burnthesheep wrote:
Down east where I work the wind around lunch time picks up. It is a very consistent direction. ...
Wish I knew the gain at yaw from the 2008 Felt DA to the 2018 Trinity Pro......at yaw it just has some fun speed data so far.
Tell me if this makes sense
This is a "loop" I do, 4km east then south, back north then west. East at about 60deg heading, south at 210, back north at 30, west at 240ish. I do this 4x for a total of 32km, about an hour, then I plot all the data for that hour.
The bars in this plot show the "time" in seconds at each direction in 10 deg buckets. 0 being North. So you see I spend a big chunk of time at 60deg (green bar) and 240deg (pink), as well as 30deg (green) and 210deg (pink) which aligns with the map above. I present it this way so I can mirror the out and backs
The lines show the apparent wind direction, -8deg at 30deg, 8deg at 210deg. I still have a bit of calibration to do but it should be close.
I can see that when travelling at 80 degrees and 260, I have little wind yaw
This chart shows the wind speeds at these same angles. Sure enough wind speed peaks at around that 80-90 deg, tailwind peaks at 260 (80+180). Speeds are in m/s.
I still have a few things to calibrate but next step is to plot some type of "instantaneous" CDA to the various yaw buckets.
Probably a convoluted way of presenting it but I was impressed by the wind's constant behavior for an hour.