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Triathlete photo editor Nils Nilsen had a chance to catch up with Ironman world champion Mirinda Carfrae and her new bike sponsor Felt Bicycles in the San Diego Low Speed Wind Tunnel. While Felt is somewhat of a regular fixture at the tunnel, this was Carfrae’s first wind tunnel experience. On hand was a small staff to test several new aero bars and positions with the goal of getting the reigning world champion the data to explore several new aero positions and refine her fit on her new ride, the Felt DA. Take a look at the behind the scenes images captured by Nilsen.