Originally Posted by
ThermionicScott
First, we need to define terms. Are you asking about the rolling resistance of the tires themselves, or the total frictional losses with a human-shaped bag of meat on the saddle?
This makes me wonder if there is a "kitchen table science" way to measure physiological energy produced, since you'd need to know that instead of/addition to power meter measurements.
With C6H12O6 + 6O2 → 6CO2 + 6H2O (glucose + oxygen -> carbon dioxide + water) for aerobic effort, anyone know precisely where all the water goes? I'm thinking respiration mostly, or a definable percentage of it to define a relation with energy. Then are there enough of the "6H2O" respired to be able to measure? Any biologists out there that have done the math?
You'd have to account for perspiration also but surely you could collect it and weigh it, for a few rides anyway.