He flies downhill - much faster than flying uphill 
I know I am outvoted on this but all other speed records I have come across involve 2 timed runs - one in each direction and an average taken of the speeds.
Otherwise it seems to be a case of sacrifice your aircraft to biggest wind you can find …
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That would be kind of pointless too - since (fundamentally) they are pitch and GPS speed limited.
Therefore, the average would become lower the faster the wind … GPS limited downwind (always the same) and pitch limited upwind (lower the faster the wind speed).
So - yes - then we get into whether they are in ATTI mode or not and it then becomes another kettle of fish.
In the end it’s just a bit of fun and boundary pushing … and pushing the boundary in ATTI mode is just as relevant as in GPS mode - if not more so.
Most speed records tend to be a case of who’s got the biggest balls anyway ( unless it’s a womans event, but then again these day i’m not so sure). So if you have enough bottle to lose the drone, why not.
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Yes, you did mention this before … but …
is 100% accurate, any a test that involves travelling in both directions and taking the mean average is pointless. Dave has put it far more eloquently than I can, but I’ll have a bash …
Using Atti mode:
- The wind is blowing 50 mph from west to the east
- I perform my Atti run from the western side of Barbury Castle heading east
- I achieve a max speed of 60 mph
- I then then perform the same run in reverse from the eastern side heading west
- I cannot use Atti mode as there is no GPS lock (that’s the whole point), so need to use Sport
- I achieve a max speed of 12 mph (due to the 50 mph head wind)
- My average is 36 mph
Not using Atti mode:
- The wind is blowing 50 mph from west to the east
- I perform my run from the western side of Barbury Castle heading east
- I achieve a max speed of 37 mph
- I then then perform the same run in reverse from the eastern side heading west
- I achieve a max speed of 12 mph (due to the 50 mph head wind)
- My average is 24.5 mph
Either way, the result is no more than I can achieve in my back garden with no wind.
Regardless, such a test would make the whole thread kind of boring. As without Atti mode, you’ll always be limited by GPS positioning, e.g. Mini 3 Pro @ 37 mph. So what’s the point 
My wife tells me, I have lots of wind every night — must try to launch the drone 
Leader-board updated.
17th! 
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I beat my own record and just crept over 60mph
Mavic 3 Pro
60.89mph
On the final flight for me of the weekend.
Shame that the wind was still missing Well 8.1 mph wind
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… again …
16th!
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Sorry meant to do that
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Thanks @DroneGeek - leaderboard updated, you’re now faster than the fastest Avata in the club 
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It wasn’t an Avata, it’s a Mavic 3 Pro.
Edit … Ignore me, re read the post
I read it like you must have.
Thanks.
You might want to remove my old entry at 17 (I think)
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Definitely a thing happening.
(And I know, to my cost, how difficult it is to unravel an edit error from that leader-board. )
It will re-emerge as a Avata-3S-Pro …
D’oh!
I was wondering why I had to re-number so many entries 
I’ve got to renumber them all again now