The_Juan said:
What part I have say is not true and with which argument??
I am going to give arguments.
http://www.over40cyclist.com/drafting-in-cycling/
Drafting in cycling depend on the speed, but if we consider just two riders the advantage could be more or less 10 % at 20 Km/h, and 30 % at 50 Km/h. it depends as well of wind power and direction.
I dont know exactly, but something like that. It is true that in climbs as Mortirolo or Ancares, when you are in km above 10 %, cyclist use to say in that situacion drafting it useless.
That is almost true, but it is not a question of % slope, but speed of the riders. if the speed is 15 km/h drafting works and at least is a 2 % (maybe more) of energy saved. Very little, but is something.
But Ancares has 3 kms close to the finish not so step and where there are even half a km plane. In that 3 Km Froome was more or less at 25 km/h average, in the flat at 35 k/h...
To go that 3 Km at his whell can be an advantage of 10-15 %, if you add that to the little advantage in the previous 3 kms, it is an important advantage for Contador, and to put in 1 km at 10 %, than take more than 3 minutes, 15 seconds, 8 % faster, dont show to be stronger in the hole climb.
I would say of course the same if you put an example in wich Contador do the opossite, as in the Vuelta with Purito or Valverde in some stages.
As always I was looking at the motorbikes, becouse Contador knows quite well how to use his draft (ey, that is a mistake of motorbikes, for me is a good point for Contador, it is part of the game and everybody can do it if he knows when is possible), but today motorbikes didnt have any role, that is true. (at 20 Km/h the moto start to help at about 5 meters, at it is the closest he was, so it wanst a factor)