Garmin Settings

[T.M.H.N.E.T]

Depends if you turned the gps off I guess :O

OT: A TT'er here many years ago was well known for being driven to events in the back of a van, whilst he warmed up on a turbo

 

[maltloaf]

I think that's the point I was getting at. Your posts and Garmin say it would be the spun distance alone that is recorded so it wouldn't matter if GPS was on. I know on the turbo, I turn the gps off in my 800's settings so that the distance moved is taken from the sensor and not the gps (which would be close to zero depending on the resolution of the GPS lock you have).

 

[Nigelnaturist]

That makes no sense, if I set it to a different wheel size the distance I cycled on the same route changes.

No you don't the wheel rotates less so pass the sensor less often.

This is true actually thinking about it as that's what happens on the turbo but the post I read said distance comes first from GPS if GPS data is available and is smoothed by the speed sensor. I have never ridden with it set to anything other than auto tho so can't comment on changing setting changing distance recorded. The smoothing/reactivity aspect with sensor vs without certainly is true though.

I will have a search for the post I'm referring to and hopefully that will make more sense..

I run both a R20 and an Edge 705 both set to 2111mm for 25mm tyres and after a 30+ mile ride they are usually to within 1/100h of mile of each other, so both record from the sensor.

EDIT
However how websites like strava interprete the data is another matter, as most give different results even from the same data file.

 

[BSRU]

No you don't the wheel rotates less so pass the sensor less often.

It's the same wheel and same tyre, just a different circumference setting on the Garmin.

 

[Nigelnaturist]

It's the same wheel and same tyre, just a different circumference setting on the Garmin.

What, you only need to set a different circumference if you change the tyre otherwise its an incorrect reading.

 

[BSRU]

What, you only need to set a different circumference if you change the tyre otherwise its an incorrect reading.

My reply was a reply to someone stating the GPS was used to determine the distance and not the speed/wheel sensor.
I'm not advocating setting an incorrect circumference, just using it to show their post makes no sense.

 

[Nigelnaturist]

My reply was a reply to someone stating the GPS was used to determine the distance and not the speed/wheel sensor.
I'm not advocating setting an incorrect circumference, just using it to show their post makes no sense.

That will be what I pickedup on then (get it), sorry I am sort of in and out of the garden, digging about 2-3 tonne of earth.

 

[BSRU]

That will be what I pickedup on then (get it), sorry I am sort of in and out of the garden, digging about 2-3 tonne of earth.

Too much time in the sun.

 

[Nigelnaturist]

Too much time in the sun.

Not enough time on the bike, its poorly at the moment