AeroPod, PowerPod and Newton

hello, I had to replace my powerpod for a problem with the USB port. Now I have a problem, I hope you can fix it ... practically when I pedal downhill it signals over 500 watts of power. How is it possible? What's the reason?

I am attaching the calibration and the last exit where you can clearly see the problem.

Greetings see you soon.

This has nothing to do with your replacement PowerPod

What I suspect is that, when you descended the second hill, where watts are high, you went into a more aero position.

Your CdA aero setting is .36. When you are more aero your CdA drops, and you go faster. PP does not know you change position, and it attributes your higher speed to more watts. Thus, high watts in a tuck

When I adjusted your CdA to 0.3, your downhill watts returned to normal.

When you descend, if you don't pedal PP will be fine. If you pedal but maintain your normal position, your PP will be fine. But if you pedal on a downhill and go into a more aero position, PP will read high.

Ride file with CdA = 0.3 is attached.

thanks jhon for the timely reply. I do not say that I have any problems with the Powerpod but I think it is not correctly positioned. say that for him the slope is -4 indeed that -7 could be there this error if placed badly? I hope I explained myself. I'm waiting for news. Federico

Please post an image showing how your PowerPod is mounted.

could it be that it is still some degree positioned upward? let me know if the photos are ok. I look forward to hearing from you.


Federico.

Is your combo mount made from plastic? Who makes the mount? How is it attached to your bike?

Please post images of your mount, without the Garmin attached. I would like to get a precise idea of how it connects to the bike.

hi john the hard plastic thank you support and is firmly fixed to the handlebar to prevent it from moving. the lower part is made of metal and the screw is as tight as possible for the same reason. your Italian colleague some time ago told me to put the writing parallel to the ground. I noticed with a bubble that the writing is tending upwards, this could offset the slope downhill?

I am very concerned that this mount, even though made of hard plastic, has flex in it. If it vibrates during your ride, this will cause problems for PowerPod.

If, when you push down on the mount, it flexes AT ALL, then it is not stiff enough.

I confirm that the frame does not flex I did several tests. I noticed that the writing is not parallel to the ground. I could try to put it parallel, recalibrate and see what happens. what do you say?

Yes, please try that.

hello John, exit made, the result seemed improved but it was not so. Question: the wind scaling which values should have ?? because in this calibration it went to 2.8 instead of 2.1 of the previous calibration.

I'm waiting for your news, and even if you have to do new tests.
See you soon.

hello john today I recalibrated the Powerpod after having dismantled and reassured everything.
I am attaching the calibration and also a ride that I did to return home.
it seemed strange to me to do 300 or a peak of 500 watts. I attach everything to you.
john sorry, could you tell me how this second calibration looks like you?

FedeSp wrote: ↑Fri May 04, 2018 6:46 am hello john today I recalibrated the Powerpod after having dismantled and reassured everything.
I am attaching the calibration and also a ride that I did to return home.
it seemed strange to me to do 300 or a peak of 500 watts.
iBike_05_04_2018_0932_4_km_CalRide.ibrI attach everything to you.iBike_05_04_2018_0932_4_km_CalRide.ibr


john sorry, could you tell me how this second calibration looks like you?

Your post-cal ride looks fine!