{"id":32368,"date":"1969-02-23T18:29:06","date_gmt":"1969-02-23T17:29:06","guid":{"rendered":"https:\/\/bonaiguatrial.com\/?p=32368"},"modified":"2026-07-14T09:40:57","modified_gmt":"2026-07-14T07:40:57","slug":"bultaco-formula-iv-1969","status":"publish","type":"post","link":"https:\/\/bonaiguatrial.com\/ca\/bultaco-formula-iv-1969\/","title":{"rendered":"BULTACO F\u00d3RMULA IV &#8211; 1969"},"content":{"rendered":"<p>El 23 de febrero de 1969, Juan Luis Gaillard realiz\u00f3 una visita a Bassella (Lleida) para fotografiar uno de los veh\u00edculos m\u00e1s singulares relacionados con la historia de Bultaco: el F\u00f3rmula IV, un peque\u00f1o monoplaza de competici\u00f3n equipado con un motor Bultaco de 250 cc.<\/p>\n<p>Las im\u00e1genes muestran el veh\u00edculo junto a Mario Soler y su hijo Estanis Soler, dos nombres inseparables de la historia del motociclismo en Bassella. Mario Soler destac\u00f3 por su extraordinaria habilidad como mec\u00e1nico y restaurador, reuniendo durante d\u00e9cadas una colecci\u00f3n que acabar\u00eda convirti\u00e9ndose en el origen del actual Museu Moto Bassella, mientras que Estanis continu\u00f3 esa labor de conservaci\u00f3n y divulgaci\u00f3n del patrimonio motociclista.<\/p>\n<p>El Bultaco F\u00f3rmula IV constituye una de las realizaciones m\u00e1s desconocidas vinculadas a la marca del dedo rampante. Diversas publicaciones especializadas atribuyen su construcci\u00f3n a Mario Soler, indicando que el proyecto naci\u00f3 con un motor prototipo cedido por Don Paco Bult\u00f3 y con la colaboraci\u00f3n del piloto Salvador Ca\u00f1ellas en su desarrollo. Sin embargo, hasta el momento no hemos localizado documentaci\u00f3n original de 1968 o 1969 que confirme de forma definitiva estos extremos, por lo que conviene considerar esta informaci\u00f3n como la versi\u00f3n m\u00e1s difundida, pendiente de ser corroborada mediante fuentes contempor\u00e1neas.<\/p>\n<p>Sea cual fuera su origen, este monoplaza representa el esp\u00edritu innovador que caracteriz\u00f3 a Bultaco durante aquellos a\u00f1os. La experiencia acumulada en el desarrollo de motores de altas prestaciones permiti\u00f3 explorar nuevos caminos m\u00e1s all\u00e1 de la motocicleta, dando lugar a un veh\u00edculo \u00fanico que hoy forma parte de la historia del automovilismo y del motociclismo espa\u00f1ol.<\/p>\n<p>Las fotograf\u00edas de Juan Luis Gaillard constituyen, adem\u00e1s, un valioso testimonio de aquella jornada en Bassella, conservando para la historia la imagen de un proyecto excepcional y de quienes contribuyeron a preservar una parte fundamental del patrimonio de nuestro motor.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-32431\" src=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-001.jpg\" alt=\"\" width=\"2176\" height=\"1392\" srcset=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-001.jpg 2176w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-001-768x491.jpg 768w, 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srcset=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-006.jpg 2181w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-006-768x490.jpg 768w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-006-1536x980.jpg 1536w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-006-2048x1307.jpg 2048w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-006-18x12.jpg 18w\" sizes=\"(max-width: 2181px) 100vw, 2181px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-32435\" src=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-007.jpg\" alt=\"\" width=\"2213\" height=\"1392\" srcset=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-007.jpg 2213w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-007-768x483.jpg 768w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-007-1536x966.jpg 1536w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-007-2048x1288.jpg 2048w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-007-18x12.jpg 18w\" sizes=\"(max-width: 2213px) 100vw, 2213px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-32436\" src=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-008.jpg\" alt=\"\" width=\"1397\" height=\"2197\" srcset=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-008.jpg 1397w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-008-768x1208.jpg 768w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-008-977x1536.jpg 977w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-008-1302x2048.jpg 1302w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-008-8x12.jpg 8w\" sizes=\"(max-width: 1397px) 100vw, 1397px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-32437\" src=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-010.jpg\" alt=\"\" width=\"2197\" height=\"1397\" srcset=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-010.jpg 2197w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-010-768x488.jpg 768w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-010-1536x977.jpg 1536w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-010-2048x1302.jpg 2048w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-010-18x12.jpg 18w\" sizes=\"(max-width: 2197px) 100vw, 2197px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-32438\" src=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-011.jpg\" alt=\"\" width=\"2197\" height=\"1397\" srcset=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-011.jpg 2197w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-011-768x488.jpg 768w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-011-1536x977.jpg 1536w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-011-2048x1302.jpg 2048w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-011-18x12.jpg 18w\" sizes=\"(max-width: 2197px) 100vw, 2197px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-32439\" src=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-012.jpg\" alt=\"\" width=\"1397\" height=\"2197\" srcset=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-012.jpg 1397w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-012-768x1208.jpg 768w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-012-977x1536.jpg 977w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-012-1302x2048.jpg 1302w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-012-8x12.jpg 8w\" sizes=\"(max-width: 1397px) 100vw, 1397px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-32440\" src=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-013.jpg\" alt=\"\" width=\"1397\" height=\"2107\" srcset=\"https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-013.jpg 1397w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-013-768x1158.jpg 768w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-013-1018x1536.jpg 1018w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-013-1358x2048.jpg 1358w, https:\/\/bonaiguatrial.com\/wp-content\/uploads\/1969\/02\/404-1969-013-8x12.jpg 8w\" sizes=\"(max-width: 1397px) 100vw, 1397px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>El 23 de febrero de 1969, Juan Luis Gaillard realiz\u00f3 una visita a Bassella (Lleida) para fotografiar uno de los veh\u00edculos m\u00e1s singulares relacionados con la historia de Bultaco: el F\u00f3rmula IV, un peque\u00f1o monoplaza de competici\u00f3n equipado con un motor Bultaco de 250 cc. Las im\u00e1genes muestran el veh\u00edculo junto a Mario Soler y [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":32434,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-32368","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bultaco-varios"],"_links":{"self":[{"href":"https:\/\/bonaiguatrial.com\/ca\/wp-json\/wp\/v2\/posts\/32368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bonaiguatrial.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bonaiguatrial.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bonaiguatrial.com\/ca\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bonaiguatrial.com\/ca\/wp-json\/wp\/v2\/comments?post=32368"}],"version-history":[{"count":4,"href":"https:\/\/bonaiguatrial.com\/ca\/wp-json\/wp\/v2\/posts\/32368\/revisions"}],"predecessor-version":[{"id":32442,"href":"https:\/\/bonaiguatrial.com\/ca\/wp-json\/wp\/v2\/posts\/32368\/revisions\/32442"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bonaiguatrial.com\/ca\/wp-json\/wp\/v2\/media\/32434"}],"wp:attachment":[{"href":"https:\/\/bonaiguatrial.com\/ca\/wp-json\/wp\/v2\/media?parent=32368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bonaiguatrial.com\/ca\/wp-json\/wp\/v2\/categories?post=32368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bonaiguatrial.com\/ca\/wp-json\/wp\/v2\/tags?post=32368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}