Well it's not possible to upload it here.... Looks to be all sorts of problems with this forum...
Your file of 284931 bytes exceeds the limit of 3058. 2648891419.fit
I just noticed this topic.
Not sure if roccolord still have this problem.
Do you have this on several bridges, or is it always the same bridge ?
I have noticed this problem also, but only on one specific bridge, the Waalbrug in Nijmegen (the Netherlands).
Suddenly the speeds goes from almost 30 km/h to 10-15 km/h.
Had this problem in the past on my Edge 800, but noticed it lately also on my Edge 1030 while crossing the river
It looks like there is some source that is disturbing the ANT+signal.
Don't know how/what the source of this disturbing signal is.
Donald
You should see what happens when you have large trees left and right off the road. Even segment time is wrong. I got completely different numbers when I put a speed sensor on. My performance increased by 10 % or more. No one tells what reception is under tree canopy. All the numbers you see are estimated. Before speed sensor variation in speed 5 to 6 percent on a straight line. After sensor hello smoothness.
The problem I noticed is with speed sensor, so there must be some source of disturbance in/under/above the brdige which makes my speed 'crazy'
DOnald
…from here:
https://support.garmin.com/en-US/?faq=9NL91YJSJd3Tnyif9jRSy6
The BSS (Bike Speed Sensor) contains a magnetometer that measures the three dimensional components of the ambient magnetic field (similar to an accelerometer measuring acceleration). As the wheel rotates, the magnetometer measures its own rotation within the surrounding earth's magnetic field.
If it is a bridge made of steel or ferroconcrete it is possible that the ambient magnetic field is disrupted.