With feedback from their Pro-Tour sponsored Lotto-Belisol team, Ridley has developed an evolution of their Noah FAST aero bike concept into the professional-level Noah SL. The Noah SL fits in between the 2 bike the pro-team picks from, the Helium and Noah Fast, pulling benefits from each to create a bike to keep weight low, while still giving riders the aero advantages they’ve come to demand for the fast and bunch sprint races.
Come past the cut for detail on the development and the tech on the new bike.
Ridley began the development of their FAST concept in 2010, with a move to aero tubing profiles and building the brake systems into the frame and fork to remove them from the wind. Since that time they have built the FAST concept into the Noah aero road and Dean TT/triathlon bike lines to benefit from incrementally improved aerodynamics.
Ridley carries over some of the top-end aero tech into the SL, while cutting a bunch of weight and making it more friendly to the pro team race environment, in part by carrying over the chainstays and dropouts from the Helium SL. What comes over for aero benefits are their F-Tubing profiles and the F-SplitFork, while the frame does with standard brake mounting to aid servicing.
The F-Tubing’s main goal is to keep the air flowing directly over the tube’s exterior. Ridley claims that by inmolding grooves into the leading curves of their truncated NACA profiles, micro turbulence is created that allows a boundary layer of air to form and to ’stick’ to the tube, allowing a smooth laminar airflow hugging the profile and off the trailing edge.