Airfoil Development for the Trek Speed Concept ... - Slowtwitch.com
Airfoil Development for the Trek Speed Concept ... - Slowtwitch.com
Airfoil Development for the Trek Speed Concept ... - Slowtwitch.com
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Executive Summary<br />
After years of research, development, and testing, <strong>Trek</strong> is confident to introduce <strong>the</strong> <strong>Speed</strong> <strong>Concept</strong> as <strong>the</strong> fastest production bicycle<br />
in <strong>the</strong> world. This claim is not made lightly – <strong>the</strong> <strong>Speed</strong> <strong>Concept</strong> is <strong>the</strong> final result of over 250 CFD simulations and 2,100 wind tunnel<br />
runs. At <strong>the</strong> core of its low-drag per<strong>for</strong>mance is <strong>the</strong> Kammtail Virtual Foil (KVF) tube shape, which itself is <strong>the</strong> result of a nine month<br />
project dedicated to low-speed airfoil development. The KVF is an unconventional aerodynamic shape proven to have incredibly low<br />
drag, with a light, stiff profile. In fact, <strong>the</strong> <strong>Speed</strong> <strong>Concept</strong>’s KVF tubes <strong>the</strong>mselves are proven to have negative drag (thrust) in a wide<br />
range of <strong>com</strong>mon wind conditions. <strong>Trek</strong> has gone to great lengths to accurately measure <strong>the</strong> aerodynamic drag of <strong>the</strong> <strong>Speed</strong> <strong>Concept</strong><br />
against that of <strong>the</strong> <strong>com</strong>petition, and <strong>the</strong> results speak <strong>for</strong> <strong>the</strong>mselves.<br />
Figure 1: Drag of several popular triathlon bikes.<br />
Notes: San Diego Low <strong>Speed</strong> Wind Tunnel. Without rider. Tares removed.<br />
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