{"id":4080,"date":"2013-05-07T17:17:51","date_gmt":"2013-05-07T15:17:51","guid":{"rendered":"http:\/\/blogs.km77.com\/engendromecanico\/?p=4080"},"modified":"2021-03-31T20:03:48","modified_gmt":"2021-03-31T18:03:48","slug":"opel-astra-opc-frenos-suspensiones-y-otros-detalles","status":"publish","type":"post","link":"https:\/\/www.km77.com\/revista\/engendro-mecanico\/opel-astra-opc-frenos-suspensiones-y-otros-detalles\/","title":{"rendered":"Opel Astra OPC. Frenos, suspensiones y otros detalles"},"content":{"rendered":"<p>Algunas de las cosas que distinguen a los coches deportivos son -adem\u00e1s de la potencia de su motor- los frenos, la suspensi\u00f3n y las ruedas. Son en gran medida los responsables de las reacciones en curva.<br \/>\nLa semana que me toc\u00f3 probar el Opel Astra OPC (<a href=\"https:\/\/www.km77.com\/00\/opel\/astra\/opc\/2012\/opel-astra-opc-precios.asp\" target=\"_blank\" rel=\"noopener\">prueba en km77.com<\/a>) decid\u00ed que podr\u00eda ser buena idea ense\u00f1ar estos elementos. Con m\u00e1s raz\u00f3n a\u00fan despu\u00e9s de comprobar que apenas hay im\u00e1genes oficiales de detalles t\u00e9cnicos y tambi\u00e9n porque las soluciones que emplea este coche no son del todo convencionales, ni en el eje delantero, ni en el trasero.<br \/>\nComo en otros Astra con carrocer\u00eda de tres puertas (GTC), el Astra OPC tiene una suspensi\u00f3n delantera McPherson de pivote desacoplado o de pivote independiente. Es una alternativa al McPherson tradicional que en ocasiones se encuentra en las versiones m\u00e1s potentes y radicales de algunos coches de tracci\u00f3n delantera.<br \/>\nOpel la denomina \u00abHiperStruts\u00bb. Lo que se busca con ella es que el eje sobre el que pivotan las ruedas delanteras est\u00e9 cerca de su punto de apoyo.\u00a0 A menor distancia, menor efecto palanca y por lo tanto habr\u00e1 menos interferencias en la direcci\u00f3n ante esfuerzos de aceleraci\u00f3n o frenada.<br \/>\nEn una suspensi\u00f3n McPherson normal, el eje sobre el que pivotan (o \u00abtuercen\u00bb) las ruedas delanteras viene determinado por el eje del propio amortiguador. En una suspensi\u00f3n McPherson de pivote desacoplado, la pieza que est\u00e1 unida a la parte inferior del amortiguador est\u00e1 dise\u00f1ada para desplazar el eje de pivote hacia la posici\u00f3n buscada. Esta soluci\u00f3n se aprecia bien la imagen siguiente (corresponde a un Opel Insignia OPC, pero lo que se ve vale para el Astra OPC). En color entre naranja y amarillo se ve la pieza clave que sirve para \u00abdesacoplar\u00bb dicho eje.<br \/>\n<div id=\"attachment_4142\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4142\" class=\"size-full wp-image-4142\" alt=\"Opel Insignia OPC. Suspensi\u00f3n de pivote desacoplado o Hiperstrut\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/05\/010.jpg\" width=\"700\" height=\"462\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/05\/010.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/05\/010-480x317.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><p id=\"caption-attachment-4142\" class=\"wp-caption-text\">Opel Insignia OPC. Suspensi\u00f3n de pivote desacoplado o Hiperstrut<\/p><\/div><br \/>\n<!--more--><br \/>\nEn la siguiente imagen, de Renault (corresponde a un <a href=\"https:\/\/www.km77.com\/marcas\/renault\/2004\/megane\/renaultsport\/t01.asp\" target=\"_blank\" rel=\"noopener\">M\u00e9gane RS de 2004 <\/a>que tambi\u00e9n lleva una suspensi\u00f3n de pivote desacoplado) se ve c\u00f3mo casi coinciden el punto de apoyo de las ruedas y el eje del pivote<br \/>\n<div id=\"attachment_4081\" style=\"width: 510px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4081\" class=\"size-full wp-image-4081\" alt=\"Suspensi\u00f3n McPherson de pivote desacoplado\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/000.jpg\" width=\"500\" height=\"456\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/000.jpg 500w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/000-480x438.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 500px, 100vw\" \/><p id=\"caption-attachment-4081\" class=\"wp-caption-text\">Suspensi\u00f3n McPherson de pivote desacoplado. Imagen de Renault<\/p><\/div><br \/>\nA continuaci\u00f3n hay algunas im\u00e1genes reales de la suspensi\u00f3n delantera desde distintos puntos de vista:<br \/>\nEn esta primera foto real\u00a0 se puede ver bien la pieza que est\u00e1 unida a la parte inferior del amortiguador (pieza que corresponde a la que en la primera imagen aparece en color entre naranja y amarillo), cuyo dise\u00f1o es clave para conseguir el efecto comentado. Cuenta con una tuerca exc\u00e9ntrica, posiblemente para cambiar la alineaci\u00f3n de las ruedas.<br \/>\n<div id=\"attachment_4082\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4082\" class=\"size-full wp-image-4082\" alt=\"a OPC. Suspensi\u00f3n delantera\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0042.jpg\" width=\"700\" height=\"467\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0042.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0042-480x320.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><p id=\"caption-attachment-4082\" class=\"wp-caption-text\">Opel Astra OPC. Suspensi\u00f3n delantera<\/p><\/div><br \/>\nEn esta foto se ve la misma pieza que en la anterior, pero desde un \u00e1ngulo cenital<br \/>\n<div id=\"attachment_4083\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4083\" class=\"size-full wp-image-4083\" alt=\"Opel Astra OPC. Suspensi\u00f3n delantera\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0052.jpg\" width=\"700\" height=\"403\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0052.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0052-480x276.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><p id=\"caption-attachment-4083\" class=\"wp-caption-text\">Opel Astra OPC. Suspensi\u00f3n delantera<\/p><\/div><br \/>\nVista de la suspensi\u00f3n delantera desde delante.<br \/>\n<div id=\"attachment_4084\" style=\"width: 510px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4084\" class=\"size-full wp-image-4084\" alt=\"Opel Astra OPC. Suspensi\u00f3n delantera\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0062.jpg\" width=\"500\" height=\"428\" \/><p id=\"caption-attachment-4084\" class=\"wp-caption-text\">Suspensi\u00f3n delantera<\/p><\/div><br \/>\nUno de los amortiguadores delanteros, fabricado por Sachs. \u00abCDC\u00bb hace referencia a que son de ajuste variable de dureza<br \/>\n<div id=\"attachment_4085\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4085\" class=\"size-full wp-image-4085\" alt=\"Opel Astra OPC. Amortiguador delantero de dureza variable\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0071.jpg\" width=\"700\" height=\"425\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0071.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0071-480x291.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><p id=\"caption-attachment-4085\" class=\"wp-caption-text\">Opel Astra OPC. Amortiguador delantero de dureza variable<\/p><\/div><br \/>\nEsta imagen es relativamente parecida a la anterior, pero con un plano m\u00e1s abierto. A la izquierda est\u00e1 el conducto del l\u00edquido de frenos, en el centro el anclaje de la barra estabilizadora y a la derecha el amortiguador.<br \/>\n<div id=\"attachment_4086\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4086\" class=\"size-full wp-image-4086\" alt=\"Opel Astra OPC. Amortiguador delantero, anclaje de la barra estabilizadora y latiguillo de freno\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0081.jpg\" width=\"700\" height=\"447\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0081.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0081-480x307.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><p id=\"caption-attachment-4086\" class=\"wp-caption-text\">Amortiguador delantero, anclaje de la barra estabilizadora y latiguillo de freno<\/p><\/div><br \/>\nEl disco de freno delantero es de 355 mil\u00edmetros de di\u00e1metro, va ventilado y perforado.<br \/>\n<div id=\"attachment_4087\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4087\" class=\"size-full wp-image-4087\" alt=\"Opel Astra OPC. Disco y pinza de freno\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0013.jpg\" width=\"700\" height=\"459\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0013.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0013-480x315.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><p id=\"caption-attachment-4087\" class=\"wp-caption-text\">Disco y pinza de freno<\/p><\/div><br \/>\nNo s\u00f3lo las pinzas, sino tambi\u00e9n los discos de freno son de la marca Brembo<br \/>\n<img decoding=\"async\" class=\"aligncenter size-full wp-image-4089\" alt=\"Opel Astra OPC. Disco delantero de freno\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0032.jpg\" width=\"700\" height=\"345\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0032.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0032-480x237.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><br \/>\n&nbsp;<br \/>\nY de aqu\u00ed en adelante muestro fotos de la suspensi\u00f3n posterior, que es peculiar, como la de todos los Opel Astra. Consta de ruedas tiradas unidas por un eje de torsi\u00f3n, pero adem\u00e1s (y aqu\u00ed est\u00e1 lo \u00abraro\u00bb), tiene un paralelogramo de Watts. <a href=\"https:\/\/www.km77.com\/00\/opel\/astra\/2010\/t04.asp\" target=\"_blank\" rel=\"noopener\">Aqu\u00ed<\/a> hay informaci\u00f3n t\u00e9cnica sobre esta suspensi\u00f3n y sobre cu\u00e1l es la funci\u00f3n de cada elemento.<br \/>\n<div id=\"attachment_4090\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4090\" class=\"size-full wp-image-4090\" alt=\"Opel Astra OPC. Suspensi\u00f3n trasera\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0091.jpg\" width=\"700\" height=\"525\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0091.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0091-480x360.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><p id=\"caption-attachment-4090\" class=\"wp-caption-text\">Suspensi\u00f3n trasera<\/p><\/div><br \/>\nEn esta foto se ve mejor la estructura de esta suspensi\u00f3n. Por una parte est\u00e1 la barra hueca que trabaja a torsi\u00f3n (recorre el centro de la imagen) y por otra (en la parte derecha de la foto) est\u00e1 la articulaci\u00f3n central del paralelogramo de Watts, de donde salen dos tirantes hacia cada rueda.<br \/>\n<div id=\"attachment_4092\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4092\" class=\"size-full wp-image-4092\" alt=\"Opel Astra OPC. Suspensi\u00f3n posterior\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0122.jpg\" width=\"700\" height=\"501\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0122.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0122-480x344.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><p id=\"caption-attachment-4092\" class=\"wp-caption-text\">Suspensi\u00f3n posterior<\/p><\/div><br \/>\nAqu\u00ed se ve mucho mejor esa articulaci\u00f3n central<br \/>\n<div id=\"attachment_4093\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4093\" class=\"size-full wp-image-4093\" alt=\"Opel Astra OPC. Paralelogramo de Watts\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0111.jpg\" width=\"700\" height=\"357\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0111.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0111-480x245.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><p id=\"caption-attachment-4093\" class=\"wp-caption-text\">Paralelogramo de Watts<\/p><\/div><br \/>\nLa misma articulaci\u00f3n vista desde atr\u00e1s<br \/>\n<div id=\"attachment_4094\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4094\" class=\"size-full wp-image-4094\" alt=\"Opel Astra OPC. Paralelogramo de Watts\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0101.jpg\" width=\"700\" height=\"442\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0101.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0101-480x303.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><p id=\"caption-attachment-4094\" class=\"wp-caption-text\">Paralelogramo de Watts<\/p><\/div><br \/>\nY por \u00faltimo, una foto que no tiene nada que ver con las anteriores pero me llam\u00f3 la atenci\u00f3n. Es la parte inferior del motor, el c\u00e1rter y su uni\u00f3n con la caja de cambios (en la parte derecha de la imagen). Una cosa curiosa es que aparentemente el c\u00e1rter no tiene tap\u00f3n de vaciado de aceite.<br \/>\n<div id=\"attachment_4095\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" aria-describedby=\"caption-attachment-4095\" class=\"size-full wp-image-4095\" alt=\"Opel Astra OPC. C\u00e1rter del motor\" src=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0131.jpg\" width=\"700\" height=\"300\" srcset=\"https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0131.jpg 700w, https:\/\/www.km77.com\/revista\/wp-content\/uploads\/2013\/04\/0131-480x206.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><p id=\"caption-attachment-4095\" class=\"wp-caption-text\">Opel Astra OPC. Motor<\/p><\/div><br \/>\n&nbsp;<\/p>\n<p style=\"text-align: right\"><strong>Enrique Calle<\/strong><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Algunas de las cosas que distinguen a los coches deportivos son -adem\u00e1s de la potencia de su motor- los frenos, la suspensi\u00f3n y las ruedas. Son en gran medida los responsables de las reacciones en curva. La semana que me toc\u00f3 probar el Opel Astra OPC (prueba en km77.com) decid\u00ed que podr\u00eda ser buena idea [&hellip;]<\/p>\n","protected":false},"author":48,"featured_media":4081,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[3912],"tags":[6193,3956,6194,6195,6196,1338,22,3959,6197,6198,2227,6199,2654,2860],"class_list":["post-4080","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-engendro-mecanico","tag-amortiguadores","tag-astra","tag-barra-estabilizadora","tag-brembo","tag-eje-pivote","tag-frenos","tag-general","tag-gtc","tag-hiperstruts","tag-mcpherson","tag-opel","tag-paralelogramo-de-watts","tag-rueda","tag-suspension"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Opel Astra OPC. 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