10. ANSWER TO COURSE MEASUREMENT EXAMPLE
Pre measurement calibration |
Post measurement calibration |
|||||||
Start | End | Increment | Start | End | Increment | |||
Ride 1 | 04000 | 09610 | 5610 | Ride 1 | 51000 | 56612.5 | 5612.5 | |
Ride 2 | 09610 | 15218 | 5608 | Ride 2 | 56612.5 | 62221.5 | 5609 | |
Ride 3 | 15218 | 20827 | 5609 | Ride 3 | 62221.5 | 67833 | 5611.5 | |
Ride 4 | 20827 | 26434 | 5607 | Ride 4 | 67833 | 73441 | 5608 | |
Average | 5608.5 | Average | 5610.25 |
Pre measurement calibration constant = 5608.5*1.001/0.49955 = 11238 counts/km
Post measurement calibration constant = 5610.25*1.001/0.49955 = 11242 counts/km
Use the largest constant in order to ensure the course is not short, Constant of the day = 11242 counts/km
Lap start = 34871
Lap end = 52998
Count increment = 52998 - 34871 + 100000 = 118127. Lap distance= 118127/11242 = 10.5077 km
2 laps = 21.0153 km. Required distance for half marathon =21.0975km, so Start will be 21.0975-21.0153 = 82.2 m from the finish, The course will be 2 complete laps plus 82.2 m.