Large difference in readings Newton to Powertap

[smeagolsmy]

Hi, I did a ride yesterday, and on looking at the ride file, noticed a big difference between the Newton figures, and the Powertap figures, can you spot any reason why? I will check the calibration of the Powertap next ride, but the ave power figure for the ride from the Newton at 117w seems pretty low?

[Velocomp]

Nice ride!

Looks like your wind sensor became blocked; notice the severe "icicles" between hour 1 and 4:30. Rain?

I fixed this with Tools/Repair ride for blocked wind sensor.

Also: either your PT is off or your Newton settings are wrong. I fixed the profile so they would be close for this ride; you should check with another ride after you're sure your PT is properly calibrated...