Calculating the difference in speed between up and down wind, had about a 10 mph tailwind. Surprised this was using Gemfan 5030 props. Video was captured with an HMDVR.
Tarot tl300l OSD
Runcam PZ0420M fpv cam
TS5828 Video Tx
HMDVR
Littlebee 20a
SP Racing F3
Emax RS2205 2300kv
Nano Tech 1800mah 4s
Gemfan 5030