Power way off

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blp
Posts: 164
Joined: Mon Mar 26, 2012 12:06 am
Location: Vancouver, BC, Canada
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Power way off

Post by blp »

During today's ride power reading way off - too low. I suspected the inclination was off too. This is reflected in Isaac.

I did a Cal Ride last week and tweaked a bit, tire diameter and bike weight, and uploaded to the Newton 6.

Tried repairing the tilt of today's ride, but got a similar result.

As well as the suspicious file, I have uploaded a similar ride from a couple of weeks ago and the most recent Cal Ride as well.

Did I mess up the calibration?
Attachments
iBike_09_10_2016_0945_66_km_HiDef.ibr
Today's suspect file
(1.48 MiB) Downloaded 293 times
iBike_09_04_2016_1129_53_km_HiDef.ibr
Similar
(1.63 MiB) Downloaded 294 times
iBike_09_04_2016_1120_3_km_CalRide.ibr
Cal Ride
(104.16 KiB) Downloaded 297 times
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Russ
Posts: 370
Joined: Sun Feb 10, 2008 4:08 pm

Re: Power way off

Post by Russ »

Hello blp,

See anything wrong with this?
CdA: 0.344 m^2; Crr: -0.0195

This is the CdA, Crr from your "suspect file". As far as I know there is no such thing as a negative Crr (yet) but future tech? :D

I arbitrarily set your Crr to .004 and things looked more normal, go to your old profile and see what your Crr was and place that value into the profile, check your Cda while there I guess would be good, or just look at your old good ride file for those.

Hope this helps,
Russ
blp
Posts: 164
Joined: Mon Mar 26, 2012 12:06 am
Location: Vancouver, BC, Canada
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Re: Power way off

Post by blp »

My magnetic levitation tires.
blp
Posts: 164
Joined: Mon Mar 26, 2012 12:06 am
Location: Vancouver, BC, Canada
Contact:

Re: Power way off

Post by blp »

How do I place the correct Crr (.00441) into the profile?
blp
Posts: 164
Joined: Mon Mar 26, 2012 12:06 am
Location: Vancouver, BC, Canada
Contact:

Re: Power way off

Post by blp »

I think I found how...

Device > Send profile to Newton > the tweaked Crr file.

Thanks
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