Strange Readings

[dabaracus]

Common issue I know but i have just moved my iBike Pro to my second bike and with a new speed/cadence sensor. I did a cal ride this morning and a 30km ride straight after, i havent done the coastdowns as there was too much traffic around. I found that for most of the ride, except when the iBike showed a gradient of greater than 1.5% i was showing 0 watts. Showing an average of 33.7 Watts for the entire ride. Have i stuffed something up? the speed and cadence looked about right for the exertion but the wattage was very low

Could someone please assist

[Todj]

I'm no expert, but I did notice that the Crr on the 30km file shows -0.0130 ie somehow this has been recorded as a negative figure. This has meant that your Rolling Resistance watts are shown as -99, whereas they probably should be about +40.

A more likely Crr would be circa 0.0050

Another calibration run is needed I'd suggest.

[dabaracus]

Thanks Richard, will try another cal ride. I tweaked the CRR to 0.0050 and the wattage returned to what about what i expected.