by easterbird » Sun Jul 15, 2012 2:04 pm
Thanks for your forbearance texmurphy,dmcaf and friends of CS. I see that my new Garmin 800 does indeed have steps in the elevation change. It is nowwhere near as smooth a trace at the dead Garmin 305;however, I guess I am stuck with the 800 for now. I am looking into the issues associated with the device as suggested.
I see that the hill settings etc are significant. Is it usual to reset these for every import? Today I noted that these settings had reverted to default from what I used recently(50',0.2,0.2,50.0.01,0.33,.0.33 per what I found in olded discussions of this topic.)
Now please grit you teeth because I have another question on troubleshooting CS values. In ST, today's ride was 38.39 miles with a CS of 42.16 yields a CS/mile of 1.1. I get that. Now in the detail view, when I add up all the individual CS for each hill, that number is 9.02 for the 6 hills identified. How do I get from my simple total of 9.02(adding each individual hill) to CS 42.16 for the ride?
DMCAF wrote in explanation to me awhile back the following:
All the course scores are based off power curves.
The calculations for cycling are pretty simple. I break the course up into grade pairs like (distance, grade). So if you ride a course that has a max of 2% grade, you'll have 3 pairs. (x, 0) (y, 1) (z, 2) where x, y, and z are your distances for those grades. I dump any grade that's less than 0 for cycling. Descents require 0 power to travel.
Then, to get your score, here's the math in pseudocode:
for each grade/distance pair
score += (pair.meters / 1000) * ((.35 * pair.grade) + .1)
So, does that mean there really more hills with the same grade and some other distance(that don't show in the detailed list) being added into the total to yield the CS of 42.16?
Thanks for you forebearance
I think I attached the file
Carol
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