EpicriderGMAC said:...425 watts is going to get you going a lot faster for the 77 Kg rider than 360 watts will for the 65 Kg rider in every condition except a steep climb.
As a larger rider I thank you. And thank God not every ride is uphill.
EpicriderGMAC said:...425 watts is going to get you going a lot faster for the 77 Kg rider than 360 watts will for the 65 Kg rider in every condition except a steep climb.
EpicriderGMAC said:It's I believe it has something to do with raw power output....Sven is a bigger guy in the peloton at 77Kg's, so for him to put out 5.5 watts/kilo for an hour is a LOT of power in comparison to a 65 Kg rider. If the two riders punch a similar size hole in the air (Sven is only 5'10'' tall despite his weight), 425 watts is going to get you going a lot faster for the 77 Kg rider than 360 watts will for the 65 Kg rider
EpicriderGMAC said:...
Also, I believe it has something to do with raw power output....Sven is a bigger guy in the peloton at 77Kg's, so for him to put out 5.5 watts/kilo for an hour is a LOT of power in comparison to a 65 Kg rider. If the two riders punch a similar size hole in the air (Sven is only 5'10'' tall despite his weight), 425 watts is going to get you going a lot faster for the 77 Kg rider than 360 watts will for the 65 Kg rider in every condition except a steep climb.
...
Sure but a rough order-of-magnitude calculation on mass(M) and frontal area (A) has it that:acoggan said:That's a pretty big "if", don't you think? After all, height is not the only determinant of frontal area/aerodynamic drag - mass counts as well.
Pelotonium said:Sure but a rough order-of-magnitude calculation on mass(M) and frontal area (A) has it that:
M is proportional to A^(3/2)
or
A = k * M^(2/3), where k is a shape constant.
This is sub-linear, meaning that if you double the rider's mass, you less-than-double his frontal area.
No kidding. Too many people lie. I thought I was powerful and fast, but I'm damn near the bottom of the list!!! Anyone who claims to be >5.4W/kg on that thread I should be reading their names in the newspapers.zaskar said:5.4 is great. Makes me wonder how many of the numbrs are BS in the"whats your FTP" thread.
K50 said:No kidding. Too many people lie. I thought I was powerful and fast, but I'm damn near the bottom of the list!!! Anyone who claims to be >5.4W/kg on that thread I should be reading their names in the newspapers.
Yeah sorry man I didn't mean that.jdc64 said:There is a lot more to bike race than just good numbers. Also, like anything, moving up in the ranks takes time. You have no idea if these people are lieing. I personally take it as an insult to my character. I would not make these accusations just because your upset at being at the bottom.
Ergoman said:...
Other examples: Take a look at the power files from the Tour de Georgia. The wattage these pro riders are putting out is underwhelming. They're averaging maybe 180 watts with NP in the 250 range for the whole ride. Even on the hard climbs wattage doesn't get much over 700 and then only for brief periods. I have to figure that the power meters these guys are using are pretty well set up and calibrated.
Also, was he massive? The only thing I can think of given maybe a slight calibration error is the power it takes if one guy is 55kg vs 80kg.peterpen said:Hmm, not sure which files you're looking at, but John Devine's from Brasstown Bald didn't leave me underwhelmed - averaging 3.8 w/kg for 4.5 hours and then 5.9 w/kg for the last 20m of the race is astounding.
As for your experience on the group ride, I have two questions: what kind of PM was the other rider using? and, given your user name, how are you 'calibrating' your Ergomo?
peterpen said:Hmm, not sure which files you're looking at, but John Devine's from Brasstown Bald didn't leave me underwhelmed - averaging 3.8 w/kg for 4.5 hours and then 5.9 w/kg for the last 20m of the race is astounding.
As for your experience on the group ride, I have two questions: what kind of PM was the other rider using? and, given your user name, how are you 'calibrating' your Ergomo?
Ergoman said:Check all the pro's power files and report back. My point is not that the pros are wimps, but that their power is most likely realistic whereas there are a lot of folks riding around who are satisfied to believe off-the-chart power for reasons known only to them.
Based on your previous "drive-bys" in other threads, I'm sure you know what kind of power meter I use and how I calibrate it.
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