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Power when coasting on second bike?

Posted: Thu Apr 13, 2017 4:39 am
by MjL
Hi
I've successfully paired my Powerpod to a second bike and adjusted for the differing weights but the power reads too high , even reading positive watts when not pedalling .
I have now completed four rides hoping the unit would recalibrate itself but that has not happened as yet.
Any advice would be welcomed

Re: Power when coasting on second bike?

Posted: Thu Apr 13, 2017 11:11 am
by Velocomp
Did you create separate profiles for each bike?

Did you do an O&B calibration for each bike?

Please post .ibr ride files from each bike and we will figure out what is going on.

Re: Power when coasting on second bike?

Posted: Fri Apr 14, 2017 1:33 pm
by MjL
iBike_04_14_2017_0748_63_Miles.ibr
(732.9 KiB) Downloaded 266 times
Golden Cheetah ride.csv
(1.63 MiB) Downloaded 240 times
iBike_04_02_2017_0830_74_Miles.ibr
Second bike
(892.84 KiB) Downloaded 246 times
John hello unfortunately I seem to have failed to successfully save all of my March rides on my Winter bike which makes your task futile I assume.
I have uploaded two ride files on the second bike where I see watts displayed on my head unit even when not pedalling , plus a Golden Cheetah file from a March ride which pay show power data but sadly no input compariosons I know

Each bike has a separate profile and their own speed and cadence sensors - profile 1 and profile 4 , both are road bikes.
And no , I have not carried out a O&B ride for either of the bikes/profiles

Thank you for your prompt attendance

Re: Power when coasting on second bike?

Posted: Sun Apr 16, 2017 2:37 pm
by Velocomp
The two ride files you attached have the same speed sensor ID, and their corrected profiles are nearly identical. Are these from the same bike?

I have attached a corrected profile from your 74 mile ride.

Re: Power when coasting on second bike?

Posted: Sun Apr 16, 2017 3:13 pm
by MjL
iBike_04_16_2017_0827_23_Miles.ibr
(301.9 KiB) Downloaded 254 times
John thank you for taking the time.
I have opened Isaac and sent the new "tweeked" profile to my Powerpod and will let you know if that solves the problem.
I am assuming that is all I need do.
Yes both rides were on second bike due to my stupidity.
Todays "pre-tweeked" ride file is above.
Thanks again

Re: Power when coasting on second bike?

Posted: Wed Apr 19, 2017 10:30 am
by MjL
iBike_04_19_2017_1225_32_Miles.ibr
(380.74 KiB) Downloaded 289 times
iBike_04_19_2017_0942_34_Miles.ibr
(392.16 KiB) Downloaded 279 times
John hi , two ride files above were today , post your tweeking. The first goes through an early calibration which skews the data.
they showed and improvement form earlier files in that power shown whilst coasting was lower but still there.
Thanks
MjL

Re: Power when coasting on second bike?

Posted: Fri Apr 21, 2017 5:43 pm
by Velocomp
Since there is no cadence data in your ride files I cannot tell where you were coasting.

There are a few places where, on downhills, your watts drop nearly to zero, but not exactly to zero. This is OK; any minor variation in ride position can cause this, and even when watts are not exactly zero, they are so small that they do not affect your ride stats.