Tour de France 2013: Behind the scenes with Tour mechanic

Garmin-Sharp's Geoff Brown tells BBC Sport's Matt Slater what makes a good Tour de France mechanic.

Brown explains why the bikes are kept meticulously clean and shows how quickly he can change a rear wheel.

The 2013 Tour is Canadian Brown's 17th, having previously worked for Lance Armstrong's Motorola, US Postal Service and Discovery teams.