{"id":2350,"date":"2005-10-15T17:50:41","date_gmt":"2005-10-15T17:50:41","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/"},"modified":"2012-07-11T13:56:23","modified_gmt":"2012-07-11T13:56:23","slug":"honda-crf250r-2-1","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/","title":{"rendered":"Honda CRF250R 2006 partie 2"},"content":{"rendered":"<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogmoto\/files\/2012\/07\/crf250_5.jpg\"><img loading=\"lazy\" decoding=\"async\" alt=\"Crf250_5\" src=\"http:\/\/www.leblogmoto.com\/images\/crf250_5.jpg\" width=\"250\" height=\"247\"  style=\"float: left;margin: 0px 5px 5px 0px\" \/><\/a><\/p>\n<p>Moteur et transmission :<br \/> &#8211; Le puissant monocylindre 4 temps 4 soupapes Unicam de 249 cm3 \u00e0 refroidissement liquide est con\u00e7u pour d\u00e9livrer sa puissance sur une large plage de r\u00e9gimes pour plus d&rsquo;efficacit\u00e9. Compact et l\u00e9ger, il ne ne p\u00e8se que 23,9 kg.<br \/> &#8211; Tr\u00e8s compact et l\u00e9ger, le syst\u00e8me de d\u00e9compression int\u00e9gr\u00e9 et le d\u00e9compresseur manuel au guidon facilitent les d\u00e9marrages, \u00e0 froid comme \u00e0 chaud.<br \/> &#8211; L\u2019 originale distribution Unicam permet de concilier la l\u00e9g\u00e8ret\u00e9 et la compacit\u00e9 d&rsquo;une commande \u00e0 simple arbre \u00e0 cames avec une forme optimale de la chambre de combustion pour une puissance maximale \u00e0 tous les r\u00e9gimes. Elle comprend aussi un simple arbre \u00e0 cames en acier c\u00e9ment\u00e9 qui commande directement les deux soupapes d&rsquo;admission de 31 mm en titane. La came centrale actionne les deux soupapes d&rsquo;\u00e9chappement de 26 mm en acier par l&rsquo;interm\u00e9diaire d&rsquo;un culbuteur forg\u00e9 \u00e0 rouleau qui limite les frottements.<br \/> &#8211; La l\u00e9g\u00e8ret\u00e9 des soupapes d&rsquo;admission en titane a permis d&rsquo;utiliser des ressorts plus petits, r\u00e9duisant ainsi la hauteur du moteur.<br \/> &#8211; Le vilebrequin est r\u00e9alis\u00e9 en acier haute r\u00e9sistance \u00e0 faible teneur en carbone avec des tourillons c\u00e9ment\u00e9s pour une fiabilit\u00e9 accrue \u00e0 hauts r\u00e9gimes.<br \/> &#8211; Le piston forg\u00e9 et les segments sont plus l\u00e9gers que des composants conventionnels, permettant des r\u00e9gimes plus \u00e9lev\u00e9s tout en garantissant un haut niveau d&rsquo;\u00e9tanch\u00e9it\u00e9 avec le cylindre, un taux de compression \u00e9lev\u00e9 de 12.9 : 1 et une forte puissance \u00e0 hauts r\u00e9gimes.<br \/> &#8211; La bielle \u00e0 double c\u00e9mentation est \u00e9quip\u00e9e d&rsquo;un roulement \u00e0 aiguille (t\u00eate de bielle) afin de concilier performances \u00e0 hauts r\u00e9gimes et fiabilit\u00e9.<br \/> &#8211; Le traitement de surface Nicasil appliqu\u00e9 au cylindre est l\u00e9ger et garantit un fonctionnement durable.<br \/> &#8211; Le capuchon de bougie est plac\u00e9 entre les bras du culbuteur d&rsquo;entra\u00eenement des soupapes d&rsquo;\u00e9chappement pour une culasse plus compacte.<br \/> &#8211; Le carburateur FCR de \u00f8 40 mm est \u00e9quip\u00e9 d&rsquo;un boisseau plat glissant sur 4 rouleaux. Il en r\u00e9sulte r\u00e9activit\u00e9 ainsi que grand confort d&rsquo;utilisation.<br \/> &#8211; Ce carburateur dispose d&rsquo;un capteur TPS (Throttle Position Sensor) qui aide \u00e0 obtenir un fonctionnement \u00e9quilibr\u00e9 sur toute la plage de r\u00e9gime.<\/p>\n<p> &#8211; Le syst\u00e8me de lubrification \u00e0 pompe double s\u00e9pare le lubrifiant destin\u00e9 au vilebrequin, au piston et \u00e0 la distribution et celui destin\u00e9 \u00e0 l&#8217;embrayage et la transmission. Cela permet de fournir \u00e0 l&#8217;embrayage une huile plus froide et supprime la contamination de l&#8217;embrayage et de la transmission par les r\u00e9sidus pr\u00e9sents dans l&rsquo;huile moteur. Le volume d&rsquo;huile en circulation ainsi que la taille de la pompe sont \u00e9galement r\u00e9duits.<br \/> &#8211; Les carters moteur \u00e0 plan de joint vertical comprennent le logement de pompe \u00e0 huile, r\u00e9duisant le poids par rapport \u00e0 une conception conventionnelle.<br \/> &#8211; Le balancier d&rsquo;\u00e9quilibrage entra\u00een\u00e9 par pignons limite les vibrations en m\u00eame temps qu&rsquo;il entra\u00eene la pompe \u00e0 eau.<br \/> &#8211; Les huit disques d&#8217;embrayage offrent une surface de contact suffisante pour transmettre le couple moteur tandis que les ressorts sont calibr\u00e9s de mani\u00e8re \u00e0 offrir une faible r\u00e9sistance au levier.<br \/> &#8211; La transmission dispose de 5 rapports.<br \/> &#8211; Les couvercles d&rsquo;alternateur, d&#8217;embrayage et le cache culbuteurs sont r\u00e9alis\u00e9s en magn\u00e9sium afin de r\u00e9duire le poids du moteur.<br \/> &#8211; Le double radiateur dispose d&rsquo;une surface d&rsquo;\u00e9change accrue par rapport \u00e0 des composants classiques, permettant une dissipation plus efficace de la chaleur.<\/p>\n<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogmoto\/files\/2012\/07\/crf250_2.jpg\"><img loading=\"lazy\" decoding=\"async\" alt=\"Crf250_2\" src=\"http:\/\/www.leblogmoto.com\/images\/crf250_2.jpg\" width=\"470\" height=\"313\"  style=\"float: left;margin: 0px 5px 5px 0px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Moteur et transmission : &#8211; Le puissant monocylindre 4 temps 4 soupapes Unicam de 249 cm3 \u00e0 refroidissement liquide est con\u00e7u pour d\u00e9livrer sa puissance sur une large plage de r\u00e9gimes pour plus d&rsquo;efficacit\u00e9. Compact et l\u00e9ger, il ne ne p\u00e8se que 23,9 kg. &#8211; Tr\u00e8s compact et l\u00e9ger, le syst\u00e8me de d\u00e9compression int\u00e9gr\u00e9 et [&hellip;]<\/p>\n","protected":false},"author":339,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,66],"tags":[],"class_list":["post-2350","post","type-post","status-publish","format-standard","hentry","category-honda","category-moto-cross"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Honda CRF250R 2006 partie 2 - leblogmoto.com<\/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:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Honda CRF250R 2006 partie 2 - leblogmoto.com\" \/>\n<meta name=\"twitter:description\" content=\"Moteur et transmission : &#8211; Le puissant monocylindre 4 temps 4 soupapes Unicam de 249 cm3 \u00e0 refroidissement liquide est con\u00e7u pour d\u00e9livrer sa puissance sur une large plage de r\u00e9gimes pour plus d&rsquo;efficacit\u00e9. Compact et l\u00e9ger, il ne ne p\u00e8se que 23,9 kg. &#8211; Tr\u00e8s compact et l\u00e9ger, le syst\u00e8me de d\u00e9compression int\u00e9gr\u00e9 et [&hellip;]\" \/>\n<meta name=\"twitter:image\" content=\"http:\/\/www.leblogmoto.com\/images\/crf250_5.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"daniel bour\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/\",\"url\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/\",\"name\":\"Honda CRF250R 2006 partie 2 - leblogmoto.com\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/#primaryimage\"},\"thumbnailUrl\":\"http:\/\/www.leblogmoto.com\/images\/crf250_5.jpg\",\"datePublished\":\"2005-10-15T17:50:41+00:00\",\"dateModified\":\"2012-07-11T13:56:23+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/#\/schema\/person\/112bf3448e55eeb119f6276bbf85b8e7\"},\"breadcrumb\":{\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/#primaryimage\",\"url\":\"http:\/\/www.leblogmoto.com\/images\/crf250_5.jpg\",\"contentUrl\":\"http:\/\/www.leblogmoto.com\/images\/crf250_5.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Honda CRF250R 2006 partie 2\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/#website\",\"url\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/\",\"name\":\"leblogmoto\",\"description\":\"Toute l&#039;actualit\u00e9 des 2 roues\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/#\/schema\/person\/112bf3448e55eeb119f6276bbf85b8e7\",\"name\":\"daniel bour\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g\",\"caption\":\"daniel bour\"},\"url\":\"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/author\/daniel-bour\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Honda CRF250R 2006 partie 2 - leblogmoto.com","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/15\/honda-crf250r-2-1\/","twitter_card":"summary_large_image","twitter_title":"Honda CRF250R 2006 partie 2 - leblogmoto.com","twitter_description":"Moteur et transmission : &#8211; Le puissant monocylindre 4 temps 4 soupapes Unicam de 249 cm3 \u00e0 refroidissement liquide est con\u00e7u pour d\u00e9livrer sa puissance sur une large plage de r\u00e9gimes pour plus d&rsquo;efficacit\u00e9. 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