# The speed limit - FPV and Racing Quad Style - Discussion **URL:** \ **Category:** General Drone Discussion\ **Created:** [2 March 2022 10:56 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400 "2022-03-02T10:56:14Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![MartG1960](https://greyarro.ws/user_avatar/greyarro.ws/martg1960/32/163649_2.png) [@MartG1960](https://greyarro.ws/u/MartG1960)\ **Post date:** [2 March 2022 10:56 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/1 "2022-03-02T10:56:14Z")
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 🙂 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 😃 GPS speed data logged by Betaflight Blackbox, converted to .csv and .gpx using blackbox\_decode. Pic of the drone ![IMG_9217](https://d1q8cepst0v8xp.cloudfront.net/original/3X/e/1/e17d9ea49fdae39f4ea7b06bbad140e9f92a01e5.jpeg) Screenshot of gpx data dragged and dropped into Google Earth ![621e4d9a](https://d1q8cepst0v8xp.cloudfront.net/original/3X/2/e/2e9d8293c4b98b0caefabeb3fe8ce2e941933270.jpeg) Screenshot of the relevant .csv data ![621e500f](https://d1q8cepst0v8xp.cloudfront.net/original/3X/7/f/7fb06e0fe6b4e705a7d59e9c413504c918f28594.jpeg) ![621e508d](https://d1q8cepst0v8xp.cloudfront.net/original/3X/9/4/94f9ed66248f460eab7d9330ef95c8670404082c.jpeg) 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](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 🙂 ---
**Author:** ![clinkadink](https://greyarro.ws/user_avatar/greyarro.ws/clinkadink/32/93116_2.png) [@clinkadink](https://greyarro.ws/u/clinkadink)\ **Post date:** [1 March 2022 17:59 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/2 "2022-03-01T17:59:27Z")
Wow, well done Martin. However, just reading the log file. I can clearly see here … ![image](https://d1q8cepst0v8xp.cloudfront.net/original/3X/8/0/80f6af6f2ffd6e32bf25d46c03fcacb27f151ab6.png) … that the drone actually returned. For that reason, your entry is disqualified 😆🏃‍♂️💨 ---
**Author:** ![MartG1960](https://greyarro.ws/user_avatar/greyarro.ws/martg1960/32/163649_2.png) [@MartG1960](https://greyarro.ws/u/MartG1960)\ **Post date:** [1 March 2022 20:01 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/3 "2022-03-01T20:01:32Z")
Next break in the weather ( possibly Friday ) I might try it again with some slightly more aggressive props fitted… ![IMG_9219](https://d1q8cepst0v8xp.cloudfront.net/original/3X/7/a/7a9a412784d357bc155595c9085ecc5e223354cf.jpeg) ---
**Author:** ![PingSpike](https://greyarro.ws/user_avatar/greyarro.ws/pingspike/32/7393_2.png) [@PingSpike](https://greyarro.ws/u/PingSpike)\ **Post date:** [1 March 2022 20:10 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/4 "2022-03-01T20:10:06Z")
> [@Breaking the speed limit - How fast is your drone? Find out on our leaderboard!](https://greyarro.ws/t/breaking-the-speed-limit-how-fast-is-your-drone-find-out-on-our-leaderboard/3186/1688): > > Went out this afternoon with my iFlight Titan DC2 4S and I think I might have a new entry for the leaderboard 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](https://greyarro.ws/t/breaking-the-speed-limit/3186/1523)? Can [@group-fpv](https://greyarro.ws/groups/group-fpv) confirm they’re happy? (@MartG1960 you can’t vote/confirm 🤣 ) ---
**Author:** ![MartG1960](https://greyarro.ws/user_avatar/greyarro.ws/martg1960/32/163649_2.png) [@MartG1960](https://greyarro.ws/u/MartG1960)\ **Post date:** [1 March 2022 20:20 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/5 "2022-03-01T20:20:08Z")
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 😕 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… ---
**Author:** ![PingSpike](https://greyarro.ws/user_avatar/greyarro.ws/pingspike/32/7393_2.png) [@PingSpike](https://greyarro.ws/u/PingSpike)\ **Post date:** [1 March 2022 20:26 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/6 "2022-03-01T20:26:13Z")
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 😊 ---
**Author:** ![MartG1960](https://greyarro.ws/user_avatar/greyarro.ws/martg1960/32/163649_2.png) [@MartG1960](https://greyarro.ws/u/MartG1960)\ **Post date:** [1 March 2022 20:26 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/7 "2022-03-01T20:26:58Z")
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 ---
**Author:** ![SirrRoyston](https://greyarro.ws/user_avatar/greyarro.ws/sirrroyston/32/52106_2.png) [@SirrRoyston](https://greyarro.ws/u/SirrRoyston)\ **Post date:** [1 March 2022 20:31 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/8 "2022-03-01T20:31:37Z")
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. ---
**Author:** ![OzoneVibe](https://greyarro.ws/user_avatar/greyarro.ws/ozonevibe/32/12764_2.png) [@OzoneVibe](https://greyarro.ws/u/OzoneVibe)\ **Post date:** [1 March 2022 20:32 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/9 "2022-03-01T20:32:57Z")
> [@SirrRoyston](#): > > not too many will have GPS tho to record speed That’s OK - an audio recorder will prove when Mach1 is reached. 😉 ---
**Author:** ![notveryprettyboy](https://greyarro.ws/user_avatar/greyarro.ws/notveryprettyboy/32/144159_2.png) [@notveryprettyboy](https://greyarro.ws/u/notveryprettyboy)\ **Post date:** [1 March 2022 20:44 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/10 "2022-03-01T20:44:54Z")
I agree to splitting this up. But in the fpv category, no models. Just name and speed? Maybe split into 2. Wing and quad. ---
**Author:** ![MartG1960](https://greyarro.ws/user_avatar/greyarro.ws/martg1960/32/163649_2.png) [@MartG1960](https://greyarro.ws/u/MartG1960)\ **Post date:** [1 March 2022 20:47 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/11 "2022-03-01T20:47:45Z")
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 ---
**Author:** ![notveryprettyboy](https://greyarro.ws/user_avatar/greyarro.ws/notveryprettyboy/32/144159_2.png) [@notveryprettyboy](https://greyarro.ws/u/notveryprettyboy)\ **Post date:** [1 March 2022 20:52 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/12 "2022-03-01T20:52:12Z")
Good point. So prop size? ---
**Author:** ![MartG1960](https://greyarro.ws/user_avatar/greyarro.ws/martg1960/32/163649_2.png) [@MartG1960](https://greyarro.ws/u/MartG1960)\ **Post date:** [1 March 2022 20:54 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/13 "2022-03-01T20:54:26Z")
I’d go for prop size and battery size ( 4S, 6S ) as commonly available items - excluding the weird homebuilt 12S etc. monsters ---
**Author:** ![BadManners](https://greyarro.ws/user_avatar/greyarro.ws/badmanners/32/80738_2.png) [@BadManners](https://greyarro.ws/u/BadManners)\ **Post date:** [1 March 2022 21:01 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/14 "2022-03-01T21:01:40Z")
_Ground-based_ audio recorder would suffice ---
**Author:** ![Sparky](https://greyarro.ws/user_avatar/greyarro.ws/sparky/32/241788_2.png) [@Sparky](https://greyarro.ws/u/Sparky)\ **Post date:** [1 March 2022 21:03 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/15 "2022-03-01T21:03:12Z")
Would my bespoke self build, home made FC drone be allowed now? > [@\[Camera Drones\] Breaking the speed limit - How fast is your drone? Find out on our leaderboard!](https://greyarro.ws/t/breaking-the-speed-limit/3186/677): > > No, i built it myself and also the flight controller, its a self programmed STM32(Blue Pill) the software is bespoke > [@\[Camera Drones\] Breaking the speed limit - How fast is your drone? Find out on our leaderboard!](https://greyarro.ws/t/breaking-the-speed-limit/3186/668): > > Seeing as i am new to all this, might as well have a go! Make and Model! Home-brew Speed 52.82 MPH Going to do some tweaking! laughing Cheers > [@So... what's on your bench at the moment?](https://greyarro.ws/t/so-whats-on-your-bench-at-the-moment/12042/216): > > This is my self-built Quadcopter, It’s an F450 frame with 1000kv motors, 8x4.5 inch props, 30A ESC, Telemetry, and a self-built flight controller from an STM32 Bluepill development board > [@So... what's on your bench at the moment?](https://greyarro.ws/t/so-whats-on-your-bench-at-the-moment/12042/219): > > [[STM32 Quad-Copter] ](https://www.youtube.com/watch?v=DAevr5mmk0M) ---
**Author:** ![SirGunner](https://greyarro.ws/user_avatar/greyarro.ws/sirgunner/32/37569_2.png) [@SirGunner](https://greyarro.ws/u/SirGunner)\ **Post date:** [1 March 2022 21:05 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/16 "2022-03-01T21:05:49Z")
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 ---
**Author:** ![OzoneVibe](https://greyarro.ws/user_avatar/greyarro.ws/ozonevibe/32/12764_2.png) [@OzoneVibe](https://greyarro.ws/u/OzoneVibe)\ **Post date:** [1 March 2022 21:10 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/17 "2022-03-01T21:10:18Z")
> [@BadManners](#): > > _Ground-based_ audio recorder would suffice 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. 😉 ---
**Author:** ![notveryprettyboy](https://greyarro.ws/user_avatar/greyarro.ws/notveryprettyboy/32/144159_2.png) [@notveryprettyboy](https://greyarro.ws/u/notveryprettyboy)\ **Post date:** [1 March 2022 21:21 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/18 "2022-03-01T21:21:12Z")
Splitting to battery size would expand things a little too much? Dunno. A thread needs testing. ---
**Author:** ![MartG1960](https://greyarro.ws/user_avatar/greyarro.ws/martg1960/32/163649_2.png) [@MartG1960](https://greyarro.ws/u/MartG1960)\ **Post date:** [1 March 2022 21:27 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/19 "2022-03-01T21:27:30Z")
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 ---
**Author:** ![SirGunner](https://greyarro.ws/user_avatar/greyarro.ws/sirgunner/32/37569_2.png) [@SirGunner](https://greyarro.ws/u/SirGunner)\ **Post date:** [1 March 2022 21:29 UTC](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400/20 "2022-03-01T21:29:21Z")
I agree and also each prop size would only be relevant to certain battery sizes anyway if that makes sense? Lol [Next page](https://greyarro.ws/t/the-speed-limit-fpv-and-racing-quad-style-discussion/43400.md?page=2)