Negative fric value and low crr

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albafar
Posts: 80
Joined: Mon Jul 27, 2015 1:10 pm

Negative fric value and low crr

Post by albafar »

I just did a short but rather hard interval training with a hill round tour. Back home I checked calibration for the first time since summer. When I try to accept the suggested changes to the profile I get the message that the friction value is out of range (it suggests a change from 2,025 -> -1,059) Looks weird to me :?
Also the crr value at -0,0070 puzzles me. Comments and suggestions are welcome.
Attachments
iBike_03_31_2017_1610_27_km_HiDef.ibr
(691.04 KiB) Downloaded 282 times
Velocomp
Velocomp CEO
Posts: 8016
Joined: Fri Jan 11, 2008 8:43 am

Re: Negative fric value and low crr

Post by Velocomp »

Corrected ride file and profile are attached.

Please download this ride again, and do NOT perform a "Check Calibration" on the ride. Instead, just post the unadjusted ride file.

Also, if you have a ride file prior to the one in question, please post that ride file, too.

PS: Nice PowerStroke!
Attachments
DeRosa.ibp
(752 Bytes) Downloaded 250 times
De Rosa JRH_03_31_2017_1610_27_km_HiDef.ibr
(573.57 KiB) Downloaded 298 times
John Hamann
albafar
Posts: 80
Joined: Mon Jul 27, 2015 1:10 pm

Re: Negative fric value and low crr

Post by albafar »

Thanks John,
Just to be certain I understand you correctly:I download the profile and send it to the PowerPod. Go for another ride and send you the new ride file together with another recent file - correct?
Velocomp
Velocomp CEO
Posts: 8016
Joined: Fri Jan 11, 2008 8:43 am

Re: Negative fric value and low crr

Post by Velocomp »

Yes, that will do just fine!
John Hamann
albafar
Posts: 80
Joined: Mon Jul 27, 2015 1:10 pm

Re: Negative fric value and low crr

Post by albafar »

OK then - here comes todays file with the updated profile and an additional ride from last week (commuting so it includes a lot of stop&go.

Please don't get too impressed by todays rather smooth Powerstroke - it was a recovery ride ;-)
Attachments
iBike_03_28_2017_1604_22_km_HiDef.ibr
(495.41 KiB) Downloaded 281 times
iBike_04_02_2017_1511_27_km_2HiDef.ibr
(799.85 KiB) Downloaded 283 times
Velocomp
Velocomp CEO
Posts: 8016
Joined: Fri Jan 11, 2008 8:43 am

Re: Negative fric value and low crr

Post by Velocomp »

Your 4/2 ride looks fine!
John Hamann
albafar
Posts: 80
Joined: Mon Jul 27, 2015 1:10 pm

Re: Negative fric value and low crr

Post by albafar »

Many thanks John - I will stick with that then!
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