou\u017e\u00edvan\u00e9 pro zimn\u00ed post\u0159ikov\u00e1n\u00ed silnic m\u016f\u017ee tak\u00e9 zp\u016fsobit po\u0161kozen\u00ed. R\u00e1fky, kter\u00e9 nejsou speci\u00e1ln\u011b navr\u017eeny pro zimn\u00ed pou\u017eit\u00ed, se mohou po\u0161kodit, vytvo\u0159\u00ed se neviditeln\u00e9 praskliny, do prasklin pronik\u00e1 vlhkost a zmrazen\u00edm a rozmrazen\u00edm se mezery rozt\u00e1hnou, rozbije se povlak a korozivn\u00ed \u0161\u0165\u00e1va m\u016f\u017ee po\u0161kozit materi\u00e1l r\u00e1fku. Star\u00e9 r\u00e1fky jsou samoz\u0159ejm\u011b i esteticky nep\u011bkn\u00e9. Nen\u00ed tedy rozumn\u00e9 \u0161et\u0159it na kvalitn\u00edch r\u00e1fc\u00edch a v z\u00e1jmu dlouhodob\u00e9ho a bezprobl\u00e9mov\u00e9ho pou\u017e\u00edv\u00e1n\u00ed bysme se m\u011bli o n\u011b pravideln\u011b starat.<\/p>\n
P\u00e9\u010de o r\u00e1fek<\/p>\n
R\u00e1fky, zejm\u00e9na r\u00e1fky z lehk\u00fdch kov\u016f by m\u011bly b\u00fdt o\u0161et\u0159ov\u00e1ny nekorozivn\u00edm, speci\u00e1ln\u00edm \u010distic\u00edm prost\u0159edkem a neabrazivn\u00edm m\u011bkk\u00fdm \u0161t\u011btcem nebo had\u0159\u00edkem. Doporu\u010duje se pravideln\u00e9 \u010di\u0161t\u011bn\u00ed, proto\u017ee prach z brzdov\u00e9 desti\u010dky a roztaven\u00fd asfalt v l\u00e9t\u011b mohou trvale zm\u011bnit barvu povrchu r\u00e1fek. Pokud jsou va\u0161e hlin\u00edkov\u00e9 r\u00e1fky po\u0161kozeny, st\u00e1le existuje \u0161ance na opravu. Existuje n\u011bkolik specializovan\u00fdch d\u00edlen, kde tyto drobn\u00e9 kusy lze nahradit sva\u0159ov\u00e1n\u00edm, v\u00e1lcov\u00e1n\u00edm zaji\u0161\u0165uj\u00ed p\u016fvodn\u00ed rozlo\u017een\u00ed hmotnosti a obnoven\u00e9 kusy potom voskuj\u00ed, le\u0161t\u00ed a lakuj\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"
V minulosti r\u00e1fky z lehk\u00fdck kov\u016f byly k dispozici jen za p\u0159\u00edplatek, dnes si m\u016f\u017eete vyb\u00edrat z cel\u00e9 \u0159ady r\u00e1fek.<\/p>\n","protected":false},"author":1,"featured_media":123,"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":[],"class_list":["post-136","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technicky-poradce"],"_links":{"self":[{"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/posts\/136","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=136"}],"version-history":[{"count":1,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/posts\/136\/revisions"}],"predecessor-version":[{"id":137,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/posts\/136\/revisions\/137"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/media\/123"}],"wp:attachment":[{"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/media?parent=136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/categories?post=136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/1pneu.eu\/pneublog\/wp-json\/wp\/v2\/tags?post=136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}