The bar’s distinctive wing-shaped top designed using Computational Fluid Dynamics (CFD), the same software used to design Zipp Firecrest wheels. And the difference of that design is real. A traditional round-tube section creates drag of about 0.74 Newtons, which Zipp found requires about 7.5 watts of effort at 30mph (48.3kph) to overcome. The airfoil developed in CFD that is used in the SL-70 Aero handlebar creates just 0.11N of drag, which means a savings of 6.4 watts over a round-tube section. Beyond aero performance, the SL-70 Aero features the a 70mm reach to allow proper fit without compromising stem length and steering control. The revised 10-degree ramp angle to the brake hoods eliminated need for up-rotated bars. The bar also provides ample wrist clearance for riding and sprinting in drops. Quoted “The Zipp SL-70 Aero is the closest thing to get to the position of TT bike even on the road. It looks good and it gives me the opportunity to go in an aero position with the arms inside the handlebar,” said Tony Martin of Omega Pharma – Quick-Step rider, world time trial champion….
– Zipp SL-70 Aero Road Handlebar Road Handlebars – £174.99 (RRP – £)
