Speed adjustment doesn't apply to distance

[martinkopcik73]

There is an option to "adjust speed from power" but when selected it only adjusts the speed and not the covered distance, which I would expect it should. Speed, time and distance are related, so if speed is modified, distance should as well. If you adjust the speed only, then the result is still not comparable to the same effort on concept2, what was the point. At the same time a simple calculation of average speed x time doesn't match of the distance of the exercise.

[svenmeier]

Good point!

Actually I was already thinking about removing that feature. Do you think the adjusted speed is preferable to the speed measured by the S4?

[martinkopcik73]

I am using that option. It helps when interacting with rowers on Concept2 since it helps to the results at least roughly comparable. But because the distance is not adjusted, I look like a superhuman and my results are distorted.

Martin

On May 18, 2021 1:56:48 PM EDT, Sven Meier @.***> wrote:

Good point!

Actually I was already thinking about removing that feature. Do you think the adjusted speed is preferable to the speed measured by the S4?

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[svenmeier]

Ok then I'll will have to check how to adjust the distance too.

[martinkopcik73]

I thought that we could find a simple adjustment constant k= average adjusted speed x time / WaterRower distance Then Adjusted distance = k * WaterRower distance could be reported for each reported S4 value.

Based on my logs K= ... Oops, I found another bug that even though the adjusted speed was reported and captured in log, the average is not adjusted. I thought I would simply read it out out of log but I could only guestimate.

Another possibility, k= 2:00/ 2:15= 120/135. But I just remembered those from some article so I'm not sure.

Martin

On May 21, 2021 6:12:17 PM EDT, Sven Meier @.***> wrote:

Ok then I'll will have to check how to adjust the distance too.

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[martinkopcik73]

Hi, I found this article. It might be helpful https://www.reddit.com/r/orangetheory/comments/7cp37a/comparison_of_pace_to_wattage_on_the_waterrower/

Martin

On May 21, 2021 6:12:17 PM EDT, Sven Meier @.***> wrote:

Ok then I'll will have to check how to adjust the distance too.

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[svenmeier]

I've found a solution for a distance calculation.

With that I observe a ~10% decrease of speed and distance. Is that what you would expect?

[martinkopcik73]

I have read somewhere what concept2 2:15 effort results in 2:00 on WaterRower. If that is true 135:120=112.5% so in the ballpark you are suggesting. I don't have access to both so I cannot provide data unfortunately.

Martin

On May 28, 2021 1:38:04 PM EDT, Sven Meier @.***> wrote:

I've found a solution for a distance calculation.

With that I observe a ~10% decrease of speed and distance. Is that what you would expect?

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[martinkopcik73]

Hi Sven,

There was an update today and the app keeps crashing when the exercise is started. Just letting you know in case you didn't know yet. Hopefully the attached logs will help you to solve the problem quickly.

Martin