Rieju has announced that it will unveil the replacement for their RS2 range of small capacity sports bikes at the EICMA 2009 International Motorcycle Show in Milan on November 9. The new RS3 will have its official press unveiling at the International Motorcycle Show in Milan where the brand new model will take centre stage.

From November 10-15, in Hall 6 stand L18 of the Milano Fiera, this third-generation Rieju RS model will be shown to the public for the first time. Rieju has developed this completely new ‘ground up design’ working in close collaboration with Xenophya Design and PTW engineering services consultancy, ArianeTech Ingeniería.

An evolution of the original RS concept, the new RS3 combines sport bike technology with comfort and versatility aimed squarely at the youth market.

These images give a glimpse into the design process; including design studies and sketches, photos from the clay model construction process and CAD images.

Aimed at the small capacity sports bike segment the RS3 it is an important ‘flagship’ model for Rieju.

Working closely with the team at ArianeTech the designers at Xenophya worked on ‘Juliet’, as the model was known internally, sketching loose concepts, subsequently applying those ideas to the concurrently developing package.

“We didn’t have too much of a design brief; but our core intention was to have a MotoGP inspired design language – pure, simple and direct. There is certainly some GP8 and M1 influence in the sketches. We also spent a lot of time looking at light weight historical racing 125s and 250s.” says Mark Wells. “We wanted the design to have a layered feel and to reveal surface details and visual interest, as you looked closer. There are subtle ‘character lines’ in the surfaces which give the appearance sheet material stretched over a structure. The silhouette of a classic racer interplays with the volumetric forms of a contemporary sports bike.

The design team then went straight from this 2D development into a full scale clay model. This was created by hand over a 6 week period, then digitized and developed digitally.  “We make a clay model because it’s much better to see the design develop in three dimensions. You feel the form more tangibly with a physical clay model than you can in CAD. The model emerges from the clay as the design develops, it’s a bit like a camera coming into focus.” says Mark Wells. “You start by getting basic volumes and proportions correct then as the model progresses the image becomes more distinct and clear as lines and surface language are refined. The first aspect to any design that we register are its proportions and clay allows us to develop this in a natural manner; with clay you get craftsmanship and the human-hand touch.”

Once the clay model was signed off Scan data was re-surfaced using a number of modelling software packages to produce high quality NURBS surfaces with smooth transitions and curvature. Throughout the process the industrial design team at Xenophya continued to liaise with the Design Engineers at ArianeTech to ensure smooth transition from concept to production.

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