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understanding the wind speed number...

Posted: Sat Jul 25, 2020 3:49 pm
by pfuller88
I'm trying to understand what I'm looking at for this number? For example, in a headwind, if I'm traveling at 25mph and it's showing, for example, +10, does this mean I'm fighting at 10mph head wind or does it mean the headwind is 35mph (25+10)? Conversely, in a tailwind, if I'm traveling at 25mph and the wind is showing -10, what does this mean for the actual wind speed - still 35mph but it's pushing me from behind and I'm getting 10mph benefit?

best regards,
Peter

Re: understanding the wind speed number...

Posted: Sat Jul 25, 2020 4:48 pm
by Velocomp
I don't know where you are seeing this number; on your Garmin or in Isaac?

Please post a .ibr ride file and I will help you figure things out.

Re: understanding the wind speed number...

Posted: Sun Jul 26, 2020 1:25 pm
by pfuller88
Here is a ride file from Saturday. I see the number on my garmin 1030 along with the slope.

Re: understanding the wind speed number...

Posted: Mon Jul 27, 2020 5:49 am
by Velocomp
pfuller88 wrote: Sun Jul 26, 2020 1:25 pm Here is a ride file from Saturday. I see the number on my garmin 1030 along with the slope.
The wind number you see on your Garmin is ground wind speed, in mph. +2 means there is a headwind of 2 mph. -3.4 means there is a tailwind of -3.4 mph.

Note that tailwinds can also be the result of riding in a draft.