Drag factor is a measure of fan load. The Performance Monitor self-calibrates on the RowErg and SkiErg by recalculating the drag factor on every pull, and the BikeErg needs to be calibrated from time to time. On all our ergs, you get a true measure of your effort regardless of the damper setting or changing conditions. You can adjust the drag factor by moving the damper lever on the flywheel. (Learn more about damper setting and drag factor)
To view drag factor on the PM:
- On the Main Menu, select More Options.
- Select Display Drag Factor.
- Begin rowing, skiing or riding. The PM will display the drag factor after a few seconds.
A brand new RowErg will have a drag factor of 90 or less at a damper setting of 1 and 200 or more at a damper setting of 10.
A brand new SkiErg will have a drag factor of 55 or less at a damper setting of 1 and 150 or more at a damper setting of 10.
A brand new BikeErg will have a drag factor of 45 or less at a damper setting of 1 and 225 or more at a damper setting of 10.
These drag factor ranges for new ergs assumes that the machines are at sea level. Elevation has a large impact on air density and therefore drag factor. The monitor will accurately detect environmental changes and adjust the drag factor to assure accurate data.