The LeTour time trial could determine the overall result, so what features help the riders shave off those crucial seconds? cycling
Tour de France riders will tackle the only time trial of the 2023 race on Tuesday 18th July and, with the standings so tight at the top, it could prove decisive in determining the overall winner. Being an exceptional athlete is what matters most, of course, but here's the tech that’ll help them shave off the seconds in the race of truth.
Colnago has gone for a very short head tube and a tall stack of spacers under each elbow rest to get the correct position. It says that this approach offers less drag than “a more voluminous frame”.This Groupama/FDJ bike has a large rise from the base bar to the aero extensions on this Lapierre Aerostorm DRS.
Speaking of low seatstays, the ones on Colnago's TT1 run parallel to the ground for about half their length before kinking down to the rear dropouts. You can clearly see the shaping that's designed to cut through the air., as ridden by Bahrain Victorious, has a down tube that is dropped and cut away around the trailing edge of the front wheel in order to manage airflow in that area, while the fork legs are narrow and deep too.
Although Alpecin–Deceuninck rider Fabio Van den Bossche has a bottle fitted to his Canyon Speedmax CFR , this angle shows how well it is sheltered from the wind. You see large variations in riding positions . For example, EF Education-EasyPost's Richard Carapaz goes for a high hand position and really tucks himself in behind.
The idea is that this allows each athlete to ride with no gap between the bar extensions and their forearms to keep drag to a minimum . Some riders have just a single shift button on each extension. One side moves the rear derailleur inward and the other moves it outward. If they need to change chainrings they can reach down to the base bar, but that's rarely required on a flat TT course.
Will we see disc wheels used in the Tour de France time trial which involves a lot of climbing? Teams have to consider the aero gains across the whole course versus the weight penalty on the climbs so we'll have to wait to see what they decide. Many teams use tri-spoke or 4-spoke front wheels. This is a Pro 3-spoke wheel on a Groupama-FDJ bike, for instance. Again, it's not the lightest wheel in the world but the spokes are shaped specifically to reduce drag and that's often a more important consideration.Riders tend to push bigger gears on their time trial bikes than they do on their standard road bikes.
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