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Pursuit Our two riders are doing a 4000 meter pursuit. Our Standard Rider is using a 28 bladed spoke, 650 wheel. Out Test Rider is using a Specialized 650 tri-spoke. Both riders are using the same disk in back (Ic value estimated). They are identical in all other respects. Which one finishes first? By how much? The Specialized rider will be ahead by 14.8 meters, finishing 1.02 seconds sooner doing a 4:43 pursuit at an average power of 550 watts. Enter data for cases of interest to you. Speeds during pursuit: ![]() Speed difference during the pursuit: ![]() |
| Parameter | Standard Rider | Test Rider | |
| Frontal Area | 0.5 | 0.5 | m2 |
| Coefficient Wind Drag | 0.5 | 0.5 | dimensionless |
| Air Density | 1.226 | 1.226 | kg/m3 |
| Weight Rider | 65.0 | 65.0 | kg |
| Weight Bike | 8.0 | 8.0 | kg |
| Front Wheel | |||
| Weight | 1.179 | 1.207 | kg |
| Ic | 0.0632 | 0.0683 | kg m/s2 |
| Cx0 | 0.0491 | 0.0379 | Dimensionless |
| Radius | 0.308 | 0.308 | m |
| Rear Wheel | |||
| Weight | 1.636 | 1.636 | kg |
| Ic | 0.0865 | 0.0865 | kg m/s2 |
| Cx0 | 0.0361 | 0.0361 | Dimensionless |
| Radius | 0.337 | 0.337 | m |
| Rear Shelter | 25. | 25. | % |
| Power | 550. | 550. | w |
| Coefficient of Rolling | 0.004 | 0.004 | dimensionless |
| Grade | 0.00 | 0.00 | decimal |
| Initial Speed | 0.0 | 0.0 | m/s |