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Power Data Estimates for the climbing stages

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26 May 2017 09:25

high pace from the start, so not much in the tank on the final climb
User avatar Dekker_Tifosi
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26 May 2017 09:31

Yeah especially Pontives will be very low. Guessing it would be around 5.3 or in that area.

For reference, Valparola last year, which was properly raced, was in the 5.6 area. And when Quintana recked Froome on la Toussuire, that was also around 5.6, but that was after a very long waiting game.
Kwibus wrote:So much quesions they have. Answers they will never get.
So why questions? If no answers?
-Kwibus, one of the great philosophers of the 21st century
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29 May 2017 18:59

Well I calculated some numbers for Blockhauss but did not find anything suspicious on any of the riders to be honest.

Quintana:
58 kg
Time: 40:15
Length: 13.65 km
Elevation Change: 1141 m
Gradient: 8.4%
Power output: 6-6.2 watts/kg (range depends on wind. 6 w/kg with no wind and 6.2 w/kg with some head wind)
VAM: 6 watts/kg

Dumoulin:
69 kg
Time: 40:39
Length: 13.65 km
Elevation Change: 1141 m
Gradient: 8.4%
Power output: 5.9-6.0 watts/kg (range depends on wind. 6 w/kg with no wind and 6.2 w/kg with some head wind)
VAM: 5.94 watts/kg

Other numbers:
Mechanical loss: 3%
Air density: 1.054 kg/m3
Bike weight: 6.8 kg
Other weight: 0.5 kg

Before anybody ask me any questions, the VAM is an empirical calculation using the Ferrari formula while the other one uses the conservation of energy equation with some assumptions made.
User avatar Escarabajo
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Re:

05 Jun 2017 20:40

Escarabajo wrote:Well I calculated some numbers for Blockhauss but did not find anything suspicious on any of the riders to be honest.

Quintana:
58 kg
Time: 40:15
Length: 13.65 km
Elevation Change: 1141 m
Gradient: 8.4%
Power output: 6-6.2 watts/kg (range depends on wind. 6 w/kg with no wind and 6.2 w/kg with some head wind)
VAM: 6 watts/kg

Dumoulin:
69 kg
Time: 40:39
Length: 13.65 km
Elevation Change: 1141 m
Gradient: 8.4%
Power output: 5.9-6.0 watts/kg (range depends on wind. 6 w/kg with no wind and 6.2 w/kg with some head wind)
VAM: 5.94 watts/kg

Other numbers:
Mechanical loss: 3%
Air density: 1.054 kg/m3
Bike weight: 6.8 kg
Other weight: 0.5 kg

Before anybody ask me any questions, the VAM is an empirical calculation using the Ferrari formula while the other one uses the conservation of energy equation with some assumptions made.

quintana's weight is 58? I can't beleive that he has the same weight as porte. i thought his weight was something around 55 kg
portugal11
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06 Jun 2017 18:13

Weight for these riders is a mistery. It changes from time to time. This is the one they have reported in the ProcyclingStat site for the Giro.
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10 Jun 2017 11:05

No numbers from yesterday?
Kwibus wrote:So much quesions they have. Answers they will never get.
So why questions? If no answers?
-Kwibus, one of the great philosophers of the 21st century
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10 Jun 2017 11:08

Rough road surface makes estimations less accurate, but about or a bit above 6 W/kg for the first four over the top. Mind, it was an easy stage at low altitude, but I also think Richie could have gone up faster if it was a MTF.
Goodbye, Tommeke; thank you for all you have given us!
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10 Jun 2017 11:24

Aru did 6.23 w/kg
portugal11
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10 Jun 2017 13:58

Ok, so not as impressive as the VAM numbers.
Kwibus wrote:So much quesions they have. Answers they will never get.
So why questions? If no answers?
-Kwibus, one of the great philosophers of the 21st century
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05 Jul 2017 15:33

Aru La Planche des Belles Filles ?
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05 Jul 2017 18:17

2 times I've seen thrown around are 16'08 and 16'13". Froome was 16'16 in 2012 and that ascent was ridden harder from the start I think.

Better juice than in 2012 or tailwind lol?
Kwibus wrote:So much quesions they have. Answers they will never get.
So why questions? If no answers?
-Kwibus, one of the great philosophers of the 21st century
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05 Jul 2017 18:19

2012 was ridden with Wiggins in mind. Froome could have gone faster if the train was at his disposal.
Goodbye, Tommeke; thank you for all you have given us!
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Re:

05 Jul 2017 20:06

Netserk wrote:2012 was ridden with Wiggins in mind. Froome could have gone faster if the train was at his disposal.

True enough, though I'd guess that the average ascent time was a bit faster today.
Kwibus wrote:So much quesions they have. Answers they will never get.
So why questions? If no answers?
-Kwibus, one of the great philosophers of the 21st century
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09 Jul 2017 15:44

Sooooo..

Mont du Chat?
Kwibus wrote:So much quesions they have. Answers they will never get.
So why questions? If no answers?
-Kwibus, one of the great philosophers of the 21st century
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Re:

09 Jul 2017 17:33

Red Rick wrote:Sooooo..

Mont du Chat?


I could be wrong but from what I remember it was ridden in roughly 31 minutes, so around 5.94w/kg. The cn live tracker says the climb began 32 minutes before they reached 25km to go, but the 25km is on the downhill section. Note that this obviously doesn't account for wind, altitude, or drafting. Either way, 6w/kg for 30 minutes in early week 2 doesn't ring the alarm bells for me.
Durden93
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09 Jul 2017 17:53

ammattipyöräily‏
@ammattipyoraily
GC favorites 30:40-30:45 on Mont du Chat. ~1:30 slower than Aru at Criterium du Dauphine. #TDF2017
Kwibus wrote:So much quesions they have. Answers they will never get.
So why questions? If no answers?
-Kwibus, one of the great philosophers of the 21st century
User avatar Red Rick
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Re:

09 Jul 2017 18:32

Red Rick wrote:ammattipyöräily‏
@ammattipyoraily
GC favorites 30:40-30:45 on Mont du Chat. ~1:30 slower than Aru at Criterium du Dauphine. #TDF2017

Saw that and forgot about it. Is 15-20 seconds close enough? :D
Durden93
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11 Jul 2017 14:49

Well they have to wait for the leader that wanted to have a cup of coffee!!
User avatar Escarabajo
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13 Jul 2017 19:09

Properly fast today. Bales only a minute down on Pinot in 2014 (when it was the last climb) and faster than Contador 2010, and a whole two minutes faster than the 2012 sky train in a carbon copy stage. Peyresourde as fast as Conti/Rasmussen, and as fast as 2012 Tour and 2013 Vuelta. Mente average, but tough speeds and tough stage.
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14 Jul 2017 10:46

How fast was Bales compared to 2007 (T.Dekker on full blood transfusion enriched EPO blood)?
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