Wonky Garmin Edge

Mike400

Getting a bit fed up with my edge - its the 305 model.

Everything works fine with the exception of the elevation data. Now I wasnt expecting it to be that accurate, but its waaaaay off.

For example I done a loop from my house, when I set off the elevation was 50ft, when I returned to the same point it was -100ft

When I leave work on the commute, the same starting point outside my office can be anywhere from -12ft to 850ft.

The one constant is that it registers as downhill all the way to work (correct) but registers downhill all the way home again?

Any ideas?

johncp

no solutions but can just add that I get a change in elevation during a turbo session in the garage....

STEFANOS4784

Mike400 wrote:

Any ideas?

Put it on the floor, smash it to pieces, go for a ride without having to worry how much above sea-level you are

Rodrego Hernandez

It works it out from air pressure, not from gps so as air pressure changes during the day, your elevation will be wafty.

monkeyjo

Apparently I managed to levitate 6 foot once while on the turbo.

The elevation data is generally nonsense on my 705 and others have said similar things. I don't bother looking at it anymore.
I'm sure someone on here said they sent their 705 back to Garmin and got a replacement. Can't remember if it made any difference.

freehub

My 605 works elevation via GPS.

Lady Venom

My 310XT works perfectly well

soveda

Mine seems reasonably accurate, or at least consistently inaccurate!

GiantMike

Rodrego Hernandez wrote:

It works it out from air pressure, not from gps so as air pressure changes during the day, your elevation will be wafty.

The 705 has a baro altimeter, the 205, 305 and 605 use GPS altitude, which should be accurate to around +/- 30 feet.

The altitude errors are usually a sign of a weak GPS signal (built-up area? trees?) or a poor receiver.

juankerr

If the 305 has GPS altitude rather than barometric then, no it's not going to be very accurate.