Starting in Lure, the For those not familiar with the climb, it might not be the Galibier , but at 5. Consequently, kit choice will be crucial because riders will need to optimise their aerodynamics, weight and rolling resistance to achieve their best performance.
While a standard time-trial setup will be the obvious choice for the opening part of the stage, the prospect of a significant climb to finish makes the extra weight involved with all of that aerodynamic kit decidedly less appealing. Of course, how hard a rider can turn the pedals will also make an enormous difference, but when the biggest race of the season is on the line, the best teams will be leaving no stone unturned.
The riders themselves will also look to be as light as possible, with food and fluid intake clearly pre-defined to further minimise weight and maximise performance. There, an increase in mass of 1kg results in a second penalty. Designers hide many components from the wind in order to improve aerodynamic efficiency. Fork crowns and stems are typically incorporated into a bike's existing silhouette so as not to increase the frontal area.
Merida claims that the covers over its brakes the rear brake is located on the underside of the chainstays reduce the aerodynamic drag by the equivalent of three watts, for example.
The Shimano Di2 Junction Box lives in a small compartment in the Pinarello Bolide's down tube so as not to cause any extra turbulence. You'll rarely see external cables or brake hoses on a pro-level time trial bike. Any that you do spot are likely to be well managed to avoid any unnecessary drag. The idea of aerobars is that they allow the rider to achieve an aerodynamically efficient position that has in many cases been honed in the wind tunnel, while being comfortable enough to stay in that position for the duration of the stage or race.
Most riders use standard bars that are adjusted to suit their dimensions. The extensions can be set further forward or back to get the right position. The height of the armrests and extensions can usually be set with the use of spacers.
Emanuel Buchmann of Bora-Hansgrohe has his armrests positioned low, but that isn't the best position for everyone. Similarly, different riders have different aerobar width preferences.
This rider has his extensions positioned close to one another This doesn't simply come down to aerodynamics; some riders find that a narrow position constricts their chest and affects their breathing. It is 3D printed from titanium and made especially to fit the riders. That might sound like a long time but complex components can be made using this technique, Pinarello doesn't need to invest in new manufacturing tools, and the design can be changed easily to suit different riders.
All of this helps to keep costs down. Rather than positioning his forearms horizontally, Dennis has them angled, his hands significantly higher than his elbows. UCI rules state, "The handlebar extensions plus any accessories controls, levers, etc. We didn't measure but Dennis must have been close to the limit here. That material covering on the topside of the aero extensions is the CPC material that Prologo uses on some of its saddles, by the way.
It's no wonder he was trying to make the most out of this bike, as it later turned out that he wasn't quite happy with it You see grip tape used extensively on base bars, shifters and aero extensions to stop riders' hands slipping, particularly when sweaty. On this bike, a foam ramp has been added to smooth the transition from the bar to the lever and covered it in grip tape. It's easy to apply and effective. If it's a flat course, most riders will go with a disc wheel at the rear.
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