36 - Aerodynamic Breakdown Analysis

* 3:00 a primer on the Virtual Wind Tunnel * 6:15 a dissection of Andrew (and his bike) * BARS 4.4% * FOREARMS 6.0% * FORKS 3.7% * FRAME 4.4% * FR WHEEL 2.7% * GEARTRAIN 7.0% * HEAD 1.4% * L FOOT 3.7% * L LEG 12.9% * R FOOT 4.8% * R LEG 27.7% * R WHEEL 0.5% * TORSO 10.0% * UPPER ARMS 10.8% (stop flexing, Andrew!) * 10:00 Andrews VERY aerodynamic head * 13:00 the components of drad: surface (viscous) drag and pressure drag * 18:45 Andrews VERY un-aerodynamic legs * 25:00 surprisingly ‘draggy’ forearms  * 26:15 and upper arms * 28:00 drivetrain drag * 33:00 Andrew’s overall bike vs rider drag contribution: 23% vs 77% * 35:45 the ‘Skinny Andrew’ prototype: no measurable improvement * 36:45 the ‘submarine gut’ advantage * 39:30 the ‘Skinny Arms and Legs Andrew’ prototype: 2% improvement * 41:15 aero vs instagram * 41:45 wheels are already quite aero. * 43:45 aero optimization priorities  * 1. Good bike fit * 2. Aero helmet * 3. Aero bars * 4. Front wheel * 5. Rear wheel  * 6. Drivetrain * 7. Bike frame * 48:30 don’t mount bottles on seat tubes! Check out our very first episode [http://x3training.com/podcast-01-humans-are-slow/] on why humans aren't fast. Here's an example of how to make legs aero in this video [https://www.youtube.com/watch?v=QR9jZjsvGN4]form the world of speed skiing.  To have your very own virtual wind tunnel analysis performed, reach out to Michael at X3 [http://x3training.com/contact/] or use this page [https://www.staczero.com/vwt/find-a-scanner]to find a service partner near you.