High Speed FPV Drone | 375kmh / 233mph

movr5r9 f80 2500kv fettec esc 4in1 45a proto fettec g4 fc 6s1350 foxeer micro toothless 2

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For people not familiar with this type of drones:
These are selfbuilt.
You cant simply buy it in a store.
Used parts are mostly written in the title or video description.
Learning to fly them like shown in the videos takes years of practise.
Researching is a constant part of this hobby.
Im flying them manually in acro mode which means no gps, no self stabilization, etc.

[gonun]

For all the haters out there who call this fake, I did some math and calculated the approximate speed using the doppler effect.
Feel free to repeat and confirm the calculations and measurements yourself. And please correct me if I did something wrong. It's currently 5:20 am but I can't sleep, so some errors aren't unlikely.

So first I downloaded the audio of this video into Audacity, and set it to spectrogram view. You can then see the frequency change from high to low as the drone passes the microphone on the ground.
No, I just measured the frequency of the lowest peak form before and after the drone passed the camera:
f1 = 1588 Hz
f2 = 961 Hz

I assumed the speed of sound as c = 340 m/s. It probably was a bit slower as it looks to be quite cold outside in the video. But its effect isn't that big.

Now plug that in into the formula for the doppler effect with the moving source:
(1) f1 = fs/(1 - v/c) -> Quad moving towards camera
(2) f2 = fs/(1 + v/c) -> Quad moving away form camera

I just solved that for fs and v and got fs = 1197 Hz and v = 83.6 m/s = 301 km/h

Now you might notice that my result is about 75 km/h lower than in the video. The problem is that the frequency change in the audio took about 1.4 seconds. In this time the quad increased its velocity from around 350 to 375 km/h. The rpm of the motors likely also increased a bit during this time, increasing fs. So it's really hard to accurately measure the velocity this way. However, my calculation still shows that this quad was fast as fuck :D

[LeviathantheMighty]

150A x 20V ~ 3, 000 Watts
3, 000 Watts/746 ~ 4 horse power 🐎🐎🐎🐎

[EderNucci]

At this speed, if your drone were struck by lightning, it would never be seen in "the near future".

[xymaryai]

quadmovr is a serious understatement, thats quadgonr

[fredskidoo]

I love the mild chuckling in the background shortly after you top out at 375kpm . . . tough crowd.

[droneracer]

You can clearly hear the Doppler effect at 0:06.

[HobkinBoi]

160 amps, i feel bad for those batteries

[soulesperanza]

I met this guy in South-Germany. He came out of nowhere and stole us the show. ✌️

[RicardoMoreiraKrahnin]

Insane, above 160A, I saw a peak of 170A this can easily follow any F1

[trullmann]

Peak amps around 170a and voltage drop down to 3.23v per cell !!
Huge hit on that battery! WOW!

[David__]

Would be great to see more details & how this beast handles the 160+Amps! Thanks for sharing :)

[adhdaf]

170.4 amps 😮 ..that is an INSANE amount of power

[Gavs_rc_hobbies]

Watching the voltage drop from 22.4v to 19v, you can just about hear the battery going "Somebody put me out of my

[michaelprice]

Watching that mAh meter zoom is just incredible!

[qwertiee]

170 amps is unseen on anything... Didn't realize a drone could pull 3kw+ but jeez

[Gosuminer]

3 kW electrical power, wow! Much respect for Fettec and whoever built the battery used.

[STK]

It for sure is fast as heck! Awesome power, and from the video it seems at least 250kph, but to believe it's over 375 I'd need a speed gun. The moment you reduce throttle and go into the turn, it just seems so slow. Yes, you are pretty high up and the higher you get the slower any drone feels in the air. But that still feels a lot slower than 80-120kph in the turn.
Nethertheless awesome build, thanks for sharing and I really want to see more!

[justuslm]

When your quad starts pulling 3kW, you know you're doing something right. That's twice as much as a fairly decent vacuum cleaner!

[RSmerlinRS]

that lil battery crankin out 3000 watts.. damn

[EnsignLovell]

I honestly love the sound this drone makes.