![]() ![]() Recreational athletes riding at lower speeds can benefit from the sailing effect as well! How? The effect of sideways wind is much more potent at lower speeds because the inflowing air exerts an even greater effect over a longer period of time. Ergo: The overall drag is significantly reduced.īy the way: It’s not only professionals riding at speeds of more than 40 km/h who benefit from this reduced drag. This means that the air flowing in from the side hits the specially designed tubes like a sail, pushing the bike forward. There, not only wind from the front is simulated, but also crosswind: Under the influence of these winds, the special shape of the Pride II's tubes creates a so-called sailing effect. Time for the wind tunnel: virtual reality followed by real lifeĪfter the virtual wind tunnel, the next step was to test the bike in a real-life one. In addition to the aerodynamics, the frame also had to be optimised in terms of stiffness, weight, ergonomics, and cable routing. Numerous iteration steps were necessary for this. A clear advantage of CFD simulations: They shorten the development process and save costs.īased on the results of the CFD simulations, the design of the components was refined further and further, which brought the bike closer to an aerodynamic optimum. ![]() The central focus: their aerodynamic potential. Three-dimensional sketches of the tube concepts, the forks and cockpit or the seatpost were tested in several development steps in a virtual wind tunnel. These numerical flow simulations are also known as computational fluid dynamics, hence the abbreviation CFD. The Swiss aerodynamics service provider and wheel manufacturer took over the implementation of the CFD simulations. Right at the outset, SIMPLON's experts enlisted the support of the aerodynamics specialists at Swiss Side. CFD simulations: time-saving preliminary work in a virtual environment They define exactly which tube dimensions may be used, which in turn affects the aerodynamics. During this first stage in the development of the Pride II, the guidelines of the cycling world federation UCI played an important role. The first step in the production of a bike is its design. ![]()
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