Conditions change:
wheels, air density, speeds. Pick a gear based on expected conditions.
Some times a rider wants to pick a gear based on conditions.
This could be for a fast points race with a new set of wheels. It
could be selection of morning or evening session (most favorable air density)
for a qualifying time. It could be a chainring, cog, wheel diameter
to meet junior gear restrictions. It could be a low gear for a long
climb, a high gear for a fast, downhill.
Sample Output:
Recommended Gear
| Closest Gear |
51x14 |
|
| Gear Inch, Closest |
96.2 |
inch |
| Rollout, Closest |
7.679 |
m |
| Maximum Speed |
16 |
m/s |
| Wheel Diameter |
671 |
mm |
| Desired Gear Inch |
96.2 |
inch |
| Desired Rollout |
7.680 |
m |
| Frontal Area |
0.5 |
m2 |
| Coefficient Wind Drag |
0.5 |
dimensionless |
| Air Density |
1.226 |
kg/m3 |
| Weight |
75. |
kg |
| Coefficient of Rolling |
0.004 |
dimensionless |
| Effective Stroke |
70. |
degree |
| Grade |
0. |
decimal |
| Wind Resistance |
39.2 |
kg m/s2 |
| Rolling Resistance |
2.9 |
kg m/s2 |
| Slope Force |
0.0 |
kg m/s2 |
| Crank Length |
170. |
mm |
| Maximum Cadence |
125. |
rev/min |
| Pedal Speed |
2.2 |
m/s |
| Average Pedal Force |
303. |
kg m/s2 |
| Effective Pedal Force |
780. |
kg m/s2 |
| Power |
675. |
watts |
Speed vs Cadence for Recommended Gear |
