Power Data Estimates for the climbing stages

[Red Rick]

28'47" for the last 9 km. You are welcome.

Thanks, so I get VAM= 1692, which translates to 5,9 W/kg very roughly.

I probably did something wrong

Edit, there is up to 1km of flat in that part though, so power output was likely higher

 

[ralphbert]

Twitter is reporting 412w for contador, 6.1w/kg. Flying. Old school.

 

[Netserk]

https://twitter.com/ammattipyoraily/status/510862380038127617/photo/1

#LaVuelta, Stage 20. Puerto de Ancares (11.85 km, 9.49 %, 1124 m)

Contador: 38'50''

DrF: 5.89 W/kg

Will be interesting to see the numbers for the penultimate climb too.

 

[LaFlorecita]

11.85km @ 9.49%

5.9 W/kg

cleans

Edit: beaten by Netserk

 

[hrotha]

That looked crazier on my screen but I suppose the numbers don't lie.

 

[Red Rick]

Somethings wrong, everybody is cleanzzz

Super irregular climb though, and Sky didn't pull full throttle for very long

 

[D-Queued]

11.85km @ 9.49%

5.9 W/kg

cleans

Edit: beaten by Netserk

*On an MTB trail.

Dave.

 

[roundabout]

https://twitter.com/ammattipyoraily/status/510862380038127617/photo/1

#LaVuelta, Stage 20. Puerto de Ancares (11.85 km, 9.49 %, 1124 m)

Contador: 38'50''

DrF: 5.89 W/kg

Will be interesting to see the numbers for the penultimate climb too.

It was not a regular climb.

But then again Contador was also drafting for approximately 95% of the climb.

 

[TailWindHome]

Maybe the climb needs recalibrated.

 

[ralphbert]

Must have had a head wind

 

[D-Queued]

Must have had a head wind

... gravel & chip seal road

Dave.

 

[Ferminal]

Sub-40' Alpe isn't slow.

 

[Fearless Greg Lemond]

But then again Contador was also drafting for approximately 95% of the climb.

True, but isnt drafting only important above 20 k/h?

 

[roundabout]

True, but isnt drafting only important above 20 k/h?

Even at 20 km/h the saving from drafting just a single rider is roughly 20 watts which is not an unimportant number

 

[MBotero]

https://twitter.com/ammattipyoraily/status/510862380038127617/photo/1

#LaVuelta, Stage 20. Puerto de Ancares (11.85 km, 9.49 %, 1124 m)

Contador: 38'50''

DrF: 5.89 W/kg

Will be interesting to see the numbers for the penultimate climb too.

So they were not going as fast as everybody thought.With these numbers,Froome and Contador wouldn't stand a chance against Nibali in TDF,a Nibali who was better than Froome 2013.

 

[LaFlorecita]

So they were not going as fast as everybody thought.With these numbers,Froome and Contador wouldn't stand a chance against Nibali in TDF,a Nibali who was better than Froome 2013.

Duh. A rider in the shape of his life vs two riders coming back from injury

 

[DFA123]

So they were not going as fast as everybody thought.With these numbers,Froome and Contador wouldn't stand a chance against Nibali in TDF,a Nibali who was better than Froome 2013.

There was no climb like this in the TdF though to compare with. Average W/Kg will usually be lower on a climb that has loads of long sections above 12%, because riders will go way over threshold on these and then need to recover.

 

[GoodTimes]

Even at 20 km/h the saving from drafting just a single rider is roughly 20 watts which is not an unimportant number

Where does this come from? This number seems high to me. I would expect more like 3-5 watts savings, or about 1% of total effort. Not negligible, but a lot less than your value.

Coincidentally, for the climb in question, Contador's time up the climb was about 1% faster than froome's.

 

[Race Radio]

So they were not going as fast as everybody thought.With these numbers,Froome and Contador wouldn't stand a chance against Nibali in TDF,a Nibali who was better than Froome 2013.

Hard to say. Perhaps, but we are lacking the data points for long climbs from the Tour. Hopefully Veetoo will do a comparison. Veloclinic has

It does appear Horner, if in the same shape as last year, would have done very well. I think these may be a little off depending on Horner and Contador's weight.

 

[Bumeington]

Where does this come from? This number seems high to me. I would expect more like 3-5 watts savings, or about 1% of total effort. Not negligible, but a lot less than your value.

Coincidentally, for the climb in question, Contador's time up the climb was about 1% faster than froome's.

I make it more like 8W;

P_air = 0.5*rho*cdA*v^3 = 0.5*1*0.35*(20/3.6)^3 ~ 30W
So drafting behind someone 0.75*30W ~22W

Anyhow, Contador wasn't getting the full draft standing the whole way up - on yesterday's climb though Contador would've made big savings on the almost flat bit before the final kilometre where Froome was still drilling to distance Valverde. Waving hands I would guess their performances yesterday are roughly equal watts wise

 

[hrotha]

That looks like Nibali wouldn't have done too well in the climbs favoured and abused by the Vuelta, but it's really hard to compare, as the Tour had climbs that were similar in how long it took to climb them, but not much else.

 

[red_flanders]

Hard to say. Perhaps, but we are lacking the data points for long climbs from the Tour. Hopefully Veetoo will do a comparison. Veloclinic has

It does appear Horner, if in the same shape as last year, would have done very well. I think these may be a little off depending on Horner and Contador's weight.

What is represented by the x axis of this chart? Minutes? Thx.

 

[Race Radio]

What is represented by the x axis of this chart? Minutes? Thx.

Yes, duration of climb in minutes.

http://veloclinic.tumblr.com/post/97430402418/would-defending-vuelta-champ-horner-have-been-a

While it does not show on that chart it also appears that Valverde was slower then he was at Last years Vuelta. It is also challenging as I have not seen an accurate weight for Contador. Not sure what Mike used for him or Horner as his 40min + w/kg from last year seems low.

 

[jens_attacks]

Average W/Kg will usually be lower on a climb that has loads of long sections above 12%, because riders will go way over threshold on these and then need to recover.

great post
yep, that's why all the watts estimations for ancares were way below expectations. same thing on similar monsters: see gibo-piepoli at only 6.1 w/kg on zoncolan or pantani doing only 6.2 w/kg on mortirolo

from the gaps on ancares i think it was an absolutely insane and vicious fast climb for alberto and froome. we'll see in next years when pan do zarco-ancares will be used i guess.

 

[Netserk]

It does appear Horner, if in the same shape as last year, would have done very well. I think these may be a little off depending on Horner and Contador's weight.

While it does not show on that chart it also appears that Valverde was slower then he was at Last years Vuelta. It is also challenging as I have not seen an accurate weight for Contador. Not sure what Mike used for him or Horner as his 40min + w/kg from last year seems low.

The graph is with normalized weight(, CdA and altitude), which is the best way to do it if you are going to compare different riders.

EDIT: However I will say that pVAM/whatever was used to measure their efforts clearly underestimated Angliru (and Ancares) because of the irregularity.