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Sep 2020
9:10pm, 29 Sep 2020
19,456 posts
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flanker
hence the last line of the second half of my post 
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Sep 2020
9:12pm, 29 Sep 2020
12,832 posts
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Badger
Might just be battery chemistry there. Levels map voltage to percentage (and try to map it linearly, but fail if the rate from 60-50% versus the rate from 50-40% is anything to go by); diffusion of the ions means the voltage is lower while discharging fast than when the watch is in standby.
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Sep 2020
9:18pm, 29 Sep 2020
19,457 posts
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flanker
It's definitely not linear! That is the most likely answer; I just wondered if it was trying (ill-advisedly!) to do anything clever.
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Sep 2020
9:41pm, 29 Sep 2020
12,833 posts
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Badger
Chance would be a fine thing...
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Sep 2020
10:45pm, 29 Sep 2020
12,137 posts
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larkim
I've definitely run down to very low percentages during a GPS activity, then see it bounce back into the 20s and 30s when back in normal "watch" mode.
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Sep 2020
11:11am, 30 Sep 2020
31,774 posts
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SPR
Track mode second session yesterday. Had the distance drop out this time in the middle of the session (lap 8 has 0 distance), odd! probably time to log it on the beta thread. You can see in the map that it pick up me cutting the track at the top, it didn't pick up the cutting at the track at the bottom end (possible this confused it leading to the 0 distance lap).
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Sep 2020
11:13am, 30 Sep 2020
12,139 posts
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larkim
interesting that the first lap was 400m exactly. Shouldn't the others have a higher degree of consistency / precision about them to be usable?
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Sep 2020
11:20am, 30 Sep 2020
31,775 posts
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SPR
The cutting it picked up isn't how I cut and I don't remember cutting twice but given it's using algorithms to correct stuff, it makes sense it will mess up stuff like that and as long as it gets the efforts right, I (and I think most people) will be happy.
Session was 4 x 600 followed by 4 x 150m (slow 150 was an abandoned rep after a near collision with someone that cramped right in front of me)!
I've just noticed flybys don't work on strava with track mode.
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Sep 2020
11:26am, 30 Sep 2020
31,776 posts
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SPR
x-post
Larkim - The first lap was auto lap (had it on by accident), so it split one of the 600 efforts.
I'd ignore the recovery efforts. I have a rolling start into these, don't know how much effect that would have on distance (10m over 600m isn't bad but it could be better). 166 on the last 150 is odd though.
I could delete the calibration file and recalibrate at some point just in case there's some small issues in there.
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Sep 2020
11:29am, 30 Sep 2020
31,777 posts
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SPR
Is I can calibrate the track before my race on Sunday it will be interesting to see how close it gets to getting the distance right on that.
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