Aero Advantage: Andrew Feather's Hill Climb Bike Optimization

For a long time, the prevailing wisdom in competitive hill climbing was that minimizing weight was paramount, leading cyclists to strip down their bikes and reduce body mass. However, a significant shift is now occurring, with aerodynamics playing an increasingly vital role in a hill climber's strategy. Andrew Feather, a multi-time national champion known for his exceptional power-to-weight ratio, has embraced this evolution for the 2026 season, embarking on an intensive aerodynamic optimization project for his race machine.

Feather's journey into aerodynamic enhancements begins with his equipment and posture. He transitioned from his previous Cannondale SuperSix HiMod and SWI Aequus frames to a Specialized S-Works Tarmac SL8. This change also involved a downsize from a 54cm to a 52cm frame, allowing for more aggressive positional adjustments. Collaborating with Dr. Xavier Disley of AeroCoach, Feather significantly lowered his front end by 5cm and extended his reach by 6cm with a 130mm S-Works stem. Furthermore, he adopted the AeroCoach Ornix bar, narrowing his grip by 10cm to a mere 32cm. These modifications, initially requiring a period of adaptation, are designed to minimize drag, especially on courses like the Porlock Toll Road, which features a 6.2km stretch with a moderate 5.2% gradient – a profile where aerodynamic efficiency can yield substantial gains. Beyond positional changes, Feather has also updated his wheels and tires. He now favors Hunt's 5AM wheels from their Limitless range, a departure from his previous ultra-light Hill Climb SL tubular wheels. For tires, he has switched to Vittoria Corsa Pro Speed 28mm tubeless tires, a choice carefully selected to fit the 23mm internal rim width of his wheels, optimizing the aerodynamic interface between tire and rim. His drivetrain currently features a 2x Shimano Dura-Ace Di2 setup with Rotor Aldhu 52/36T chainrings, although he is considering a 1x configuration for race day to further streamline his setup and potentially reduce weight and complexity.

Andrew Feather's innovative approach highlights a growing trend in competitive cycling where marginal gains in aerodynamics can be as crucial as, if not more important than, weight savings, particularly on certain course types. This meticulous attention to detail, from frame choice and rider position to wheel and tire selection, demonstrates a forward-thinking strategy that challenges traditional paradigms. By continuously seeking improvements through scientific analysis and rigorous testing, athletes like Feather not only push their own boundaries but also contribute to the broader evolution of cycling technology and tactics. His commitment to optimizing every aspect of his ride reflects the relentless pursuit of excellence and the understanding that success at the highest levels often lies in the aggregation of small, well-executed advantages.