In Olympic cycling the smallest of tweaks to the bike and the rider's position can make the difference between glory and failure. Discover how marginal gains have helped Great Britain's track cyclists repeatedly top the medal table. Part two of three episodes for The Economist's Winning Edge series. Winning Edge website
Filmed, directed and produced by Liam Nolan
Executive producer: Adam Jessel
Assistant producer and camera: Max Thurlow
Editor: Tom Stokes / Colin Wadsworth
Graphics & Art direction: Lee Mears / Andy Giles
Economist Films, 2018