AERO PERFORMANCE
Our wheel profiles were developed around tyre widths up to 30 mm, maintaining aerodynamic efficiency while preserving the benefits of wider tyres.
RIDER BENEFIT:
SPEED IS ONLY VALUABLE WHEN IT REMAINS PREDICTABLE AND CONTROLLABLE, AS CONDITIONS CHANGE.
TECHNOLOGY OVERVIEW:
Partington rim profiles are developed through extensive CFD analysis and wind tunnel testing, targeting two variables simultaneously: aerodynamic efficiency and steering neutrality. Rather than optimizing for drag reduction alone, the rim shape balances aerodynamic forces around the steering axis, reducing steering disturbance while retaining the speed benefit of the sailing effect.
STEERING NEUTRAILITY:
As yaw angle increases, aerodynamic forces act increasingly off-center from the steering axis, creating a torque that the rider must counteract at the bars. By balancing these forces around the steering axis, the rim reduces that torque, so the wheel requires fewer steering corrections and feels calmer in crosswinds — without sacrificing the forward thrust generated by the sailing effect.
WHEEL & TYRE SYSTEM:
Aerodynamic performance is evaluated as a complete wheel-and-tyre system rather than the rim in isolation. Partington rim profiles are developed around tyre widths up to 30 mm, so aerodynamic efficiency is maintained at the tyre widths riders are actually using, rather than being optimized only for narrower tyres that no longer reflect common setups.
SPOKE DESIGN:
Spokes use a constant thin bladed profile along their full length to minimize drag, paired with a reduced hub frontal area that improves efficiency at lower yaw angles. The spoke-to-rim interface is seamless, reducing the localized airflow disturbance that occurs at a mechanical junction between two components
FRONT & REAR WHEEL OPTIMIZATION:
Front and rear wheels are tuned separately for their different structural and aerodynamic demands. The front wheel uses lower-drag spokes to prioritize aerodynamic efficiency, since it carries less driving load. The rear wheel uses a higher cross-section spoke to increase stiffness and power transfer, accepting a small aerodynamic penalty where it has the least effect on overall drag.
