Originally Posted by
acidfast7
yeah, my commute is roughly flat 25km RT and all it does is bounce up and down between 0 and 250 or so.
i'm just more curious from a nutritional standpoint what i'm burning. i guess 300±100 kcal.
At total load of 195 lbs and speed of 18.64 mph:
Assume on the easy end:
Crr = 0.0033
CdA = 0.33
Tailwind = 5mph
Grade = -0.3%
Power = 67.7 watts, energy = 1.1*67.7*60*40 = 179 kcal
Assume on the hard end:
Crr = 0.0038
CdA = 0.38
Headwind = 5mph
Grade = +0.3%
Power = 277.9 watts, energy = 1.1*277.9*60*40 = 734 kcal
So, calories burned = 457±278
(Also assuming 95% efficiency in bicycle)