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Logging activities: A question of trust

5 watchers
Jun 2012
9:46pm, 18 Jun 2012
21,581 posts
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Nellers
Not longer, just differently accurate Hamms. More precisely incorrect perhaps.

Or just plain wrong in a totally correct and calibrated way.
Jun 2012
9:46pm, 18 Jun 2012
60,772 posts
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GregP
I think you are in the same place as us (or at least me, Glenn and Spouter and Tom) Hamm.

Understand the theory, fail to understand why it is so different in practice: I'm still alarmed about strava giving different (sometimes higher, sometimes lower) maximum speeds.

If we, for one moment, assume Garmin Connect (and the unit itself) interprets its own data 'incorrectly', then the 'next most likely' candidate for getting it 'right' would (I'd argue) be Training Peaks.

Which comes out with the same numbers as GC, Fetch and, I believe, RuniningOnionsFriedOnSaturday
Jun 2012
9:47pm, 18 Jun 2012
60,773 posts
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GregP
Great post, Nellers.

~hums MoL Europop tune~
Jun 2012
9:54pm, 18 Jun 2012
21,582 posts
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Nellers
Geoffrey, fetch me my fighting slide-rule!
Jun 2012
9:56pm, 18 Jun 2012
60,774 posts
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GregP
http://www.youtube.com/watch?v=llyiQ4I-mcQ
Jun 2012
9:58pm, 18 Jun 2012
21,583 posts
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Nellers
There is no call for that kind of behaviour!

And being serious, is this the sort of small story that MoL might be interested in?
Jun 2012
9:59pm, 18 Jun 2012
60,776 posts
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GregP
I wondered that. I wondered that a lot.
Jun 2012
10:00pm, 18 Jun 2012
21,584 posts
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Nellers
And what did you do about that wondering?
Jun 2012
10:02pm, 18 Jun 2012
60,777 posts
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GregP
I tried to contact TH via the BBC website, but could only find a generic 'complaint' link. Why don't you tweet the dear boy?
Jun 2012
9:47am, 19 Jun 2012
2,964 posts
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sprouty76
Hammerite made a good point - I wonder if strava was just using the GPS signal and ignoring data from a speed/cadence sensor (assuming you have one)? There's every chance that the data from GPS and the speed sensor could be different, especially in a GPS blackspot.

About This Thread

Maintained by GregP
A sort of 'Why FetchEveryone is better than STRAVA' wire.
----

Last Sunday I cycled to church.

My Fetch log, which I trust beyond all possibility of doubt, tells me this:

17.07 miles, 1h19m46s, max speed 30.3mph

Garmin Connect, which one assumes is closest to the raw data, tells me this:

17.07 miles, 1h19m46s, max speec 30.3mph

This makes me very happy.

Now, gentle Fetchies, you may have seen or read or experienced strava recently, and been tempted, as I was, to 'dabble' and see whether it might be fun. strava taking data from the same source (my Garmin EDGE 800) tells me this.

17.1 miles, 1h20m48s, max speed 31.9mph

Interesting, eh?
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  • garmin
  • gps
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