Your training has been going well.
You plan to do a pursuit today. Yesterday you did a pursuit at 12.5
m/s at a cadence of 112 with an air density of 1.20 kg/m3. Today you think you can
do as well, but the air density is 1.29 kg/m3. Yesterday's data:
Recommended Gear
| Closest Gear |
51x16 |
|
| Gear Inch, Closest |
84.2 |
inch |
| Rollout, Closest |
6.719 |
m |
| Maximum Speed |
12.5 |
m/s |
| Wheel Diameter |
671 |
mm |
| Desired Gear Inch |
83.9 |
inch |
| Desired Rollout |
6.696 |
m |
| Frontal Area |
0.5 |
m2 |
| Coefficient Wind Drag |
0.5 |
dimensionless |
| Air Density |
1.2 |
kg/m3 |
| Weight |
75. |
kg |
| Coefficient of Rolling |
0.004 |
dimensionless |
| Effective Stroke |
70. |
degree |
| Grade |
0. |
decimal |
| Wind Resistance |
23.4 |
kg m/s2 |
| Rolling Resistance |
2.9 |
kg m/s2 |
| Slope Force |
0.0 |
kg m/s2 |
| Crank Length |
165. |
mm |
| Maximum Cadence |
112. |
rev/min |
| Pedal Speed |
1.9 |
m/s |
| Average Pedal Force |
170. |
kg m/s2 |
| Effective Pedal Force |
438. |
kg m/s2 |
| Power |
330. |
watts |
Notice that Power was 330 watts yesterday. For the
same watts today, under today's conditions, you can estimate your speed
using Speed, Given Power which estimates
speed today at 12.22 m/s.
Speed For Given Power
| Speed For These Parameters |
12.22 |
m/s |
| Power |
330 |
watts |
| Frontal Area |
0.5 |
m2 |
| Coefficient Wind Drag |
0.5 |
Dimensionless |
| Air Density |
1.29 |
kg/m3 |
| Weight Rider & Bike |
75 |
kg |
| Coefficient of Rolling |
0.004 |
Dimensionless |
| Slope of Hill |
0. |
decimal |
Today's suggested gear selection, based on yesterday's
power output and today's Air Density, is one gear lower, a 50x16 instead
of yesterday's 51x16.
Recommended Gear
| Closest Gear |
50x16 |
|
| Gear Inch, Closest |
82.6 |
inch |
| Rollout, Closest |
6.588 |
m |
| Maximum Speed |
12.22 |
m/s |
| Wheel Diameter |
671 |
mm |
| Desired Gear Inch |
82.0 |
inch |
| Desired Rollout |
6.546 |
m |
| Frontal Area |
0.5 |
m2 |
| Coefficient Wind Drag |
0.5 |
dimensionless |
| Air Density |
1.29 |
kg/m3 |
| Weight |
75. |
kg |
| Coefficient of Rolling |
0.004 |
dimensionless |
| Effective Stroke |
70. |
degree |
| Grade |
0. |
decimal |
| Wind Resistance |
24.1 |
kg m/s2 |
| Rolling Resistance |
2.9 |
kg m/s2 |
| Slope Force |
0.0 |
kg m/s2 |
| Crank Length |
165. |
mm |
| Maximum Cadence |
112. |
rev/min |
| Pedal Speed |
1.9 |
m/s |
| Average Pedal Force |
171. |
kg m/s2 |
| Effective Pedal Force |
439. |
kg m/s2 |
| Power |
330. |
watts |
|
