Master Airscrew Stealth Props sound recording.

[Przemo-c]

So I've recorded sound off stock props at ~1m and replaced them with black Master Airscrew props.

DJI_MINI2_MAS_PROPS.wav

drive.google.com

They are tighter around the screws. Had to jiggle them a bit to make them looser.

They are a tiny bit more quiet overall but nothing to phone home about.

What changed quite noticeably is the pitch of the sound they make. It's a less annoying sound.

I bet nobody is reading this just listening to the audio

I'm attaching spectrum image of the audio.

 

[eEridani]

Is that spectrum at idle or at hover?

 

[DaveS]

Agreed, not so much quieter but a lower pitch.

 

[CorralesDan]

Same for me on my Mini 2.

 

[360 Guy]

Another pilot agrees.

 

[Przemo-c]

Also they do seem to be more efficient... or higher pitch props. The lower stripes seem to be tied to RPM and they are a bit lower than stock so they need lower RPM to generate same thrust.

 

[C_Setch]

I just swapped out my stock props, and not only are they visually more appealing and increase visibility (red), but the noise is much less annoying.

 

[vadda]

Here the same
Just about 3db quieter
I don't know if it's worth it
Anyway my hovering test in attachment