The razor-sharp triathlon bike. An aerodynamic and lightweight racing machine.
Designed in collaboration with BMW Group DesignworksUSA using sophisticated Computational Fluid Dynamics simulations, extensive wind tunnel testing and input from the UnitedHealthcare Pro Cycling Team's TT specialists. BAYAMO is fast and trim, meeting the highest standards for aerodynamics, stiffness and comfort.BAYAMO features NEILPRYDE's unique Kamm-tail aerofoil. While a traditional aerofoil profile performs well at narrow yaw angles, it is inefficient at the wider yaw angles of up to 30° experienced by a rider during time trials and triathlons. The narrow profile and long trailing edge of a traditional aerofoil are also structurally unsuitable for withstanding the dynamic forces of a powerful rider. The NEILPRYDE Kamm-tail takes advantage of the phenomenon where the "tail" of the aerofoil is truncated, cheating the wind into behaving like the truncated surface is still present and minimising drag. The subtle chamfered trailing edge also reduces turbulence at wider yaw angles, dramatically improving aerodynamic performance.
The profile of the NEILPRYDE
Kamm-tail aerofoil is 10% wider
than those found on other leading
time trial bikes. This has the dual
benefit of delaying flow separation,
further reducing drag and providing
an inherent shape that is up to 60%
stiffer than traditional aerofoils.
The result is a frame that balances the aerodynamic performance with stiffness to weight ratios necessary for a professional level race machine.
Highlights
Anyone can design a bike, but few can create an icon. We began by looking for a design team that shares our passion for winning products and our design approach of "Elegantly Engineered". This is why we chose to work alongside DesignworksUSA, a subsidiary of the BMW Group.
Tube profiles are optimised to reduce drag through a wide range of wind yaw angles and relative to the nature of the airflow at specific locations on the frame. Wider aerofoil profiles are utilised to achieve the balance between aerodynamics and stiffness. The unique profiles designed for the ALIZE have been further refined in the BAYAMO time trial frames.
Through computational fluid dynamic modeling and extensive wind tunnel testing (which is much more fun that sitting in front of a computer) our aerodynamicists developed a revolutionary design that "tricks" the traditional Kammtail behind the lower down tube to extend further.
A truncated aerofoil design in the downtube combined with the unique seat tube profile keeps airflow smooth around lower portions of the frame. The result: a drag reducing design that allows a stiff bottom bracket, without the penalty of additional weight, to achieve the required power transfer.
Test Reports
February 2013
"Perfilada por el viento"
June 2012
"The Bayamo was first spotted at Interbike as a prototype and is designed to offer the dual package of aerodynamics and stiffness."
