Making one of the peloton's fastest time trial suits even faster
The difference between winning and losing can come down to the smallest details. Team Giant-Alpecin’s experts have been working with Delft University of Technology (TU Delft) and the team’s premium clothing partner, Etxeondo, on a project to make the team’s fast time trial suit even faster. “The partnership with TU Delft provides us access to additional resources to speed up our innovation projects,” said scientific expert Teun van Erp (NED). “Research shows that the composition and structure of the fabric in a rider’s clothing has a significant impact on air resistance, and this has been the starting point for investigating to what extend we could further improve the aerodynamics of our time trial suits, which are already among the fastest in the pro peloton. “We wind tunnel tested different types of fabrics with different structures to understand why one suit is faster than another and to determine what fabrics should be placed on which parts of the body for optimal results. We used the unique PIV (Particle Image Velocimetry) technique, which is only available at TU Delft. This technique allows us to record and analyze the airflow by the use of helium-filled soap bubbles, laser technology and special software. We need soap bubbles and a laser to make the airflow visible and apply helium to let the bubbles drift, because the molecules in soap are heavier than air and would otherwise drop.” Technical R&D expert Tom Davids added: “With Etxeondo we brought theory into practice and extensively tested a range of fabric types to identify different options and ensure that no compromises are made to fit or comfort.” Warren Barguil (FRA) and Tom Dumoulin (NED) will use their tailor-made time trial suits for the first time on Tour stage 13, the 37.5km time trial on Friday, July 15.
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