{"id":2347,"date":"2005-10-16T13:22:48","date_gmt":"2005-10-16T13:22:48","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/16\/honda-trx450r-2-1\/"},"modified":"2012-07-11T13:56:48","modified_gmt":"2012-07-11T13:56:48","slug":"honda-trx450r-2-1","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogmoto\/2005\/10\/16\/honda-trx450r-2-1\/","title":{"rendered":"Honda TRX450R 2006 partie 2"},"content":{"rendered":"<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogmoto\/files\/2012\/07\/trx_3.jpg\"><img loading=\"lazy\" decoding=\"async\" alt=\"Trx_3\" src=\"http:\/\/www.leblogmoto.com\/images\/trx_3.jpg\" width=\"250\" height=\"187\"  style=\"float: left;margin: 0px 5px 5px 0px\" \/><\/a><\/p>\n<p>Sp\u00e9cifications moteur et transmission<br \/> &#8211; Le puissant monocylindre 4 temps 4 soupapes Unicam refroidi par eau est d\u00e9riv\u00e9 de  celui des fameuses CRF450R de motocross et CRF450X d\u2019Enduro,il est plus compacte et l\u00e9ger et enti\u00e8rement repens\u00e9 pour une utilisation quad.  <br \/> &#8211; L\u2019originale distribution Unicam permet de concilier la l\u00e9g\u00e8ret\u00e9 et la compacit\u00e9 pour une puissance maximale \u00e0 tous les r\u00e9gimes, elle comprend  un simple arbre \u00e0 cames en acier c\u00e9ment\u00e9 qui  commande directement deux soupapes d\u2019admission de 36 mm en acier. La came  centrale actionne deux soupapes d\u2019\u00e9chappement de 30 mm par l\u2019interm\u00e9diaire d\u2019un  culbuteur forg\u00e9 \u00e0 rouleau qui limite les frottements.<br \/> &#8211; La version \u00e0 d\u00e9marreur \u00e9lectrique dispose d\u2019un d\u00e9marreur qui entra\u00eene directement le  vilebrequin cot\u00e9 embrayage afin de b\u00e9n\u00e9ficier d\u2019une lubrification sup\u00e9rieure des  pignons tout en offrant un moteur plus \u00e9troit et un vilebrequin plus court et plus rigide.   <br \/> &#8211; La version \u00e0 kick fait appel \u00e0 un syst\u00e8me de type \u201cquad\u201d (kick invers\u00e9) pour des  d\u00e9marrages plus faciles et un poids r\u00e9duit.  <br \/> &#8211; Le syst\u00e8me de d\u00e9compression automatique facilite les d\u00e9marrages dans toutes les  conditions.  <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 couvre-culasse est en magn\u00e9sium afin de r\u00e9duire le poids non suspendu.<br \/> &#8211; Le piston forg\u00e9 \u00e0 3 segments est plus l\u00e9ger qu\u2019un piston conventionnel, offrant des  mont\u00e9es en r\u00e9gimes plus rapides pr\u00e9sente une jupe de seulement 28,4 mm de hauteur, il est plus l\u00e9ger qu\u2019un piston traditionnel, permettant de mont\u00e9es en  r\u00e9gimes plus rapides tout en permettant un haut niveau d\u2019\u00e9tanch\u00e9it\u00e9 avec le cylindre et  une puissance \u00e9lev\u00e9e \u00e0 hauts r\u00e9gimes. Le taux de compression est de 12 \u00e0 1. <\/p>\n<p>&#8211; La bielle \u00e0 double c\u00e9mentation est \u00e9quip\u00e9e d\u2019un roulement \u00e0 aiguille (t\u00eate de bielle)  afin de concilier performances \u00e0 hauts r\u00e9gimes et fiabilit\u00e9.  <br \/> &#8211; Le traitement de surface Nikasil \u00ae appliqu\u00e9 au cylindre est l\u00e9ger et garantit un  fonctionnement durable sans probl\u00e8me.  <br \/> &#8211; Le puit de bougie est plac\u00e9 entre les bras du culbuteur d\u2019entra\u00eenement des soupapes  d\u2019\u00e9chappement pour une culasse plus compacte. <br \/> &#8211; Le carburateur Keihin FCR de 40 mm dispose d\u2019un boisseau mont\u00e9 sur 4 roulements  et se montre facile \u00e0 man\u0153uvrer et progressif., il  dispose d\u2019un syst\u00e8me de capteur TPS qui aide \u00e0 obtenir des  performances constantes sur toute la plage de r\u00e9gime.   <br \/> &#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\u2019embrayage et la  transmission. Cela permet de fournir \u00e0 l\u2019embrayage une huile plus froide et supprime  la contamination de l\u2019embrayage et de la transmission par les r\u00e9sidus pr\u00e9sents dans  l\u2019huile moteur. Le volume d\u2019huile en circulation ainsi que la taille de la pompe sont  \u00e9galement r\u00e9duits. <br \/> &#8211; Les carters moteur \u00e0 plan de joint vertical int\u00e8grent la pompe \u00e0 huile, r\u00e9duisant le poids  par rapport \u00e0 une conception conventionnelle,  le roulement gauche du contre-arbre et celui du support d\u2019axe sont de type \u201cdouble \u201c  pour davantage de fiabilit\u00e9 et le syst\u00e8me d\u2019\u00e9chappement est r\u00e9alis\u00e9 en acier inoxydable ultral\u00e9ger.<br \/> &#8211; Le radiateur d\u2019huile est all\u00e9g\u00e9 et pr\u00e9sente un nouvel agencement de l\u2019ailettage pour  un refroidissement am\u00e9lior\u00e9 dans toutes les conditions.  <br \/> &#8211; Le ventilateur est fin, l\u00e9ger et tr\u00e8s efficace.<br \/> &#8211; Le contre-arbre entra\u00een\u00e9 par pignons r\u00e9duit les vibrations et commande la pompe \u00e0 eau.  Huit disques d\u2019embrayage offrent une surface de contact suffisante pour transmettre  l\u2019important couple moteur.  <br \/> &#8211; La robuste bo\u00eete \u00e0 5 rapports a \u00e9t\u00e9 enti\u00e8rement r\u00e9\u00e9tag\u00e9e pour une utilisation quad.  <\/p>\n<p><a href=\"http:\/\/blogs.thesocialmedia.com\/leblogmoto\/files\/2012\/07\/trx_1.jpg\"><img loading=\"lazy\" decoding=\"async\" alt=\"Trx_1\" src=\"http:\/\/www.leblogmoto.com\/images\/trx_1.jpg\" width=\"470\" height=\"232\"  style=\"float: left;margin: 0px 5px 5px 0px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sp\u00e9cifications moteur et transmission &#8211; Le puissant monocylindre 4 temps 4 soupapes Unicam refroidi par eau est d\u00e9riv\u00e9 de celui des fameuses CRF450R de motocross et CRF450X d\u2019Enduro,il est plus compacte et l\u00e9ger et enti\u00e8rement repens\u00e9 pour une utilisation quad. &#8211; L\u2019originale distribution Unicam permet de concilier la l\u00e9g\u00e8ret\u00e9 et la compacit\u00e9 pour une puissance [&hellip;]<\/p>\n","protected":false},"author":339,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,70],"tags":[],"class_list":["post-2347","post","type-post","status-publish","format-standard","hentry","category-honda","category-quad"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Honda TRX450R 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\/16\/honda-trx450r-2-1\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Honda TRX450R 2006 partie 2 - leblogmoto.com\" \/>\n<meta name=\"twitter:description\" content=\"Sp\u00e9cifications moteur et transmission &#8211; 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