How to compare positions using ibike wth Power Meter
Posted: Fri Sep 18, 2009 4:22 am
How does anyone else use the ibike to compare different positions for Cda?
Do you do a new cal ride for each position set up?
Or do you just keep the profile set and look for changes within a file?
I tried the latter method, but I am finding it difficult to extract a Cda for the different runs, set as laps within a file.
I can use powermeter comparison to see a graphical representation of the change in Cda, so the data is "in there".
Just tryin to figure out how to extract a Cda for a given lap split from the info.
I can read both average SRM power and average Ibike power for a given lap split and so see a watt saving - but how to turn that into CDA?
The ideal would be for the Cda graph on powermeter comparison screen to
1 -have the option to view lap splits
2- Display averages of the cda's being graphed.
In general I am liking the new firmware and software. But there seems to be a lot of ability to look at graphical representations of info but an inability to read this same info as numbers/data. Eyeballing a graph seems an imprecise way to try to quantify drag changes!!!
DMC?
Do you do a new cal ride for each position set up?
Or do you just keep the profile set and look for changes within a file?
I tried the latter method, but I am finding it difficult to extract a Cda for the different runs, set as laps within a file.
I can use powermeter comparison to see a graphical representation of the change in Cda, so the data is "in there".
Just tryin to figure out how to extract a Cda for a given lap split from the info.
I can read both average SRM power and average Ibike power for a given lap split and so see a watt saving - but how to turn that into CDA?
The ideal would be for the Cda graph on powermeter comparison screen to
1 -have the option to view lap splits
2- Display averages of the cda's being graphed.
In general I am liking the new firmware and software. But there seems to be a lot of ability to look at graphical representations of info but an inability to read this same info as numbers/data. Eyeballing a graph seems an imprecise way to try to quantify drag changes!!!
DMC?