Some people feel his weight is closer to 62 kg. Plus, these efforts are after a long stage- where you are easily 1kg or more lighter, due to fluid loss. Lastly, these efforts are nearly 3 weeks in a grand tour, where a body will produce 5-10% less power due to fatigue, reduced RBCs, etc. So, a fresh 6.1 w/kg climber (like the genetic freak - Lemond) was 5.7 w/kg climb 3 weeks into a grand tour. Cycling continues to do what it knows best...
Here's a good chart that shows the power output for the final climbs of grand tours- when fatigue / reduced output would have set in from a non-doping competitor. Lemond is the only athlete in this chart who has never been implicated of doping.
http://www.sportsscientists.com/...power-estimates.html Note that for all years, the power output has been "normalized" by expressing it relative to body weight. This is important, because Indurain, for example, was much larger than Pantani. Pantani at a power output of 350W was thus the equivalent of Indurain riding at around 500W. So, to compare them, one either has to express power output per kilogram, or express it for a standard weight. I've taken the approach of expressing it relative to body weight. I'll post more on the effect of body weight on performance in the mountains once we get closer to Mont Ventoux.
Also, just as an addendum to the post in response to a comment by Will below, I must make the point that all the ABSOLUTE power outputs were calculated using the rider mass PLUS the mass of the equipment (bike and gear, assumed at 9kg for calculations), and then expressed relative to rider weight (see footnote).
It makes for some interesting reading - Greg Lemond averaged 5.7 W/kg on the final climbs during both his Tour wins. Then Indurain started off with an average power output of 5.3 W/kg, followed by 4.91 W/kg, and then it began to climb, so much so that when Indurain won his fifth Tour in 1995, his average power output on the final climbs of the mountain stages was an incredible 6.35 W/kg. (Just to labour the point - if you want to work out the ABSOLUTE power output for each rider, just multiply the power I've shown by the rider's mass. For Indurain, multiply by 80kg and you get a value of 508W)
That high power output was maintained for the next four years, Riis averaged 6.47 W/kg, Ullrich 6.33 W/kg, and then Marco Pantani set the 'record' when he averaged 6.63 W/kg during the 1998 Tour.
jackmott wrote:
That implies about 6.1w/kg if it were a long climb.
which is about what he did on long climbs
and about what people could do on long climbs in the before time, the long long ago.
echappist wrote:
ask and you shall receive. 
425W for 16 minutes. I have no idea what this portends. One thing i will note though, is that Horner put up 435W when he won on Sierra Road in the 2011 Tour of California, except that was on stage 4, the first challenging stage of an one-week race as opposed to a Grant Tour.
for the record, i find veloclinic and a bunch of other places (cyclingnews clinic) to be somewhat irresponsible in their assessment as they just pretend the analysis (or rather, guestimate) is accurate when they are not. That, of course, does not mean what Horner did was clean, just that there's quite a bit of ignorance out there.
