La familia TR (250cc)
Otra de la creaciones de Antonio Cobas ya dentro de JJ Cobas fue la moto de resistencia JJ Cobas BMW de la que ya hemos hablado en otro apartado del blog. El año 1984 fue bastante prolifico en creaciones para Antonio ya que no terminava un proyecto y se enfrascaba en otro, o realizava varios proyectos al mismo tiempo.
Another of Antonio Cobas’ creations at JJ Cobas was the JJ Cobas Enduro BMW we have already talked about in another part of the blog.1984 was quite a prolific year for Antonio’s creations. He wasn’t finished with a project and he was already engaging in another, or he would work on several projects at the same time. That year, Antonio designed the first Grand Prix bike for JJ Cobas: the TR
La TR segun Antonio Cobas
«Es la primera vez que consigo hacer un chasis por debajo de los 4 kilos -afirmavá Antonio – para ser exactos: 3.950 gramos con la pintura incluida…»
‘It’s the first time that I’ve built a frame that is below 4 kilos (9 pounds), said Antonio. To be precise: 3.95 kilos (8.7083 pounds) with paint included.’ ‘But the most surprising thing is that the bike hasn’t required any adjustment since its debut in Jarama at the beginning of the season. When tuning TR1, we’ve only needed to make a few adjustments on the material, we kept the same geometry on the suspension and the steering wheel, without need of remaking any blueprint.’ ‘All of this have made things much easier for us when planning a small series of TR1C client racing version based on the TR1 prototype driven by Carlos Cardús, that we’ve been developing for the world championship.’‘Essentially, TR1C matches on 80% the TR1 driven by Carlos, except for the embellishment of the pieces and a remarkable improvement in the quality of the anti-oxidant coating. But the truth is that only one TR1 blueprint was usable.’ As Antonio explained: ‘The TR1C serial launching has forced us to completely repeat several blueprints. We’ve removed some weight here and there, so that the new bikes of the series weigh one less kilo (2.2046 pounds) than the official JJ Cobas from the 1984 season.’ ‘The bikes are sold without engine. The original design contains more than 400 pieces and 39 different types of screws, despite our concern to unify the components to the max.’ ‘All pieces will be provided with a meticulous computing nomenclature in order to be able to control by computer the organization of storage and the supply of spare parts. We will operate like a big factory. In this sense, the same conditions are needed to build ten bikes as ten thousand…’
La evolucion de la TR1 y 2: la TR3
El año 1984 nacia la TR-1 y al año siguiente se construyo una nueva version mejorada de la misma. La evolucion de la 250 CC no continuó hasta el año 1987 en la que se creo la TR3-C, de echo este modelo solo tuvo cambió de detalles y evolucion del motor Rotax en tandem.
Prueva de la JJCobas TR3 250cc campeona de Europa 1987 con Xavier Cardelus Mestre:
The evolution of TR1 and TR2: the TR3
In 1984, TR1 was born and an improved version was built the following year. The evolution of
the 250cc bike didn’t continue until 1987, when the TR3-C was created. In fact, this model only had minor adjustments and an evolution of the inline Rotax engine.