Bike Power

calculation of energy consumption under various bicycling conditions
(based on a C-program by Ken Roberts which I found here)

kph	F_kg	P_a	P_r	P_t	P	hp	heat	BM	C	Cal/hr	Cal/km
5.0	0.5	1	6	0	7	0.01	21	112	139	120	24
10.0	0.6	6	12	1	18	0.02	55	112	185	159	16
15.0	0.9	19	17	2	39	0.05	116	112	267	229	15
20.0	1.3	46	23	4	72	0.10	218	112	403	346	17
25.0	1.7	89	29	6	124	0.17	375	112	612	526	21
30.0	2.3	155	35	10	199	0.27	600	112	911	784	26
35.0	3.0	245	40	15	301	0.40	907	112	1320	1135	32
40.0	3.8	366	46	22	434	0.58	1309	112	1855	1595	40
45.0	4.7	521	52	30	603	0.81	1820	112	2536	2180	48
50.0	5.7	715	58	41	814	1.09	2454	112	3380	2906	58

Legend:
kph	= velocity [kilometers per hour]
F_kg	= total force resisting forward motion [kilograms]
P_a	= power output to overcome air resistance [Watts]
P_r	= power output to overcome rolling friction [Watts]
P_g	= power output to climb grade [Watts]
P_t	= power loss due to drivetrain inefficiency [Watts]
P	= P_a + P_r + P_g = total power output [Watts]
hp	= total power output [horsepower]
heat	= C - (P + BM) = power wasted due to human inefficiency [Watts]
BM	= basal metabolism [Watts]
C	= total power consumption [Watts := Joules per second]
Cal/hr	= total power consumption [dietary Calories per hour := kcal/h]
Cal/km	= total power consumption [dietary Calories per kilometer := cal/m]

grade of hill = %	headwind = km/h
weight: cyclist + machine =	total 90 kg
rolling friction coeff = (race:0.004...MB:0.012)	BM rate = W/kg (2312 kcal/day)
air resistance coeff = (, )	(racing crouch:0.167...standing:0.356)
efficiency: transmission = %	human = %

number of table entries:	increment in table:
give start :