Elevation Reading
Planned
Hello , today i went for a ryde with a friend, when we uploaded our rides to strava the cumulative elevation was way off. he rides with garmin edge 520, what could possibly make a difference off 1177 of elevation.
settings on my karoo 2 seems right.
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Dear hammerhead team,
Should this already be fixed now? My last ride with a relevant elevation profile was end of August. At that time the elevation gain that I got was still crazy, more than double then the recalculation of Strava or the data of my fellow riders.
Please give this issue a high priority, to have reliable elevation data is really essential to plan your energy on a ride.
Thanks, Jan.
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@Terry Did you try to Correct Elevation in your ride? And maybe just tell your buddy to do so too. Then you can determine which one was more accurate and move from there. Also for such issues, I assume HH team would need fit file. Preferably from you and your buddy in order to compare.
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@Adrian Borrallo my friend did ryde around 5 more km , 2,5 to meet with me and going home but the elevation difference is not there cause these 5 km are in our home town, almost 0 elevation gain.
the time difference, probably he went 2 slow home after the ryde.
@Martin B Correct Elevation, where can i do this?
in the HH dashboard wen i click the ryde gives me a number. looks like its a cumulative climb and is closer to reality. just don't know, i need some explanation.
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Terry, is the Garmin 520 set to calculate elevation via GPS or Barometer. Karoo calculates it real time from barometer, and a change in temperature and time of the day does show fluctuations in reading. It is true that a difference of "1177" is not reasonable, and is something that is getting investigated currently on the development side from earlier reports.
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Finally this week I managed to use the Karoo2 outdoors. The elevation measurement is soo far off in every ride. I have a standard ride I do at lunchtime. I normally register around 200m elevation gain. Yesterday my K2 registered 367m... I was already at 120m in a first climb that is 30m at best. Then it seemed to stabilise. I would have expected this kind of problem in the Karoo1 but in K2 this should not be an issue...
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I don't really understand how it can be so hard to get this so wrong.
If the Karoo knows where you are on the map, it follows that it should also know what your elevation is. If I look at a point on an Ordnance Survey (UK) map I can see what the elevation of that point is - to a reasonable degree of accuracy - based on the contour lines either side of that point, usually to a level of accuracy to within 5 or 10 metres (depending on the scale and terrain of the map).
To see 167m of inaccuracy (as highlighted above) is disappointing and not what I would expect from such an expensive device.
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@Steve: maps loaded in Karoo does NOT have elevation data. Altitude is measured by barometric (and prolly others) sensors in the device. e.g. I currently have Edge 520 Plus and sometimes/usually/mostly I have the same inaccuracy really. That is the reason why I never trust what I get from the device and rather use Correct Elevation function in Strava which obtains the "real" elevation data provided by geodesy.
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OK, but my point was that we (or rather Hammerhead) should stop thinking about maps as 2 dimensional entities because maps are NOT 2 dimensional entities. The relief of the terrain is just as important as the highways, byways, and other POI data presented on them. Elevation data should either be stored - or correlated - with/from the map on the Karoo. I have 28GB to store this data; let's use it.
I'm not even sure that the barometric altimeter works properly on the K2 because - if it did - it would be capable of telling me what my altitude is when I deviate from my selected route. Right now, whenever I go off piste, the Karoo has absolutely no idea what my elevation is.
Why market a feature of the product that doesn't appear to work reliably?
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update : so today I decided to take out the data SIM card from the K2, no internet.
k2 got the elevation from automatic setting like its always been but this time it got internet just at my door.!!! ( the only time I did manual it didn't record my elevation. must be some software bug going on. or cause I got internet from SIM card , don't know)
so today I didn't get bogus results for the elevation!! at least not in the +2 hundreds or thousands like its has been giving me. i did 49 km, the K2 barometer gave me 1354 m, gps elevation by strava gave my 1243 m, my friend with Garmin edge 520 reads 1,213 for elevation.
I don't expect the elevation to be all the same, each machine uses different ways to get elevation, but at least this numbers are more acceptable .
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Hey there,
I have an addition to this issue. Any recorded route has a wrong elevation. Not only a couple of meters but a lot.
A couple of points along that issue
- Recorded routes show a different elevation than any device I checked against (strava, komoot, wahoo)
- Imported routes are shown wrong - e.g. I imported a gpx route with an official elevation of 671m is showing on the dashboard and the k2 with 5772m of elevation
- I tried to set the elevation manually to my current one but k2 still just reverts back to the previous one
I have no problem with some off numbers but this is ridiculous and it affects every recorded ride. Also asking myself what this means for the elevation information (upcoming etc.) while riding?
Would be great to have some information and support here.
Cheers
Kruno
PS - This is my first post and I was surprised I had to register again although already having dashboard access. Nothing major but something worth bringing merging.
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I am having the same issue. Just bought the K2. On every ride the elevation gain is WAY overstated. 30 mile ride yesterday with real 1800ft elevation gain (per strava and consistent with Garmin etc.). K2 says it was over 3000 feet gain. Should never be that far off. This happens on every ride.
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Hello,
Just wanted to ask if there is anything going on in the elevation department. I consistently get way too high barometric reading, around twice the amount of map based elevation. It really looks like it is the noise, as the profile looks fine after smoothing, but VAM reading in ride goes to crazy values sometimes.
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