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M\u00e9n\u011b je n\u011bkdy v\u00edce. Proto se n\u00e1m l\u00edb\u00ed lehk\u00e1 a jednoduch\u00e1 sportovn\u00ed auta. Jedn\u00edm z nich je \u010desk\u00e1 Sigma WR postaven\u00e1 na trubkov\u00e9m r\u00e1mu s celkovou hmotnost\u00ed m\u00e9n\u011b ne\u017e 600 kg. Nen\u00ed to jen p\u0159erostl\u00e1 motok\u00e1ra, ale skute\u010dn\u011b plnohodnotn\u00e9 sportovn\u00ed n\u00e1\u010din\u00ed na z\u00e1vodn\u00ed okruh i okresky!<\/p>\n
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Trackdays, sportovn\u00ed je\u017ed\u011bn\u00ed, hobby z\u00e1vody a nejr\u016fzn\u011bj\u0161\u00ed motoristick\u00e9 akce jsou st\u00e1le \u010dast\u011bj\u0161\u00ed z\u00e1bavou. \u017dijeme zkr\u00e1tka v zemi nad\u0161en\u00fdch \u0159idi\u010d\u016f, kte\u0159\u00ed se neboj\u00ed utr\u00e1cet velk\u00e9 pen\u00edze za sportovn\u00ed auta a je\u017ed\u011bn\u00ed s nimi. Skv\u011bl\u00fdm p\u0159\u00edkladem jsou nap\u0159\u00edklad sportovn\u00ed modely GR Yaris nebo Subaru BRZ, kter\u00fdch se u n\u00e1s s ohledem na po\u010det obyvatel prodalo v\u00fdrazn\u011b v\u00edce ne\u017e v jin\u00fdch st\u00e1tech EU. Podobn\u011b jsou na tom i dra\u017e\u0161\u00ed auta, jako je nap\u0159\u00edklad Porsche GT3 nebo GT4. To je doslova hork\u00e9 zbo\u017e\u00ed, na kter\u00e9m vyd\u011bl\u00e1vaj\u00ed velk\u00e9 pen\u00edze nejr\u016fzn\u011bj\u0161\u00ed p\u0159ekupn\u00edci. Z\u00e1jem i chu\u0165 jezdit a u\u010dit se \u0159\u00eddit je tedy velik\u00e1 a u n\u00e1s v corners.cz z toho m\u00e1me skute\u010dn\u011b radost!<\/p>\n
V \u010cesk\u00e9 republice ale nem\u00e1me jen spousty nad\u0161en\u00fdch \u0159idi\u010d\u016f a celou \u0159adu zaj\u00edmav\u00fdch motoristick\u00fdch akc\u00ed! Skv\u011bl\u00e1 sportovn\u00ed auta se u n\u00e1s dokonce p\u0159\u00edmo vyv\u00edjej\u00ed a vyr\u00e1b\u011bj\u00ed. Jedn\u00edm z t\u011bch nejzaj\u00edmav\u011bj\u0161\u00edch, a hlavn\u011b nejfunk\u010dn\u011bj\u0161\u00edch je Sigma WR od Sigma Motor. Ta vznik\u00e1 v mal\u00fdch s\u00e9ri\u00edch ru\u010dn\u00ed v\u00fdrobou v P\u0159erov\u011b. Je\u0161t\u011b ne\u017e se dostanete k tomu, jak Sigma WR jezd\u00ed a pro\u010d se n\u00e1m l\u00edb\u00ed, objasn\u00edme trochu historie a fakt\u016f.<\/p>\n
Za cel\u00fdm projektem stoj\u00ed v prvn\u00ed \u0159ad\u011b Martin Straka, kter\u00fd snil o vlastn\u00edm sportovn\u00edm aut\u011b u\u017e od d\u011btstv\u00ed. Nesnil ale o tom, \u017ee si jednou n\u011bjak\u00e9 koup\u00ed. On v\u011b\u0159il, \u017ee si jednou s\u00e1m n\u011bjak\u00e9 postav\u00ed. \u201eTento sen jsem m\u011bl od chv\u00edle, kdy jsem se dozv\u011bd\u011bl, \u017ee Porsche se jmenuje podle Ferdinanda Porsche, Ferrari podle Enza Ferrariho. V\u017edycky jsem miloval auta a cht\u011bl jsem je i vym\u00fd\u0161let,\u201c \u0159\u00edk\u00e1 Martin.<\/p>\n
Martin vystudoval Fakultu strojn\u00edho in\u017een\u00fdrstv\u00ed VUT a obor Automobiln\u00ed a dopravn\u00ed in\u017een\u00fdrstv\u00ed. \u201eVUT mi dalo skv\u011bl\u00fd z\u00e1klad do profesn\u00ed kari\u00e9ry a tyto z\u00e1klady vyu\u017e\u00edv\u00e1m denn\u011b. \u0160kola v\u00e1m uk\u00e1\u017ee sm\u011br. Mus\u00edte ale tak\u00e9 neust\u00e1le pracovat, zdokonalovat se, d\u011blat chyby a u\u010dit se z nich,\u201c mysl\u00ed si Martin, jeho\u017e specializac\u00ed jsou podvozky. \u201eNa \u00dastavu automobiln\u00edho a dopravn\u00edho in\u017een\u00fdrstv\u00ed FSI jsem se s celou problematikou mohl sezn\u00e1mit do v\u011bt\u0161\u00ed hloubky. Dodnes jsou podvozky moje srdcov\u00e1 z\u00e1le\u017eitost,\u201c podot\u00fdk\u00e1 Martin, kter\u00fd dnes s\u00e1m n\u011bkolik absolvent\u016f VUT zam\u011bstn\u00e1v\u00e1.<\/p>\n
Pokro\u010d\u00edme k samotn\u00e9 firm\u011b Sigma Motor, kter\u00e1 se d\u011bl\u00ed na dv\u011b divize \u2013 Sigma Cars a Sigma Engineering. Zat\u00edmco divize Engineering nab\u00edz\u00ed znalosti a zku\u0161enosti odborn\u00edk\u016f v oblasti konstruov\u00e1n\u00ed, prototypov\u00e1n\u00ed \u010di optimalizace softwaru pro v\u00fdpo\u010det mechanism\u016f, Sigma Cars vyv\u00edj\u00ed a vyr\u00e1b\u00ed vlastn\u00ed automobily. \u201eV\u00fdvoj a stavba vlastn\u00edho sportovn\u00edho vozidla jsou velmi \u010dasov\u011b a finan\u010dn\u011b n\u00e1ro\u010dn\u00e9. Mus\u00edme si proto na to n\u011bkde vyd\u011blat. Hlavn\u00edm byznysem firmy Sigma Motor jsou proto in\u017een\u00fdrsk\u00e9 slu\u017eby v oblasti v\u00fdvoje produkt\u016f, konstrukce p\u0159\u00edpravk\u016f a jedno\u00fa\u010delov\u00fdch stroj\u016f pro v\u00fdrobu. Dod\u00e1v\u00e1me konstruk\u010dn\u00ed slu\u017eby a mnohdy i prototypy \u010di malos\u00e9riovou v\u00fdrobu. Jedn\u00e1 se o projekty od oblasti automotive p\u0159es komponenty pro leteck\u00fd nebo vlakov\u00fd pr\u016fmysl po st\u0159eln\u00e9 zbran\u011b. Hodn\u011b m\u011b bav\u00ed, kdy\u017e se inspirujeme \u0159e\u0161en\u00edm z jednoho odv\u011btv\u00ed a vhodn\u011b ho pou\u017eijeme v \u00fapln\u011b jin\u00e9m oboru,\u201c \u0159\u00edk\u00e1 Martin. Mezi hlavn\u00ed z\u00e1kazn\u00edky Sigmy pat\u0159\u00ed firmy jako \u0160koda Auto, IDEA AIR, Bobcat \u010di ON Semiconductor.<\/p>\n
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Samotn\u00fd v\u00fdvoj, testov\u00e1n\u00ed, a hlavn\u011b homologace pro silni\u010dn\u00ed provoz obn\u00e1\u0161el skute\u010dn\u011b n\u00e1ro\u010dnou cestu.<\/p>\n
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Teorie zn\u00ed tedy docela slibn\u011b ne? Mo\u017en\u00e1 m\u00e1te ale po\u0159\u00e1d p\u0159edsudky a \u0159\u00edk\u00e1te si, \u017ee tato v\u011bc nem\u016f\u017ee jezdit nijak extra dob\u0159e a bude to maxim\u00e1ln\u011b jen p\u0159erostl\u00e1 motok\u00e1ra. Popravd\u011b m\u011bli jsme tak\u00e9 trochu hloup\u00e9 p\u0159edsudky a nahl\u00ed\u017eeli na cel\u00fd projekt s rezervou. Byla to v\u0161ak chyba, proto\u017ee cel\u00fd t\u00fdm ze Sigmy bere nejen samotn\u00e9 auto, ale v\u0161e s n\u00edm spojen\u00e9 velmi v\u00e1\u017en\u011b a zodpov\u011bdn\u011b. Hlavn\u011b skute\u010dn\u011b miluj\u00ed auta, rozum\u00ed jim a maj\u00ed smysl pro detail. Pr\u00e1v\u011b smysl pro detail je prvn\u00ed, \u010deho si na Sigm\u011b v\u0161imnete je\u0161t\u011b p\u0159ed samotn\u00fdm nastartov\u00e1n\u00edm motoru. Promy\u0161len\u00e1 je pozice za volantem, ergonomie ovl\u00e1dac\u00edch prvk\u016f, vtipn\u011b a velmi funk\u010dn\u011b jsou vy\u0159e\u0161en\u00e9 p\u0159ep\u00edna\u010de blinkr\u016f a sv\u011btel na volantu, senza\u010dn\u011b p\u0159ehledn\u00fd je p\u0159\u00edstrojov\u00fd \u0161t\u00edt s n\u011bkolika mo\u017enostmi nastaven\u00ed layoutu a m\u011b osobn\u011b pot\u011b\u0161ily \u00fapln\u00e9 drobnosti, jako jsou zahlazen\u00e9 sv\u00e1ry trubkov\u00e9ho r\u00e1mu nebo precizn\u011b zpracovan\u00fd v\u011btrn\u00fd \u0161t\u00edt kokpitu.<\/p>\n
To v\u0161echno jsou ale detaily, kter\u00e9 vid\u00edme v hotov\u00e9m aut\u011b. Samotn\u00fd v\u00fdvoj, testov\u00e1n\u00ed, a hlavn\u011b homologace pro silni\u010dn\u00ed provoz obn\u00e1\u0161el skute\u010dn\u011b n\u00e1ro\u010dnou cestu. Tv\u016frci vozidla Martin Straka a Honza Hrud\u00edk m\u011bli jasnou p\u0159edstavu, co by m\u011bla Sigma spl\u0148ovat, jak m\u00e1 b\u00fdt zkonstruov\u00e1na a s jak\u00fdmi parametry. Jedn\u00edm z kl\u00ed\u010dov\u00fdch parametr\u016f bylo rozlo\u017een\u00ed hmotnosti mezi n\u00e1pravy (40 % p\u0159edn\u00ed a 60 % zadn\u00ed), um\u00edst\u011bn\u00ed pozice \u0159idi\u010de a spolujezdce co nejbl\u00ed\u017ee k t\u011b\u017ei\u0161ti auta. Stejn\u011b bylo kl\u00ed\u010dov\u00e9 um\u00edst\u011bn\u00ed n\u00e1dr\u017ee, aby mno\u017estv\u00ed paliva co nejm\u00e9n\u011b ovliv\u0148ovalo j\u00edzdn\u00ed vlastnosti a bylo srovnateln\u00e9 pro pr\u00e1zdnou a plnou n\u00e1dr\u017e.<\/p>\n
Nem\u00e9n\u011b d\u016fle\u017eit\u00e9 t\u00e9ma byla ergonomie a prostornost interi\u00e9ru. Po zku\u0161enostech z jin\u00fdch konkuren\u010dn\u00edch lightweight aut byl velk\u00fd d\u016fraz kladen na dostate\u010dn\u00fd prostor pro dv\u011b urostl\u00e9 osoby, zejm\u00e9na v oblasti ramen. D\u00e1le, z pohledu ergonomie, je samoz\u0159ejmost\u00ed, \u017ee seda\u010dka \u0159idi\u010de a sloupek \u0159\u00edzen\u00ed v\u010detn\u011b volantu jsou na milimetr p\u0159esn\u011b v jedn\u00e9 p\u0159\u00edmce, nen\u00ed zde tedy \u017e\u00e1dn\u00e9 vyosen\u00ed. Podle slov v\u00fdvojov\u00e9ho t\u00fdmu bylo velkou v\u00fdzvou dodr\u017een\u00ed legislativn\u00edch emisn\u00edch po\u017eadavk\u016f Euro 6 a schv\u00e1len\u00ed pro provoz na pozemn\u00edch komunikac\u00edch, co\u017e se povedlo bez v\u00fdjimek.<\/p>\n
Jedn\u00edm z velk\u00fdch t\u00e9mat Sigmy p\u0159i jej\u00edm n\u00e1kupu je ur\u010dit\u011b design. Za n\u00e1s vypad\u00e1 WR velmi dob\u0159e z profilu, zezadu, a hlavn\u011b v interi\u00e9ru. Trochu nudn\u011b p\u016fsob\u00ed p\u0159edn\u00ed \u010d\u00e1st a m\u0159\u00ed\u017eka chladi\u010de. Ka\u017edop\u00e1dn\u011b jsme fanou\u0161ky minimalistick\u00e9ho proveden\u00ed bez voliteln\u00e9ho aeropaketu. Tedy alespo\u0148 pokud se bav\u00edme o aut\u011b prim\u00e1rn\u011b pro silni\u010dn\u00ed pou\u017eit\u00ed. Ka\u017edop\u00e1dn\u011b design samotn\u00fd nen\u00ed v\u011bc, kter\u00e1 hraje velkou roli. U Sigmy jde v prvn\u00ed \u0159ad\u011b o j\u00edzdn\u00ed vlastnosti, emoce a \u0159idi\u010dsk\u00e9 z\u00e1\u017eitky. Tak\u017ee jak toto auto jezd\u00ed?<\/p>\n
Na\u0161e prvn\u00ed zku\u0161enost se Sigmou WR byla na mal\u00e9m z\u00e1vodn\u00edm okruhu v Sosnov\u00e9. Trati, kter\u00e1 je technicky velmi n\u00e1ro\u010dn\u00e1 a dokonale prov\u011b\u0159\u00ed obratnost podvozku, kalibraci \u0159\u00edzen\u00ed, reakce motoru a trakci, pop\u0159\u00edpad\u011b nastaven\u00ed samosvorn\u00e9ho diferenci\u00e1lu, pokud j\u00edm je auto vybaveno. Hned po prvn\u00edch kolech bylo jasn\u00e9, \u017ee tato tra\u0165 Sigm\u011b dokonale sedne. Kompaktn\u00ed rozm\u011bry v kombinaci s n\u00edzkou hmotnost\u00ed jsou toti\u017e v Sosnov\u00e9 velk\u00fdm bonusem(https:\/\/www.youtube.com\/watch?v=hDaeuPSzQ1o). Such\u00e1 hmotnost Sigmy WR je pouh\u00fdch 595 kg, co\u017e je zhruba polovina Toyoty GR86 s podobn\u011b v\u00fdkonn\u00fdm motorem. Pom\u011brem hmotnosti a v\u00fdkonu se tedy Sigma WR bl\u00ed\u017e\u00ed sp\u00ed\u0161e stroj\u016fm, jako je Porsche GT3.<\/p>\n
Akcelerace je tedy intenzivn\u00ed, ale p\u0159edv\u00eddateln\u00e1 a relativn\u011b plynul\u00e1, p\u0159esto\u017ee byl pou\u017eit turbodmychadlem p\u0159epl\u0148ovan\u00fd motor o objemu 1598 cm3. V Sigm\u011b nepodlehli touze po nejvy\u0161\u0161\u00edm v\u00fdkonu a sp\u00ed\u0161e jeho plynul\u00e9mu n\u00e1stupu a ovladatelnosti, \u010deho\u017e si opravdu cen\u00edme. V\u00fdsledn\u00fdch 225 kon\u00ed a 300 Nm to\u010div\u00e9ho momentu je dostupn\u00fdch v docela \u0161irok\u00e9m spektru ot\u00e1\u010dek. Jasn\u011b, dole je c\u00edtit, jak se motor nafukuje a po p\u0159ekro\u010den\u00ed hranice dvou tis\u00edc ot\u00e1\u010dek vyst\u0159el\u00ed s v\u011bt\u0161\u00ed razanc\u00ed. Nen\u00ed to v\u0161ak nic z\u00e1ke\u0159n\u00e9ho a po n\u011bkolika ujet\u00fdch kilometrech p\u0159esn\u011b v\u00edte, co od motoru v jak\u00fdch ot\u00e1\u010dk\u00e1ch \u010dekat. Tento motor ze spole\u010dn\u00e9ho v\u00fdvoje PSA a BMW si dob\u0159e pamatujeme z Peugeotu RCZ, 208 GTI, a hlavn\u011b MINI Cooper S a JCW generace R56. Popravd\u011b v Sigm\u011b je trochu utlumen\u00fd a postr\u00e1d\u00e1 emoce, kter\u00e9 si pamatujeme ze zm\u00edn\u011bn\u00fdch aut. Chyb\u00ed n\u00e1m nad\u0161en\u00ed ve vysok\u00fdch ot\u00e1\u010dk\u00e1ch a trochu emotivn\u011bj\u0161\u00ed zvuk s\u00e1n\u00ed a v\u00fdfuku. Samotn\u00fd v\u00fdfuk se pochopiteln\u011b d\u00e1 \u0159e\u0161it a Sigma nab\u00edz\u00ed hlasit\u011bj\u0161\u00ed tlumi\u010d pro okruhov\u00e9 verze WR. Na\u0161e testovan\u00e1 silni\u010dn\u00ed verze v\u0161ak mus\u00ed spl\u0148ovat p\u0159\u00edsn\u00e9 emisn\u00ed normy a limity. U\u017e jen skute\u010dnost, \u017ee toto malos\u00e9riov\u00e9 auto splnilo v\u0161echny normy a p\u0159edpisy, je za n\u00e1s skoro z\u00e1zrak.<\/p>\n
Sou\u010d\u00e1st\u00ed motoru od PSA je i \u0161estistup\u0148ov\u00e1 manu\u00e1ln\u00ed p\u0159evodovka. Ta nikdy nebyla silnou str\u00e1nkou francouzsk\u00e9 automobilky. Dobr\u00fd manu\u00e1l m\u011bla snad jen star\u00e1 205 GTI. Jen\u017ee t\u00fdmu v Sigm\u011b se povedl skoro z\u00e1zrak. Pomoc\u00ed velmi dob\u0159e nalad\u011bn\u00e9ho p\u0159ep\u00e1kov\u00e1n\u00ed vznikl z t\u00e9to p\u0159evodovky n\u00e1stroj, kter\u00fd je nejen z\u00e1bavn\u00fd, ale i docela p\u0159esn\u00fd a rychl\u00fd. Prodlou\u017een\u00e1 p\u00e1ka \u0159azen\u00ed je nav\u00edc hezky bl\u00edzko volantu. Ergonomicky poveden\u00e9 jsou tak\u00e9 ped\u00e1ly. Ty jsou stejn\u011b jako v z\u00e1vodn\u00edch autech um\u00edst\u011bn\u00e9 v podlaze a jsou hezky v jedn\u00e9 rovin\u011b. Plynov\u00fd ped\u00e1l tedy nen\u00ed zapu\u0161t\u011bn\u00fd v\u016f\u010di brzdov\u00e9mu, podobn\u011b jako ve v\u011bt\u0161in\u011b b\u011b\u017en\u00fdch silni\u010dn\u00edch aut. Pod\u0159azov\u00e1n\u00ed s meziplynem je tedy primitivn\u011b jednoduch\u00e9 a ve spojen\u00ed s mechanicky p\u0159esnou p\u0159evodovkou i velmi z\u00e1bavn\u00e9. Sta\u010d\u00ed jen m\u00edt nastavenou spr\u00e1vnou vzd\u00e1lenost ped\u00e1l\u016f. V Sigm\u011b se toti\u017e jako ve spr\u00e1vn\u00e9m z\u00e1vodn\u00edm aut\u011b neposouv\u00e1 sedadlo \u0159idi\u010de, ale cel\u00fd ped\u00e1lov\u00fd box. Fantastick\u00e1 je samotn\u00e1 kalibrace ped\u00e1l\u016f. Chod je jednotn\u00fd a pom\u011brn\u011b tuh\u00fd, jeliko\u017e brzdy nemaj\u00ed posilova\u010d ani ABS.<\/p>\n
Sigma WR vlastn\u011b nem\u00e1 \u017e\u00e1dn\u00e9 elektronick\u00e9 pomocn\u00edky. Nejsou toti\u017e v\u016fbec pot\u0159eba. D\u00edky n\u00edzk\u00e9 hmotnosti a velmi masivn\u00edmu mechanick\u00e9mu gripu na such\u00e9m asfaltu rozhodn\u011b nebudete m\u00edt pocit, \u017ee probrzd\u00edte pneumatiky nebo v\u00e1m zadn\u00ed \u010d\u00e1st auta ne\u010dekan\u011b odjede ze stopy pod pln\u00fdm plynem. Naopak k jak\u00e9koliv ztr\u00e1t\u011b trakce p\u0159edn\u00edch nebo zadn\u00edch pneumatik vy\u017eaduje Sigma WR velk\u00e9 vyprovokov\u00e1n\u00ed. To dokonce i na jinak velmi uklouzan\u00e9m asfaltu z\u00e1vodn\u00edho okruhu v Sosnov\u00e9. Jakmile si po p\u00e1r kolech zvyknete na ovl\u00e1d\u00e1n\u00ed a chov\u00e1n\u00ed auta, za\u010dnete v\u00edce a v\u00edce tla\u010dit. Kdy\u017e u\u017e si budete myslet, \u017ee Sigmu WR fakt tla\u010d\u00edte na limit, dost mo\u017en\u00e1 tomu tak nebude. Limity podvozku a p\u0159ilnavosti pneumatik jsou toti\u017e hodn\u011b daleko od toho, co si v\u011bt\u0161ina \u0159idi\u010d\u016f troufne. P\u0159ekonat p\u0159ilnavost zadn\u00edch pneumatik chce hodn\u011b pr\u00e1ce s p\u0159enosy hmotnosti auta a skute\u010dn\u011b plyn na podlaze i p\u0159es vysok\u00fd v\u00fdkon motoru. Sigma WR m\u00e1 toti\u017e dost mal\u00fd rozvor a velk\u00fd rozchod kol. Zkr\u00e1tka je kr\u00e1tk\u00e1, \u0161irok\u00e1 a d\u00edky n\u00edzk\u00e9 hmotnosti m\u00e1 nalad\u011bn\u00fd podvozek hodn\u011b m\u011bkce, ani\u017e by se otravn\u011b nakl\u00e1n\u011bl. To znamen\u00e1, \u017ee m\u00e1 neust\u00e1le enormn\u00ed p\u0159ilnavost a kontakt s povrchem pod koly.<\/p>\n
Pokud tedy n\u011bco p\u0159ep\u00e1l\u00edte, tak sp\u00ed\u0161 n\u00e1jezdovou nebo pr\u016fjezdnou rychlost v zat\u00e1\u010dce. To se m\u016f\u017ee projevit jemnou nedot\u00e1\u010divost\u00ed. Nen\u00ed to v\u0161ak nedot\u00e1\u010divost, kterou zn\u00e1te z b\u011b\u017en\u00fdch plechov\u00fdch sportovn\u00edch aut. Sigma WR jen t\u011b\u017eko pojede po \u010dum\u00e1ku rovn\u011b ven, kdy\u017e to pokaz\u00edte. Nedot\u00e1\u010divost se projev\u00ed jen jemn\u00fdm odch\u00fdlen\u00edm ze stopy a men\u0161\u00ed ochotou jet za volantem. V\u0161echny tyto v\u00fdhody a vlastnosti pramen\u00ed z ji\u017e n\u011bkolikr\u00e1t zm\u00edn\u011bn\u00e9 n\u00edzk\u00e9 hmotnosti, jemn\u00e9ho nalad\u011bn\u00ed podvozku a tak\u00e9 extr\u00e9mn\u00ed pevnosti trubkov\u00e9ho r\u00e1mu. To je dal\u0161\u00ed z\u00e1sadn\u00ed rozd\u00edl proti b\u011b\u017en\u00fdm sportovn\u00edm aut\u016fm, kter\u00e9 se v zat\u00e1\u010dk\u00e1ch a na nerovnostech krout\u00ed, vibruj\u00ed a poskakuj\u00ed, proto\u017ee se tlumi\u010de nemaj\u00ed do \u010deho op\u0159\u00edt.<\/p>\n
Nejhez\u010d\u00ed na tom cel\u00e9m je pocit, \u017ee Sigmu WR ani p\u0159i opravdu ostr\u00e9m tempu neni\u010d\u00edte. Pneumatiky se nep\u0159eh\u0159\u00edvaj\u00ed a brzdy maj\u00ed konstantn\u00ed v\u00fdkon i projev. Jedin\u00e9, co je nutn\u00e9 kontrolovat, je teplota motorov\u00e9ho oleje. N\u00edzk\u00e1 hmotnost a nalad\u011bn\u00ed auta nen\u00ed jen o vytrvalosti teplotn\u00ed, ale i fyzick\u00e9. Brzdov\u00e9 komponenty, pneumatiky ani spot\u0159eba benz\u00ednu rozhodn\u011b neodpov\u00eddaj\u00ed klasick\u00fdm sportovn\u00edm aut\u016fm. Jednodu\u0161e \u0159e\u010deno je asi t\u0159etinov\u00e1. Nehled\u011b na n\u00edzkou po\u0159izovac\u00ed cenu komponent, kter\u00e9 jsou pom\u011brn\u011b skromn\u00e9. Sigma WR standardn\u011b obouv\u00e1 pneumatiky Yokohama Advan 195\/55 R15 vp\u0159edu a 205\/55 R16 vzadu.<\/p>\n
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Z b\u011b\u017en\u00fdch sportovn\u00edch aut se z\u00e1\u017eitek za volantem asi nejv\u00edce podob\u00e1 Alf\u011b Romeo 4C Spyder.<\/strong><\/p>\n [\/et_pb_text][\/et_pb_column][et_pb_column type=“1_2″ _builder_version=“4.16″ global_colors_info=“{}“][\/et_pb_column][\/et_pb_row][et_pb_row custom_padding_last_edited=“on|phone“ _builder_version=“4.16″ width_tablet=““ width_phone=“90%“ width_last_edited=“on|phone“ custom_margin=“||3%||false|false“ custom_padding=“||||false|true“ custom_padding_tablet=“|3%||3%|false|true“ custom_padding_phone=““ global_colors_info=“{}“][et_pb_column type=“4_4″ _builder_version=“4.16″ global_colors_info=“{}“][et_pb_text _builder_version=“4.25.2″ text_font=“Montseratt Regular|300|||||||“ text_text_color=“#000000″ text_font_size=“17px“ text_line_height=“1.8em“ header_2_font=“OswaldFinal|700||on|||||“ header_2_font_size_tablet=““ header_2_font_size_phone=“27px“ header_2_font_size_last_edited=“on|phone“ header_2_line_height_tablet=““ header_2_line_height_phone=“1.4em“ header_2_line_height_last_edited=“on|phone“ locked=“off“ global_colors_info=“{}“]<\/p>\n No a jak\u00fd je tedy \u0159idi\u010dsk\u00fd pocit z j\u00edzdy v Sosnov\u00e9? Sigma nejde p\u0159irovnat k motok\u00e1\u0159e. M\u00e1 toti\u017e na rozd\u00edl od motok\u00e1ry, kter\u00e1 tlum\u00ed jen trubkov\u00fdm r\u00e1mem propracovan\u00fd a velmi sofistikovan\u00fd podvozek s obrovsk\u00fdmi mo\u017enostmi individu\u00e1ln\u00edho nastaven\u00ed. Z\u00e1vodn\u00ed motok\u00e1ra je nav\u00edc divok\u00e1, zb\u011bsil\u00e1 a docela n\u00e1ro\u010dn\u00e1 na \u0159\u00edzen\u00ed. Naopak Sigma WR je p\u0159edv\u00eddateln\u00e9 a hodn\u00e9 auto, kter\u00e9 v\u00e1m dovol\u00ed postupn\u011b zrychlovat, ani\u017e by p\u016fsobila nebezpe\u010dn\u011b. Z b\u011b\u017en\u00fdch sportovn\u00edch aut se z\u00e1\u017eitek za volantem asi nejv\u00edce podob\u00e1 Alf\u011b Romeo 4C Spyder. Tak\u00e9 lehk\u00e1 konstrukce, p\u0159epl\u0148ovan\u00fd motor ulo\u017een\u00fd uprost\u0159ed, pohon zadn\u00edch kol a \u017e\u00e1dn\u00fd posilova\u010d \u0159\u00edzen\u00ed ani brzd. No, jen\u017ee 4C m\u011bla tragickou automatickou p\u0159evodovku a chyb\u011bl j\u00ed samosvorn\u00fd diferenci\u00e1l. P\u0159esto\u017ee to bylo senza\u010dn\u00ed \u0159idi\u010dsk\u00e9 auto, nebyla rozhodn\u011b dokonal\u00e1 a ovl\u00e1d\u00e1n\u00ed bylo hodn\u011b n\u00e1ro\u010dn\u00e9. Sigma WR je p\u0159\u00edstupn\u011bj\u0161\u00ed, ovladateln\u011bj\u0161\u00ed a v mnoha ohledech l\u00e9pe slad\u011bn\u00e1. Jen nen\u00ed tak emotivn\u00ed, jako n\u00e1dhern\u00e1 a divok\u00e1 Alfa Romeo.<\/p>\n Co se n\u00e1m na Sigm\u011b l\u00edb\u00ed, je fakt, \u017ee j\u00edzda je skute\u010dn\u00fd motorsport. Po n\u011bkolika kolech vylezete z auta unaven\u00ed fyzicky i ment\u00e1ln\u011b. Jednak Sigma generuje docela slu\u0161n\u00e9 p\u0159et\u00ed\u017een\u00ed v zat\u00e1\u010dk\u00e1ch na brzd\u00e1ch i p\u0159i akceleraci, ale tak\u00e9 v\u00e1m ned\u00e1 nic zadarmo ovl\u00e1d\u00e1n\u00ed bez posilova\u010d\u016f. No a pro\u010d ment\u00e1ln\u011b? Zkr\u00e1tka mus\u00edte b\u00fdt po\u0159\u00e1d ve st\u0159ehu a hledat dokonalou j\u00edzdn\u00ed stopu a posledn\u00ed centimetry vyu\u017eit\u00ed trati pro co nejefektivn\u011bj\u0161\u00ed pr\u016fjezdy a je \u00fapln\u011b jedno, jestli \u010distou stopou nebo p\u0159et\u00e1\u010div\u00fdm smykem. Zkr\u00e1tka m\u00e1te obrovskou motivaci jet dokonale p\u0159esn\u011b, proto\u017ee Sigma k tomu doslova vyb\u00edz\u00ed.<\/p>\n Ano, Sigma um\u00ed jezdit i z\u00e1bavn\u00fdm p\u0159et\u00e1\u010div\u00fdm smykem a nejsou to jen levn\u00e9 powerslide pod plynem. Se Sigmou se d\u00e1 velmi dob\u0159e pracovat na brzd\u00e1ch a vyu\u017e\u00edt tak motor ulo\u017een\u00fd vzadu pro p\u0159et\u00e1\u010div\u00fd n\u00e1jezd do zat\u00e1\u010dky. Je to trochu podobn\u00fd styl jako s Porsche Cayman, jen pot\u0159ebujete mnohem odv\u00e1\u017en\u011bj\u0161\u00ed n\u00e1jezdov\u00e9 rychlosti a brut\u00e1ln\u011b rychl\u00e9 reakce na volantu. Mechanick\u00fd grip Sigmy na semi-slick pneumatik\u00e1ch Nankag AR-1 byl p\u0159i testov\u00e1n\u00ed na z\u00e1vodn\u00edm okruhu v Sosnov\u00e9 skute\u010dn\u011b masivn\u00ed. O to v\u011bt\u0161\u00ed odm\u011bnou bylo dostat se za limit p\u0159ilnavosti a jet skute\u010dn\u011b na hran\u011b schopnost\u00ed tohoto speci\u00e1ln\u00edho stroje. Popravd\u011b moc by n\u00e1s zaj\u00edmalo, jak by se Sigma v Sosnov\u00e9 chovala na m\u00e9n\u011b p\u0159ilnav\u00fdch pneumatik\u00e1ch nebo na mokru. D\u00edky samosvorn\u00e9ho diferenci\u00e1lu Torsen mezi zadn\u00edmi koly a bezprost\u0159edn\u00edm reakc\u00edm by to mohla b\u00fdt nejen skv\u011bl\u00e1 z\u00e1bava, ale tak\u00e9 zaj\u00edmav\u00fd tr\u00e9nink.<\/p>\n Jen\u017ee z\u00e1vodn\u00ed okruh je jedna v\u011bc. Naladit auto na pom\u011brn\u011b hladk\u00fd asfalt bez v\u00fdrazn\u00fdch ter\u00e9nn\u00edch nerovnost\u00ed nen\u00ed zase tak n\u00e1ro\u010dn\u00e9. Skute\u010dn\u00e9 kvality nastaven\u00ed auta, a hlavn\u011b podvozku v\u017edy odhal\u00ed okresky. Vzali jsme proto Sigmu na na\u0161e obl\u00edben\u00e9 silnice na Berounsku a v brdsk\u00fdch les\u00edch. Na tuto proj\u00ed\u017e\u010fku jsme od Sigma Motor dostali auto v trochu jin\u00e9 a m\u00e9n\u011b radik\u00e1ln\u00ed specifikaci. Na rozd\u00edl od testovac\u00edho kousku v Sosnov\u00e9 v\u0161ak \u0161lo o \u010derstv\u011b zajet\u00e9 auto s n\u00e1jezdem necel\u00fdch tis\u00edc kilometr\u016f, podvozkem s vy\u0161\u0161\u00ed sv\u011btlou v\u00fd\u0161kou, okreskov\u00fdm nastaven\u00edm tlumi\u010d\u016f a pneumatikami Yokohama AD052. Tedy ide\u00e1ln\u00ed kombo na zm\u00edn\u011bn\u00e9 cesty, kter\u00e9 kombinuj\u00ed dokonale hladk\u00fd nov\u00fd asfalt s n\u00e1ro\u010dn\u00fdmi \u00faseky pln\u00fdmi nejr\u016fzn\u011bj\u0161\u00edch n\u00e1strah. Skv\u011bl\u00fdm bonusem bylo n\u011bkolik de\u0161t\u011bm zpest\u0159en\u00fdch kilometr\u016f, tak\u017ee jsme Sigmu WR vyzkou\u0161eli i v mokr\u00e9m re\u017eimu.<\/p>\n Prvn\u00ed, \u010deho si p\u0159i j\u00edzd\u011b po ve\u0159ejn\u00fdch silnic\u00edch v\u0161imnete, je pocit zranitelnosti. Sed\u00edte extr\u00e9mn\u011b bl\u00edzko k silnici, a dokonce i Mazda MX-5 ve vedlej\u0161\u00edm pruhu na semaforech vypad\u00e1 jako zbyte\u010dn\u011b vysok\u00e9 auto. Jen\u017ee m\u00e1 to i sv\u00e9 v\u00fdhody. Tou prvn\u00ed je rychlost. Sigma WR v\u00e1s nebude provokovat k j\u00edzd\u011b nesmysln\u011b vysok\u00fdmi rychlostmi jako n\u011bkter\u00e1 jin\u00e1 sportovn\u00ed auta. Druh\u00fdm bonusem je, \u017ee j\u00edzdou ni\u017e\u0161\u00edmi rychlostmi o nic nep\u0159ijdete. Sigma WR je z\u00e1bavn\u00e1 v jak\u00e9mkoliv j\u00edzdn\u00edm re\u017eimu i rychlosti. V tom vn\u00edm\u00e1me jednu z hlavn\u00edch siln\u00fdch str\u00e1nek p\u0159i j\u00edzd\u011b po okresk\u00e1ch. Nen\u00ed pot\u0159eba jet pln\u00fd plyn a pln\u00e1 brzda, aby j\u00edzda byla z\u00e1bavn\u00e1, emotivn\u00ed a zaj\u00edmav\u00e1. Sta\u010d\u00ed jen spr\u00e1vn\u011b trefovat zat\u00e1\u010dky, precizn\u011b s\u00e1zet meziplyny a ve spr\u00e1vn\u00fd okam\u017eik p\u0159id\u00e1vat plyn a na limitu trakce zadn\u00edch pneumatik zrychlovat ze zat\u00e1\u010dek. Jednodu\u0161e \u0159e\u010deno uspokojen\u00ed se dostav\u00ed u\u017e ze samotn\u00e9ho napojen\u00ed \u0159idi\u010de na techniku, co\u017e se n\u00e1m moc l\u00edb\u00ed.<\/p>\n Neznamen\u00e1 to v\u0161ak, \u017ee Sigma WR nedok\u00e1\u017ee b\u00fdt rychl\u00e1 na ve\u0159ejn\u00fdch silnic\u00edch. Naopak dok\u00e1\u017ee b\u00fdt sprost\u011b rychl\u00e1 a v\u00e1m to za volantem ani nep\u0159ijde, proto\u017ee akcelerace je tak plynul\u00e1 a samoz\u0159ejm\u00e1, \u017ee skute\u010dnou rychlost si uv\u011bdom\u00edte a\u017e p\u0159i pohledu na digit\u00e1ln\u00ed p\u0159\u00edstrojov\u00fd \u0161t\u00edt. Sta\u010d\u00ed se p\u0159itom pohybovat ve st\u0159edn\u00edm p\u00e1smu ot\u00e1\u010dkom\u011bru a Sigma WR d\u00edky extr\u00e9mn\u011b n\u00edzk\u00e9 hmotnosti nen\u00e1padn\u011b nab\u00edr\u00e1 tempo. Podobn\u011b maskuje rychlost tak\u00e9 na brzd\u00e1ch, kter\u00e9 auto zpomaluj\u00ed op\u011bt d\u00edky n\u00edzk\u00e9 hmotnosti za polovi\u010dn\u00ed \u010das ne\u017e b\u011b\u017en\u00e1 auta, ani\u017e byste ma\u010dkali brzdov\u00fd ped\u00e1l p\u0159\u00edli\u0161 intenzivn\u011b. Neuv\u011b\u0159iteln\u00e1 je tak\u00e9 samoz\u0159ejmost, s jakou Sigma tlum\u00ed v\u0161echny nerovnosti. Rozhodn\u011b si trasu pro v\u00fdlet nemus\u00edte vyb\u00edrat podle kvality asfaltu! Tvrd\u00e9 r\u00e1zy do karoserie nebo odskakov\u00e1n\u00ed v Sigm\u011b rozhodn\u011b neza\u017eijete ani na tom nejn\u00e1ro\u010dn\u011bj\u0161\u00edm povrchu. To je obrovsk\u00fd pocit svobody ve srovn\u00e1n\u00ed s n\u011bkter\u00fdmi jin\u00fdmi sportovn\u00edmi auty.<\/p>\n Jen\u017ee probl\u00e9m je, \u017ee s rychlost\u00ed roste chu\u0165 po v\u011bt\u0161\u00edm dobrodru\u017estv\u00ed a z\u00e1bav\u011b, ale tak\u00e9 riziku. Je toti\u017e dobr\u00e9 m\u00edt neust\u00e1le na mysli, \u017ee pokud se pohybujeme na ve\u0159ejn\u00fdch silnic\u00edch a v b\u011b\u017en\u00e9m provozu, je jak\u00e9koliv v\u00fdrazn\u00e9 p\u0159ekro\u010den\u00ed rychlostn\u00edch limit\u016f bl\u00edzko pr\u016fseru. Hlavn\u011b pokud se bav\u00edme o j\u00edzd\u011b v aut\u011b bez jak\u00fdchkoliv asistent\u016f. M\u011bjte proto na pam\u011bti v jak\u00e9mkoliv podobn\u00e9m stroji, \u017ee sta\u010d\u00ed trochu \u0161t\u011brku, bl\u00e1ta nebo kalu\u017e a m\u016f\u017eete m\u00edt pln\u00e9 ruce pr\u00e1ce! Podobn\u011b jako p\u0159i j\u00edzd\u011b na limitu p\u0159ilnavosti v Sosnov\u00e9 pot\u0159ebujete na okresce, hlavn\u011b kdy\u017e zapr\u0161\u00ed, zatracen\u011b rychl\u00e9 ruce. Mus\u00edte reagovat okam\u017eit\u011b, chladnokrevn\u011b a dokonale p\u0159esn\u011b. Nen\u00ed to jako chyt\u00e1n\u00ed p\u0159et\u00e1\u010divosti v Toyot\u011b GR86, kde m\u00e1te na v\u0161e spoustu \u010dasu. V Sigm\u011b WR mus\u00edte b\u00fdt neust\u00e1le 100% ve st\u0159ehu a soust\u0159ed\u011bn\u00fd, ale pr\u00e1v\u011b to n\u00e1s zatracen\u011b bav\u00ed. Nen\u00ed to toti\u017e t\u00edm, \u017ee by byla Sigma z\u00e1ke\u0159n\u00e1 nebo \u0161patn\u011b ovladateln\u00e1. Je zkr\u00e1tka ostr\u00e1 a bezprost\u0159edn\u00ed. O to v\u00edce si v\u00e1\u017e\u00edme, \u017ee v dne\u0161n\u00ed dob\u011b vznikaj\u00ed tyto skute\u010dn\u00e9 \u0159idi\u010dsk\u00e9 stroje. Nav\u00edc v dob\u011b, kdy maj\u00ed dokonce i nejv\u011bt\u0161\u00ed sv\u011btov\u00e9 automobilky obrovsk\u00e9 probl\u00e9my uv\u00e9st na trh nov\u00fd \u0159idi\u010dsky zaj\u00edmav\u00fd model.<\/p>\n Motor<\/strong>: p\u0159epl\u0148ovan\u00fd \u0159adov\u00fd 4v\u00e1lec s hlin\u00edkov\u00fdm blokem [\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=“1_2,1_2″ _builder_version=“4.21.0″ _module_preset=“default“ custom_margin=“0px||||false|false“ custom_padding=“0px||||false|false“ locked=“off“ global_colors_info=“{}“][et_pb_column type=“1_2″ _builder_version=“4.21.0″ _module_preset=“default“ global_colors_info=“{}“][et_pb_blurb use_icon=“on“ font_icon=“P||divi||400″ icon_color=“#13775B“ icon_placement=“left“ _builder_version=“4.25.2″ _module_preset=“default“ body_font=“|600|||||||“ body_text_color=“#1A1F24″ body_font_size=“18px“ global_colors_info=“{}“]<\/p>\n [\/et_pb_blurb][\/et_pb_column][et_pb_column type=“1_2″ _builder_version=“4.21.0″ _module_preset=“default“ global_colors_info=“{}“][et_pb_blurb use_icon=“on“ font_icon=“O||divi||400″ icon_color=“#CE2026″ icon_placement=“left“ _builder_version=“4.25.2″ _module_preset=“default“ body_font=“|600|||||||“ body_text_color=“#1A1F24″ body_font_size=“18px“ global_colors_info=“{}“]<\/p>\n [\/et_pb_blurb][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=“1″ _builder_version=“4.16″ custom_margin=“0px||0px||true|false“ custom_padding=“0px||||false|false“ global_colors_info=“{}“][et_pb_row _builder_version=“4.23.1″ _module_preset=“default“ global_colors_info=“{}“][et_pb_column type=“4_4″ _builder_version=“4.23.1″ _module_preset=“default“ global_colors_info=“{}“][et_pb_video src=“https:\/\/www.youtube.com\/watch?v=e-hd6fxmOn8″ _builder_version=“4.25.2″ _module_preset=“default“ global_colors_info=“{}“][\/et_pb_video][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":" M\u00e9n\u011b je n\u011bkdy v\u00edce. Proto se n\u00e1m l\u00edb\u00ed lehk\u00e1 a jednoduch\u00e1 sportovn\u00ed auta. Jedn\u00edm z nich je \u010desk\u00e1 Sigma WR postaven\u00e1 na trubkov\u00e9m r\u00e1mu s celkovou hmotnost\u00ed m\u00e9n\u011b ne\u017e 600 kg. Nen\u00ed to jen p\u0159erostl\u00e1 motok\u00e1ra, ale skute\u010dn\u011b plnohodnotn\u00e9 sportovn\u00ed n\u00e1\u010din\u00ed na z\u00e1vodn\u00ed okruh i okresky!Trackdays, sportovn\u00ed je\u017ed\u011bn\u00ed, hobby z\u00e1vody a nejr\u016fzn\u011bj\u0161\u00ed motoristick\u00e9 akce jsou […]<\/p>\n","protected":false},"author":1,"featured_media":987505243,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"2880","footnotes":""},"categories":[30],"tags":[],"class_list":["post-987505242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recenze"],"yoast_head":"\nHodn\u011b z\u00e1bavn\u00fd workout!<\/h2>\n
Je Sigma pou\u017eiteln\u00e1 na okresce?<\/h2>\n
Technick\u00e9 parametry<\/h2>\n
Objem<\/strong>: 1 598 cm3
V\u00fdkon<\/strong>: 225 hp
To\u010div\u00fd moment<\/strong>: 300 Nm
P\u0159evodovka<\/strong>: \u0161estistup\u0148ov\u00e1 manu\u00e1ln\u00ed s p\u0159\u00edm\u00fdm \u0159azen\u00edm
Diferenci\u00e1l<\/strong>: samosvorn\u00fd diferenci\u00e1l Torsen
Pom\u011br v\u00fdkon\/hmotnost<\/strong>: 0,38 hp\/kg
Rozlo\u017een\u00ed hmotnosti<\/strong>: 40:60
Such\u00e1 hmotnost<\/strong>: 595 kg
Orienta\u010dn\u00ed pohotovostn\u00ed hmotnost<\/strong>: 704 kg
N\u00e1dr\u017e<\/strong>: 40 l
Maxim\u00e1ln\u00ed rychlost<\/strong>: 230 km\/h
Zrychlen\u00ed 0 na 100 km\/<\/strong>h: 3,9 s
Automotodrom Brno<\/strong>: 2:15.67 (T. Enge)<\/em>
Autodrom Most<\/strong>: 1:45.8 (T. Enge)<\/em><\/p>\n<\/ul>\n
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