Breaking the speed limit - FPV and Racing Quad Style - Discussion

Went out this afternoon with my iFlight Titan DC2 4S and I think I might have a new entry for the leaderboard…

36.34m/s, or 81.29mph :slight_smile:

Conditions were a light wind ( UAV Forecast reckoned about 13mph ) blowing from the East, so the speed runs were done from E to W. Not sure if just oldish batteries, or because it’s the first time they’ve been fully charged this year, but had pretty bad voltage sag ( down to 13V ) and they didn’t last very long at all - but they are just 0.450mah :smiley:

GPS speed data logged by Betaflight Blackbox, converted to .csv and .gpx using blackbox_decode.

Pic of the drone

Screenshot of gpx data dragged and dropped into Google Earth

Screenshot of the relevant .csv data

621e508d

If anyone wishes to verify the data, the original Blackbox logfile is available at http://martins-models.co.uk/martin/BTFL_BLACKBOX_LOG_Titan_DC2_20220301_161317.BBL . The fastest run was on flight #2.

Interestingly, with a logging frequency of 500kHz the total of approx 8 minutes of flight today took up 6MB of Blackbox memory - handy as the FC in the DC2 only has 8MB available :slight_smile:

Wow, well done Martin. However, just reading the log file. I can clearly see here …

… that the drone actually returned. For that reason, your entry is disqualified :laughing::man_running::dash:

Next break in the weather ( possibly Friday ) I might try it again with some slightly more aggressive props fitted…

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You’ll need to educate us non-FPV’ers please @MartG1960

Is the iFlight Titan a BNF type drone that warrants its own slot on the leaderboard? Much like Jez @Earwig 's baby croc was?

Can @group-fpv confirm they’re happy? (@MartG1960 you can’t vote/confirm :rofl: )

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I bought it in BNF form ( it was my first FPV ) though it is available in kit form, so the distinction between BNF and self-build could get a bit blurred here :confused:

Is there only one entry allowed on the leaderboard for self build ? If so it seems a tad unfair to be have a 2" 4S drone up against a 6S 7" or larger…

We’ve long debated splitting the leaderboard in to two completely separate leaderboards / threads.

One for the “high street” drones (the DJIs, Autels, Yuneecs, etc, of the world) and one for the FPV’ers.

I think the time for that split is fast approaching us :blush:

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Also worth noting that the #1 spot on the board is held by an iFlight Nazgul…which is also available as BNF or in airframe only form…

Perhaps, to avoid the board filling up with a plethora of various FPVs, a single entry per frame size and battery size ? My DC2 would then fall into the 2" 4S category, while my Evoque would drop into 5" 6S IYSWIM

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That would be so hard to control tho. So maybe the two categories should be
High Street Vs Custom/BNF/PNP etc FPV
Then custom FPV broken down into
2S
3S
4S
6S?
not too many will have GPS tho to record speed.

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That’s OK - an audio recorder will prove when Mach1 is reached. :wink:

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I agree to splitting this up. But in the fpv category, no models. Just name and speed? Maybe split into 2. Wing and quad.

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Why no models ? There’s a big difference between the capabilities of a 2" quad and a 7" one, so the model would be needed to differentiate

Good point. So prop size?

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I’d go for prop size and battery size ( 4S, 6S ) as commonly available items - excluding the weird homebuilt 12S etc. monsters

Ground-based audio recorder would suffice

Would my bespoke self build, home made FC drone be allowed now?

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I think forget about frame models or bnf/pnp/custom.
Spit into prop size and battery size. Doesnt mater if its bnf or custom build everyone is on an even footing

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Ummmmm yeah - that’s what I meant - you don’t hear the sonic boom onboard - or there would have been a shit load of high profile Concorde passengers suing for loss of hearing. :wink:

Splitting to battery size would expand things a little too much? Dunno. A thread needs testing.

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If we we’re going for a separate ranking from high-street/gps/camera drones, and going by prop/frame size only, then there’d be few entries as there just aren’t that many distinct sizes in common use ( 7 ? ) so splitting into 4S/6S ( and 5S if anyone wants that too ) would give more people a shot at it I think

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I agree and also each prop size would only be relevant to certain battery sizes anyway if that makes sense? Lol