{"id":348,"date":"2026-09-17T07:16:55","date_gmt":"2026-09-17T05:16:55","guid":{"rendered":"https:\/\/semqapps.com\/darkspeed\/lt\/pavaru-skaiciuokle"},"modified":"2026-09-17T07:30:02","modified_gmt":"2026-09-17T05:30:02","slug":"pavaru-skaiciuokle","status":"publish","type":"page","link":"https:\/\/semqapps.com\/darkspeed\/lt\/pavaru-skaiciuokle","title":{"rendered":"Dvira\u010dio pavar\u0173 skai\u010diuokl\u0117"},"content":{"rendered":"<p>Pasirinkite priekin\u0119 \u017evaig\u017edut\u0119, galin\u0119 \u017evaig\u017edut\u0119 ir padang\u0105, ir skai\u010diuokl\u0117 \u017eemiau pasakys apie t\u0105 pavar\u0105 tris dalykus: kaip greitai ji va\u017eiuoja esant tam tikram kadensui, kiek ji turi pavaros coli\u0173 ir kiek metr\u0173 jus i\u0161 tikr\u0173j\u0173 past\u016bm\u0117ja vienas \u0161vaistiklio apsisukimas. Viskas perskai\u010diuojama ra\u0161ant.<\/p>\n<div class=\"calc\" data-imperial=\"1\" data-unit=\"mph\" data-decimal=\".\">\n  <h2 class=\"calc-title\" id=\"darkspeed-calculator\"><a href=\"https:\/\/semqapps.com\/darkspeed\/bike-gear-ratio-calculator\">Cadence and gearing calculator<\/a><\/h2>\n  <p class=\"calc-lead\">Set your gear and your cadence, then read off the speed. Everything updates as you type.<\/p>\n\n  <div class=\"calc-grid\">\n    <label class=\"calc-field\">\n      <span class=\"calc-label\">Cadence<\/span>\n      <span class=\"calc-input\">\n        <input type=\"number\" id=\"calc-cadence\" value=\"90\" min=\"20\" max=\"200\" step=\"1\" inputmode=\"numeric\" \/>\n        <span class=\"calc-suffix\">rpm<\/span>\n      <\/span>\n    <\/label>\n\n    <label class=\"calc-field\">\n      <span class=\"calc-label\">Chainring<\/span>\n      <span class=\"calc-input\">\n        <input type=\"number\" id=\"calc-chainring\" value=\"50\" min=\"20\" max=\"60\" step=\"1\" inputmode=\"numeric\" \/>\n        <span class=\"calc-suffix\">T<\/span>\n      <\/span>\n    <\/label>\n\n    <label class=\"calc-field\">\n      <span class=\"calc-label\">Sprocket<\/span>\n      <span class=\"calc-input\">\n        <input type=\"number\" id=\"calc-cog\" value=\"17\" min=\"9\" max=\"52\" step=\"1\" inputmode=\"numeric\" \/>\n        <span class=\"calc-suffix\">T<\/span>\n      <\/span>\n    <\/label>\n\n    <label class=\"calc-field\">\n      <span class=\"calc-label\">Wheel and tire<\/span>\n      <span class=\"calc-input\">\n        <select id=\"calc-wheel\">\n                    <option value=\"700x23c\"\n                  data-circ=\"2099\"\n                  >700 \u00d7 23C<\/option>\n                    <option value=\"700x25c\"\n                  data-circ=\"2111\"\n                   selected='selected'>700 \u00d7 25C<\/option>\n                    <option value=\"700x28c\"\n                  data-circ=\"2130\"\n                  >700 \u00d7 28C<\/option>\n                    <option value=\"700x32c\"\n                  data-circ=\"2155\"\n                  >700 \u00d7 32C<\/option>\n                    <option value=\"700x38c\"\n                  data-circ=\"2193\"\n                  >700 \u00d7 38C<\/option>\n                    <option value=\"29x2.25\"\n                  data-circ=\"2312\"\n                  >29 \u00d7 2.25<\/option>\n                    <option value=\"650bx47\"\n                  data-circ=\"2130\"\n                  >650B \u00d7 47 (27.5 \u00d7 1.85)<\/option>\n                    <option value=\"27.5x2.1\"\n                  data-circ=\"2168\"\n                  >27.5 \u00d7 2.10<\/option>\n                    <option value=\"26x2.1\"\n                  data-circ=\"2089\"\n                  >26 \u00d7 2.10<\/option>\n                    <option value=\"20x1.75\"\n                  data-circ=\"1552\"\n                  >20 \u00d7 1.75<\/option>\n                  <\/select>\n      <\/span>\n    <\/label>\n  <\/div>\n\n  <p class=\"calc-result\">\n    <output id=\"calc-out\" for=\"calc-cadence calc-chainring calc-cog calc-wheel\">\n      <strong id=\"calc-speed\">20.8<\/strong>\n      <span class=\"calc-unit\">mph<\/span>\n    <\/output>\n  <\/p>\n\n  <ul class=\"calc-secondary\">\n    <li>\n      <span class=\"calc-sec-label\">Gear inches<\/span>\n      <span class=\"calc-sec-value\" id=\"calc-inches\">77.8<\/span>\n    <\/li>\n    <li>\n      <span class=\"calc-sec-label\">Distance per pedal turn<\/span>\n      <span class=\"calc-sec-value\"><span id=\"calc-dev\">6.2<\/span> m<\/span>\n    <\/li>\n    <li>\n      <span class=\"calc-sec-label\">Rolling circumference<\/span>\n      <span class=\"calc-sec-value\"><span id=\"calc-circ\">2111<\/span> mm<\/span>\n    <\/li>\n  <\/ul>\n\n  <h3 class=\"calc-table-title\">The same gear at other cadences<\/h3>\n  <div class=\"calc-table-wrap\">\n    <table class=\"calc-table\">\n      <thead>\n        <tr>\n          <th scope=\"col\">Cadence<\/th>\n          <th scope=\"col\">mph<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody id=\"calc-rows\">\n                <tr>\n          <td>60 rpm<\/td>\n          <td>13.9<\/td>\n        <\/tr>\n                <tr>\n          <td>70 rpm<\/td>\n          <td>16.2<\/td>\n        <\/tr>\n                <tr>\n          <td>80 rpm<\/td>\n          <td>18.5<\/td>\n        <\/tr>\n                <tr>\n          <td>90 rpm<\/td>\n          <td>20.8<\/td>\n        <\/tr>\n                <tr>\n          <td>100 rpm<\/td>\n          <td>23.1<\/td>\n        <\/tr>\n                <tr>\n          <td>110 rpm<\/td>\n          <td>25.5<\/td>\n        <\/tr>\n              <\/tbody>\n    <\/table>\n  <\/div>\n\n  <p class=\"calc-note\">The circumference is worked out from the ISO size printed on the tire wall: \u03c0 \u00d7 (rim diameter + twice the tire width). That runs about one percent above the tables built into bike computers, because a loaded tire is not a circle. For an exact figure, mark the valve, roll the bike forward one full turn with your weight on it, and measure the distance.<\/p>\n<\/div>\n<h2 id=\"kaip-veikia-skaiciavimas\">Kaip veikia skai\u010diavimas<\/h2>\n<p>Dviratis neturi pavar\u0173 d\u0117\u017e\u0117s automobiline prasme. Tai, k\u0105 kei\u010diate perjungdami pavar\u0105, yra dviej\u0173 dantrat\u0173 santykis, o visa kita i\u0161 jo plaukia aritmeti\u0161kai. N\u0117ra jokio pasl\u0117pto daugiklio ir niekas nedingsta: visa tai telpa vienoje eilut\u0117je.<\/p>\n<p>J\u016bs\u0173 pavara yra tiesiog priekin\u0117 \u017evaig\u017edut\u0117, padalyta i\u0161 galin\u0117s. Penkiasde\u0161imties dant\u0173 priekin\u0117 \u017evaig\u017edut\u0117 prie\u0161 septyniolikos dant\u0173 galin\u0119 duoda 2,94, o tai rei\u0161kia, kad galinis ratas apsisuka 2,94 karto kiekvienam \u0161vaistiklio apsisukimui. Padauginkite tai i\u0161 kelio, kur\u012f ratas nuva\u017eiuoja per vien\u0105 apsisukim\u0105, ir i\u0161 \u0161vaistiklio apsisukim\u0173 per minut\u0119, ir tur\u0117site savo greit\u012f.<\/p>\n<p><strong>greitis = kadensas \u00d7 (priekin\u0117 \u017evaig\u017edut\u0117 \u00f7 galin\u0117) \u00d7 ried\u0117jimo perimetras<\/strong><\/p>\n<p>Vienintelis dydis, kurio ant dvira\u010dio n\u0117ra u\u017era\u0161yta, yra paskutinis, ir j\u012f skai\u010diuokl\u0117 i\u0161veda u\u017e jus i\u0161 padangos dyd\u017eio.<\/p>\n<h2 id=\"pavaros-coliai-ir-kelias-per-svaistiklio-apsisukima\">Pavaros coliai ir kelias per \u0161vaistiklio apsisukim\u0105<\/h2>\n<p>Plikas santykis 2,94 pats savaime nieko nesako, nes ignoruoja rat\u0105. Tas pats santykis kaln\u0173 dviratyje su 26 coli\u0173 ratlankiais ir plento dviratyje su 700C duoda dvi pastebimai skirtingas pavaras. Tod\u0117l dviratininkai lygina pavaras vienetais, kuriuose ratas jau \u012fskai\u010diuotas.<\/p>\n<p>Pavaros coliai yra senesnis i\u0161 dviej\u0173: skersmuo, kurio reik\u0117t\u0173 tiesiogin\u0117s pavaros didra\u010diui, kad vienu pedalo paspaudimu nuried\u0117t\u0173 tiek pat toli. I\u0161 pirmo \u017evilgsnio muziejinis dalykas ir vis d\u0117lto tas skai\u010dius, kur\u012f visi mini, nes jis leid\u017eia tiesiogiai palyginti du dvira\u010dius su skirtingais ratais. Kelias per \u0161vaistiklio apsisukim\u0105 sako t\u0105 pat\u012f metrais ir yra lengviau \u012fsivaizduojamas: 78 coli\u0173 pavara past\u016bm\u0117ja jus ma\u017edaug 6,2 metro kiekvienu pilnu \u0161vaistiklio apsisukimu.<\/p>\n<h2 id=\"kaip-tiksliai-ismatuoti-riedejimo-perimetra\">Kaip tiksliai i\u0161matuoti ried\u0117jimo perimetr\u0105<\/h2>\n<p>Skai\u010diuokl\u0117 i\u0161veda perimetr\u0105 i\u0161 ant padangos \u0161ono \u012fspausto ISO dyd\u017eio: \u03c0 \u00d7 (ratlankio skersmuo + dvi padangos plo\u010dio dalys). Padanga 700 \u00d7 25C yra ISO 25-622, taigi \u03c0 \u00d7 (622 + 50) duoda 2111 mm. Tai skaidru ir patikrinama, ko negalima pasakyti apie daugumoje dvira\u010di\u0173 kompiuteri\u0173 \u012fmontuotas lenteles: jos skiriasi tarpusavyje ir nenurodo jokio \u0161altinio.<\/p>\n<p>Taip pat i\u0161eina ma\u017edaug procentu per daug, nes apkrauta padanga n\u0117ra apskritimas. Jei norite tikro skai\u010diaus, atlikite ried\u0117jimo matavim\u0105: pa\u017eym\u0117kite ventil\u012f apa\u010dioje, atsis\u0117skite ant dvira\u010dio, paried\u0117kite pirmyn, kol ventilis v\u0117l bus apa\u010dioje, ir i\u0161matuokite atstum\u0105 tarp dviej\u0173 \u017eymi\u0173. Pakartokite tris kartus ir suvidurkinkite. Tas vienas matavimas nugali bet kuri\u0105 lentel\u0119, ir tai taip pat skai\u010dius, kur\u012f verta \u012fvesti \u012f dvira\u010dio kompiuter\u012f, kad jo atstumai sutapt\u0173.<\/p>\n<h2 id=\"sesios-pavaros-suskaiciuotos\">\u0160e\u0161ios pavaros, suskai\u010diuotos<\/h2>\n<p>Visos \u0161e\u0161ios su padanga 700 \u00d7 25C, tai yra su 2111 mm perimetru. Grei\u010diai skai\u010diuoti esant 90 rpm, kadensui, kur\u012f dauguma i\u0161laiko lygumoje.<\/p>\n<table>\n<thead>\n<tr>\n<th>Pavara<\/th>\n<th>Kam skirta<\/th>\n<th>Pavaros coliai<\/th>\n<th>Kelias per \u0161vaistiklio apsisukim\u0105<\/th>\n<th>km\/h esant 90 rpm<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>34 \/ 28<\/td>\n<td>Status \u012fkalnis<\/td>\n<td>32,1<\/td>\n<td>2,6 m<\/td>\n<td>13,8<\/td>\n<\/tr>\n<tr>\n<td>34 \/ 21<\/td>\n<td>Banguotas reljefas<\/td>\n<td>42,8<\/td>\n<td>3,4 m<\/td>\n<td>18,5<\/td>\n<\/tr>\n<tr>\n<td>50 \/ 17<\/td>\n<td>Va\u017eiavimas lygumoje<\/td>\n<td>77,8<\/td>\n<td>6,2 m<\/td>\n<td>33,5<\/td>\n<\/tr>\n<tr>\n<td>50 \/ 14<\/td>\n<td>Greitas grupinis va\u017eiavimas<\/td>\n<td>94,5<\/td>\n<td>7,5 m<\/td>\n<td>40,7<\/td>\n<\/tr>\n<tr>\n<td>50 \/ 11<\/td>\n<td>Sprintas<\/td>\n<td>120,2<\/td>\n<td>9,6 m<\/td>\n<td>51,8<\/td>\n<\/tr>\n<tr>\n<td>42 \/ 16<\/td>\n<td>Tipi\u0161kas vienos pavaros<\/td>\n<td>69,4<\/td>\n<td>5,5 m<\/td>\n<td>29,9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"koks-kadensas-prie-kokios-pavaros\">Koks kadensas prie kokios pavaros<\/h2>\n<p>Skai\u010diuokl\u0117 mielai pasakys, kad 50 \u00d7 11 esant 110 rpm yra 63 km\/h. Ji nepasakys, kad to beveik niekas nei\u0161laiko, ir b\u016btent \u010dia pavar\u0173 skai\u010diuokl\u0117s nebepakanka. Tai, koki\u0105 pavar\u0105 paj\u0117gsite sukti, riboja turima galia, o kadensas lemia, ar ta galia ateina i\u0161 raumen\u0173 j\u0117gos, ar i\u0161 \u0161irdies ir plau\u010di\u0173.<\/p>\n<p>Trumpai: daugumai naudingas ruo\u017eas yra nuo 70 iki 100 rpm, o tinkama pavara yra ta, kuri i\u0161laiko jus jame tame reljefe, kuriuo va\u017eiuojate. Jei \u012fkaln\u0117je atsiduriate \u017eemiau 70 rpm, atsakymas yra lengvesn\u0117 pavara, o ne didesn\u0117s pastangos. <a href=\"https:\/\/semqapps.com\/darkspeed\/lt\/kadensas-dviratis\">Kadenso vadovas<\/a> aptaria \u0161iuos ruo\u017eus, tai, k\u0105 tyrimai i\u0161 tikr\u0173j\u0173 i\u0161matavo, ir tris treniruotes jiems i\u0161pl\u0117sti.<\/p>\n<h2 id=\"daznai-uzduodami-klausimai\">Da\u017enai u\u017eduodami klausimai<\/h2>\n<p><strong>Kokia pavara tinka plento dvira\u010diui?<\/strong> Bendram va\u017eiavimui 50\/34 \u0161vaistikliai su 11-32 kasete padengia beveik visk\u0105: apa\u010dioje apie 28 colius sta\u010dioms \u012fkaln\u0117ms ir vir\u0161uje apie 120 nuokaln\u0117ms.<\/p>\n<p><strong>Kas yra pavaros coliai?<\/strong> Rato skersmuo, kurio reik\u0117t\u0173 tiesiogin\u0117s pavaros dvira\u010diui, kad vienu pedalo paspaudimu nuva\u017eiuot\u0173 tok\u012f pat\u012f atstum\u0105. B\u016bdas palyginti pavaras tarp dvira\u010di\u0173 su skirtingo dyd\u017eio ratais.<\/p>\n<p><strong>Kaip apskai\u010diuoti greit\u012f i\u0161 kadenso ir pavaros?<\/strong> Padauginkite kadens\u0105 i\u0161 pavaros santykio ir i\u0161 ried\u0117jimo perimetro. Esant 90 rpm su 50\/17 ir 2111 mm ratu gaunasi 33,5 km\/h.<\/p>\n<p><strong>Ar padangos plotis kei\u010dia mano pavar\u0105?<\/strong> Ne\u017eymiai. Per\u0117jimas nuo 25 mm prie 32 mm prideda apie 44 mm perimetro, o tai ma\u017edaug dviem procentais didesnis greitis esant tam pa\u010diam kadensui ir tai pa\u010diai pavarai.<\/p>\n<p><strong>Kok\u012f perimetr\u0105 \u012fvesti \u012f dvira\u010dio kompiuter\u012f?<\/strong> T\u0105, kur\u012f i\u0161matuosite riedindami dvirat\u012f su savo svoriu. Lenteli\u0173 reik\u0161m\u0117s paprastai b\u016bna procentu optimisti\u0161kos, o tai 40 km kelyje sudaro apie 400 metr\u0173.<\/p>\n<p><strong>Ar didesn\u0117 pavara visada greitesn\u0117?<\/strong> Tik jei vis dar paj\u0117giate j\u0105 sukti protingu kadensu. Pavara, kuri\u0105 malate esant 55 rpm, ilgainiui duoda ma\u017eiau galios nei lengvesn\u0117, sukama 90.<\/p>\n<p><strong>Kokio kadenso siekti?<\/strong> Daugumai geriausiai tinka nuo 70 iki 100 rpm, o apie 90 rpm yra da\u017eniausiai minima atskaitos reik\u0161m\u0117.<\/p>\n<aside class=\"ds-cta ds-cta--band\" id=\"get\"\t       data-cta-tag=\"page\"\n\t       aria-labelledby=\"ds-cta-1\">\n\t\t<h2 class=\"ds-cta-title\" id=\"ds-cta-1\">\n\t\t\tMount it. Ride it. <span class=\"text-cyan\">Read it at a glance.<\/span>\t\t<\/h2>\n\t\t\t\t<p class=\"ds-cta-lead\">DarkSpeed is a focused, distraction-free bike speedometer for iOS and Android.<\/p>\n\t\t\t\t    <div class=\"store-buttons\" data-placement=\"article_page\">\n      <a class=\"store-btn store-btn--apple\" href=\"https:\/\/apps.apple.com\/us\/app\/darkspeed-bike-speedometer\/id6780020629?pt=129025072&#038;ct=darkspeed_www&#038;mt=8\">\n        <svg class=\"store-icon\" viewBox=\"0 0 24 24\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M17.564 12.625c-.022-2.244 1.832-3.318 1.916-3.371-1.044-1.526-2.667-1.735-3.245-1.76-1.382-.14-2.694.812-3.395.812-.7 0-1.78-.79-2.926-.768-1.506.022-2.894.874-3.668 2.22-1.564 2.71-.4 6.722 1.124 8.927.745 1.08 1.633 2.293 2.799 2.25 1.124-.046 1.55-.726 2.91-.726 1.36 0 1.742.726 2.93.703 1.21-.022 1.976-1.1 2.717-2.184.856-1.252 1.21-2.466 1.232-2.528-.027-.012-2.367-.91-2.394-3.575zm-2.225-6.575c.62-.752 1.04-1.798.926-2.844-.896.036-1.984.595-2.625 1.346-.575.666-1.078 1.733-.943 2.756 1 .078 2.022-.508 2.642-1.258z\"\/><\/svg>\n        <span>\n          <small>Download on the<\/small>\n          <strong>App Store<\/strong>\n        <\/span>\n      <\/a>\n      <a class=\"store-btn store-btn--google\" href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.darkspeed.app&#038;referrer=utm_source%3Dsemqapps.com%26utm_medium%3Dreferral%26utm_campaign%3Ddarkspeed_www%26utm_content%3Den%26utm_term%3Dpage\">\n        <svg class=\"store-icon\" viewBox=\"0 0 24 24\" aria-hidden=\"true\">\n          <path fill=\"#34A853\" d=\"M3 20.5V3.5c0-.4.1-.7.3-1l10 10-10 10c-.2-.3-.3-.6-.3-1z\"\/>\n          <path fill=\"#FBBC04\" d=\"M16.8 12L20.4 9.9c.8.5 1.3 1.2 1.3 2.1s-.5 1.6-1.3 2.1L16.8 12z\"\/>\n          <path fill=\"#EA4335\" d=\"M13.3 12.5l3.5 3.5-12 6.7c-.5.3-1 .2-1.5-.2l10-10z\"\/>\n          <path fill=\"#4285F4\" d=\"M13.3 11.5L3.3 1.5c.5-.4 1-.5 1.5-.2l12 6.7-3.5 3.5z\"\/>\n        <\/svg>\n        <span>\n          <small>GET IT ON<\/small>\n          <strong>Google Play<\/strong>\n        <\/span>\n      <\/a>\n    <\/div>\n    \t<\/aside>\n","protected":false},"excerpt":{"rendered":"<p>Apskai\u010diuokite greit\u012f, pavaros colius ir keli\u0105 per \u0161vaistiklio apsisukim\u0105 i\u0161 \u017evaig\u017edu\u010di\u0173 ir padangos. \u0160e\u0161ios \u012fprastos pavaros ir tikslus rato matavimas.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":71,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-348","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/semqapps.com\/darkspeed\/wp-json\/wp\/v2\/pages\/348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/semqapps.com\/darkspeed\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/semqapps.com\/darkspeed\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/semqapps.com\/darkspeed\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/semqapps.com\/darkspeed\/wp-json\/wp\/v2\/comments?post=348"}],"version-history":[{"count":1,"href":"https:\/\/semqapps.com\/darkspeed\/wp-json\/wp\/v2\/pages\/348\/revisions"}],"predecessor-version":[{"id":402,"href":"https:\/\/semqapps.com\/darkspeed\/wp-json\/wp\/v2\/pages\/348\/revisions\/402"}],"up":[{"embeddable":true,"href":"https:\/\/semqapps.com\/darkspeed\/wp-json\/wp\/v2\/pages\/71"}],"wp:attachment":[{"href":"https:\/\/semqapps.com\/darkspeed\/wp-json\/wp\/v2\/media?parent=348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}