Aerodynamics is a key cycling attribute. Through the years Zipp has accumulated knowledge across a wide spectrum from computer simulation models to data collection in 3 different wind tunnel systems. In this section, Josh answers a wide array of questions around wheel performance, riding positions, relative component contribution to drag and compares wind tunnel data to real world conditions.

Where should I spend my limited funds to get the largest bang for the buck?.
- ZippCast28 explains why investing in aero-wheels can make a major difference to your performance, looks at the relative contribution of front vs. rear wheels and the importance of proper bike fit for comfort and power.

Will ceramics improve my performance?
- ZippCast29 examines the relative importance of bearings, the power savings, the costs and answers the question what you really get when you invest in ceramics where those bearings should best be located ( wheels, BB or derailleur pulley) and explains the advantages and power savings of true aero-wheels.

Aerobars, power, fit and performance
- ZippCast30 explores the role of aero-bars, gives the rationale for Zipp's Vuka bar line and looks at the trade-offs between fit, power and drag. Listen to Josh Poertner take the mystery out aerodynamics when looking at the bike system as a hositic unit.

Why do dimples work and what do they really deliver?
- ZippCast31 explicates the rationale behind dimples on discs, rims, hubs and tires. It's all about surface roughness, boundary layers, laminar flow, stalling angles, yaw and air movement. Dimples on hubs deliver 1-3 watts and dimples + Zipp's rim shapes help extend the yaw angle (from 11 to 15 degrees) at which riders still gain aero advantage.