Route analysis before and after

[Toscana]

Can someone explain to me why when I do a route analysis and accept it the Power changes dramatically? Not sure what could cause this
Thank you

[Velocomp]

Please post a ride file and we will help you understand what is happening.

[still-chasing]

I wonder this myself. The "analyze route" after value is different from "Show Tilt plot" value. I'm confused which one to accept.

[Velocomp]

Most of your ride shows a tail wind. Though tail winds are typical on ascents (it's really tough to measure wind at low bike speeds) your fast downhill shows a tail wind too.

I suggest you do a new Cal Ride. This should help minimize the differences pre/post analysis.

[still-chasing]

Thanks John. I will do another Cal ride as you suggest. Please take a look at this ride I did 2 days before the one I posted. The variance in power numbers after analyze route and tilt plot seem closer using the same profile. sorry, for the bother. Just don't know what to look at for errors.

[still-chasing]

Hi John. Here's another ride I did today. New cal ride as suggested. I did tilt cal just in case and wind cal before the ride. During the ride, I have the "dynamic wind" on display. It's showing negative wind numbers most of the time even though I feel I'm riding on a head wind. Even on descent, it is showing negative wind when I think it should show plus wind due to pressure on descent. Is it possible that the wind sensor in my Newton is faulty? or, am I misunderstanding the graphs in Isaac. Also, the "analyze route" "after" value is different from "show tilt" "after" value. I notice this on most of my downloaded rides (analyze route after value is different from show tilt after value). Sorry, just wanted to know if I should have my Newton re-checked.