Hello everyone,
Today, the Tour de France reaches the summit of the Planche des
Belles Filles.
Froome’s 2012 record is currently 16:11 according to the official sign and
16:23 according to the power calculation.
With my calculator, and regardless of whether reality is not
entirely accurate, this represents 441 watts to be developed Tour de France to ride at an average speed of 21.2 km/h. I
will use it to see what can be gained since
2012 with the progress of equipment at this speed and power level
As the Tour International reminded us in its latest issue, the resistance to Tour de France overcome on hills is due to the weight of the rider and their bike, rolling resistance, wind, and friction losses. I’m going for a windless day to simplify
the calculations. The weather forecast predicts very little more.
Source Tour int, 6.8 kg bike for everyone.
The bikes will all be 6.8 kg for this day and at this speed
of 21 km/h, it will be difficult to make a difference b2b email list on the aerodynamics between a
2012 profiled bike vs 2017. Tour int has done some comparative calculations and estimates the gain at
3 s between the Dogma F10 of the SKY and the Canyon Ultimate CF SLX of Movistar on the
final 8 km of the Izoard….
I suppose that they took a speed equivalent to 6
w/kg for the final at 7.5% which also represents 21 km/h. To return to the climb of the day and as it is a little shorter, we can
certainly estimate and retain a gain of 2 s between the Dogma 2012 (current trends in ecommerce fraud and digital transactions Ultimate equivalent in scx) and the F10 of 2017.
Regarding friction losses, we can assume that the
big teams will all be equipped with ceramic bearings and that this was
certainly already the case for SKY in 2012. The gain could come from the
oversized derailleur pulleys available for the past betting email list two years. According to Friction Fact, it would be close to 1 to 1.5
W towards 250 W compared to an
11-tooth ceramic set and 1.75 W vs. conventional pulleys.