devashish_paul wrote:
The rough math on this is a bigger guy will just generate more heat. I rider going at 250W will generate around 1000W of heat, the guy going at 300W will generate 1200W of heat, so its a question of the rider putting out more watts being able to dissipate a 2x100W lightbulbs of extra heat from the body. From what I see Sam has long arms and long legs, so he may proportionally have a good volume to surface area ratio (it is what makes Kenyans deal with the insane heat that builds up when you run at 2:02 marathon pace).
It may just be Sam's volume to surface area. It is probably not as good as Jan Frodeno, but it is probably pretty good. Generally shorter athletes have superior volume to surface areas. It's just how human proportions shake out. But tall and lanky helps and if you have a short torso relative to wingspan and inseam it helps more (not sure of Sam's torso proportions).
valid point on surface area for cooling surface vs total body mass.
BUT it's more so of how efficiency he is moving as well as his bike efficiency is tops and his run is better then ever.
If he is pedaling at 350 watts but hitting the pedal with 360 watts of muscle work he will beat the others at 350 watts with 400 watts of muscle work. ( the 400 would of course be more energy and heat)
A power meter is measuring outcome of torque not energy in.
People swim and run and bike the same speed but different levels of stress and muscle fatigue and sweat rates.
He is doing everything very well with pace and I think he learned swimming harder ( 45 sec extra sec swim speed) takes his bike away and his run. Where we are seeing huge surges in the swim and bike starts and that is destroying guys race outcomes.
Technique will always last longer then energy production. Improve biomechanics, improve performance.
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