Netserk said:
Hi FGL what is your take on these questions?
I'll do my best.
1) Was the wind on the day an advantage or a disadvantage compared to a (totally unrealistic) dead calm day with no wind? (This question is related to estimated power)
As stated before, I rewatched the whole climb, from Bedoin on, for me that false flat is not part of the actual climb, but hey, lets include it, for the sake of the argument.
The false flat from Bedoin till about 15.5K had crosswind, looking at the flags quite substancial crosswinds. First from the right, a very few times from the left, I noticed one little part with a cross/tailwind. Is that favourable? Well, compared to no wind not with my experience on the bike, I hate crosswinds, when you cant change lanes you in fact are having headwind.
The forest is done and dusted, there is no wind problem/advantage there, no less power needed there due to
a howling tailwind. Sorry, couldnt resist
The section above the treeline was cross/tail/head, at best it evens out, but that is my interpretation on what I saw. The Irizar SRM could suggests otherwise though, but how reliable is his SRM when he was back in the field how much minutes? The top contenders should release their powerfiles so a pattern can be established, but hey, we know the answer to that question.
So, to go back at the question: a part crosswind, a part tail/crosswind, a part headwind. I am not totally sure, I
think it evens out in the end.
2) Were the circumstances similar for the two record times from Armstrong and Froome? (Can we compare the two performances)
Not sure of the 2 Armstrong record times. Do you mean full EPO 2000 Armstrond vs Pantani and the stage Virenque won?
Well, the 2000 stage had big headwinds above the treeline, on the other hand we know due to the Hamilton book they went gungho from the forest if I remember correctly.
The Virenque win stage was quite simular to this years stage,
with a favourable wind the last K's.
So, an equal time in kinda simular conditions to the best known blooddoper since mankind. Yep, I would defend that too.
Not only that, when u compare the climbing conditions with 1994 it is not a surprise those guys had a real tailwind back then.
Dr. Maserti said:
Here you are:
From this video at 57 seconds - these are the first flags that are not being waved, blowing very strongly. These is between 16 & 15 km to go.
Below I have the exact point on a map and the direction.
Here
you go:
Fearless Greg Lemond said:
And for the first 6K false flat:
Fearless Greg Lemond said:
* 20.8km: crosswind from the rightside
* 20km: idem dito
* 18.5km: idem dito
* 18km: crosswind from the left
* 17.5km: cross/slightly tailwind from the right
* 15.5km: entering the forest, nullifying windconditions untill the highest part of the forest