But Is It "STEALTH"? Master Airscrew Propeller Review for DJI Mini 2
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- เผยแพร่เมื่อ 7 ก.ค. 2022
- TheseMini 2 propellers from Master Airscrew claim to be quieter and more efficient. But are they? Or is that all marketing hype? Find out in this in-depth review.
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Aiyo
Very nice...the drone looks great in blue. My two cents: It would be nice if you could've measured with the drone up in the air. The air hitting the ground can create a lot of noise, therefore what we're hearing may potentially not be the sound of the propellers themselves, but instead the sound of the wind hitting the ground bellow. Also, you may want to double check the 3db thing...as far as I understand, 3db is double the sound pressure level. Cheers
Thanks for your comment, Rennedy. I did consider the idea of measuring it in the air. However, the drone wouldn’t stay motionless and then the measurement would change. Distance from source to mic is critical, as you know. I suppose I could have placed the drone on some sort of pedestal. I’m not sure if that would have yielded a different result.
3db is the doubling of sound intensity from a physics standpoint, but from a human perception standpoint, 10db is the commonly quoted change for a doubling of volume. We hear logarithmically.
Thank you for this video, it helped me in my purchasing decisions 😊👍🏼
You’re welcome. Glad it helped!
the black propellers to the blue propellers transition is epic!
Thanks! I'm quite proud of it, but you're the first person to comment on it. :)
@@MatthewHaines at first I thought my video messed up so I replayed it and I was fascinated! I probably watched it about 10 times. Very cool and well done
Only way to tell is in the air and at the same height. For instance your drone may have a completely different sound hovering than on the ground. Because what really counts is the work load on the motors and the speed of the prop that is going to give you different sounds. So if the prop is bigger or has more pitch the rpms are going to change to make it hover in place.
I agree that in the air would be better, but I couldn’t find a way to reliably measure it in the air. It doesn’t change the major problem though: Master Airscrew claims they’re “stealth” and that you’ll hear a difference, and yet they only claim an almost inaudible change of 2db.
I hear a different pitch in sound but your right . The volume of sound , it sounds the same to my ears. For me it’s just getting off the ground with the original DJI propeller angry Bee’s sound. But once I get up over 200 feet the sound is hardly noticeable. So it doesn’t really matter at that point.
Hi Lisa, and thanks for your comment. You’re right, the drone is next to silent when you get to proper flying altitude, so “stealth” becomes irrelevant. I was just testing a very cheap drone recently, and even when it was 200-300 feet away, I could hear it in my voiceover recordings. Definitely not as quiet as the Mini 2!
@@MatthewHaines This is my first drone the DJI mini 2 and I’m addicted. I never thought I would get into a new hobby until I flew this thing lol I take it everywhere with me now. I bought like 7 accessories already and I just got it. I’m definitely going to buy a second drone by DJI that’s more advanced than the mini 2 . But I will still keep my mini 2 . because I do love flying it. It’s so much fun. And it’s nice to have two drones anyways , in case one needs to be sent out for repair or some thing you’re not without a drone.
On the mini djis. The very flexible props is by design. They are like cushion or suspension. The stiffer ones react quicker because of no cushion ect. It causes vibration to travel threw the arms as well. I tried the cf ones so far. They are stiff. Think they would be great if thinner flexible and of course strong. Air screws im guessing the same. Better maybe..., ones will check me. For now stock is tops for me. Want brite orange? Air brush and outer 3d of your stock ones. Cake.
Yeah I agree that the stock ones are probably best to just leave on the drone. Airbrushing paint on them would add change their properties (weight, air resistance). Thanks for your comment!
@@MatthewHaines I'm thinking super thin layer of paint may be ok. I'll test it. Airbrush because it's a super thin layer
danke für den asführlichen Test, sehr gut gemacht, Grüße aus Deutschland👋👋👋
Ich freue mich, dass Sie es nutzlich fanden. Vielen Dank fur Ihren Kommentar!
From my own understanding having been helping out with audio tech in theatres for years (not professional, hobbyist): pitch changes how sound travels. So while it may be a negligible difference up close, when distance starts to factor in a higher pitch won't travel nearly as far - take cars with bass-heavy tones as an example. Those you can hear for blocks, while the little high-pitched EV you can hear up close (because of the different distances the sound waves can travel).
This is much the same as in radio frequency, where a higher frequency won't travel as far before dissipating (2.4GHz vs 5GHz WiFi, for example).
With both frequencies/pitches having a fairly low volume to begin with, I doubt that they make much difference - but there is the different tones to consider.
Thanks for your comment!
One issue I see with your on-camera mic is that most people don't lock down the audio recording, That "auto" function will always try to make everything the same volume. So my question is whether or not you put the audio recording into manual controls?
Limiter was turned off and no auto adjustment of audio was on. Full manual setting in other words. I’m an audio engineer from way back so I’m controlling my levels appropriately. 👍
Yea the problem I had with mine is my drone never got off the ground so I checked cw & ccw and couldn’t tell which was what so I don’t use them how did you tell cw from ccw?
Two of the sets have a small mark on them near where they attach, and two don't. They correspond to the original marked and unmarked props. Check the "how to install" video I did, which has more detail. I don't have the drone in front of me right now to be more clear than that. th-cam.com/video/bnMH-NfrzL8/w-d-xo.html
If they were twice the price they "would" sound even quieter....worth it lol
‘Props’ to you and your ‘Well informed’ video 👏🇨🇦
Thanks!!
I did the same, bought a blue set for the color only. In my opinion the actual sound seems a tick louder than the stock props.
Thanks for your comment!
I also agree tbh bought a red set and seems to me they are a little louder the stock props
I think that it's a matter of “perceived” volume - on my Mini 3 Pro, the MAS “Stealth” props definitely had a lower pitch vs the OEM props, which takes into account that higher pitches are perceived as louder, despite the decibel level being the same.
Now that MAS has come out with their “Super Stealth” series, I'm curious to know how they compare.
Thanks for your comment!
What's with the back right motor, it looks like it's really out of balance with the stealths
Yeah it wasn’t seated quite right at the time. I fixed it later. It wasn’t contributing to the kind levels any though.
Hey Matt, love the blue props...! Appreciate your approach to measuring the difference, but there are so many variables in measuring sound that each video made on these props has some flaws. Sound measurements need to be highly controlled, not just for distance between the sound source and the microphone (as your tape attempted to achieve) but for many other factors (e.g. what was the ambient noise in the environment at the time of the recordings, the microphone's characteristics, etc).
Your sound recordings results showing a higher pitch and equivalent sound levels are valid for your experiment, but do appear to contradict the results reported by other experimenters. Such is the scientific method..! In any case, my ears tend to support the lower pitch claim (less 'perceived' sound level), and my eyes love the red colour I selected for my Mini 2...so happy with my setup. Cheers,
Thanks for your thoughtful comment! None of the videos I watched on these props had any controlled testing at all. It was just based on (very fallible) perception. If you’ve got some links to videos that tested properly, I’d love to take a look!
But even beyond that, the fact that MS only claims a 2db drop in level, should give the buyer pause. That change is below the threshold that many people can perceive. Whether one can perceive the difference or not, it’s hardly “stealth” IMO.
Thanks again! And red would have been my other choice. 👍
Du hast Recht, aber mir reichen die Videoaufnahmen, wo deutlich der Unterschied zu hören ist. Eine Compakt Range ist dafür nicht notwendig, weil ja dies nicht der realen Umgebung entsprechen würde. ...wissenschaftliche Aufnahmen braucht kein Mensch dafür. Matt hat das fantastisch gemacht. 👍
There's a host of potential tests at various altitudes in different air temperatures, humidity levels and pressures. The variables are almost infinite so there comes a point where differences are so negligible that testing is just academic. I think to develop a product that would really give a noticeable sound reduction would require alteration of the prop RPM, a significant increase in prop size, and probably some software tweaking.
Earplugs are on special offer a Amazon if it bothers you that much.!
Hah! Perhaps the Master Airscrew props should come with earplugs, for the truly stealth sound. Thanks for your comment.
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I bought a set in Orange so I could see the drone easier. I too like color in the props so I think I'll get a set of Blue ones ( wish they were darker Blue and put them on the aft motors, that way I can tell which way the drone is pointed if I can't see my screen or during landing. One thing I did notice is they are bigger than DJI props so be VERY careful when putting the Prop Bra on for storage so they are not being deformed. I actually only put 2 prop blades under the top strap and secure the other 2 with a rubber band. Hmm- orange and blue - GO GATORS!
That’s a good idea! Front and rear prop sets in different colors! And yeah, they’re bigger. The restraints I use to secure the props are very fiddly with the larger MS props.
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I bought some cause they look kool,an I think better visually when a tad away from you for orientation, not really for stealthy
I think the description says its up to -2 dB quieter which is really a pointless "upgrade" and not something you can call steath.
Agreed!
If I’m not mistaken there is a rock music in the background but very low
Where do you hear this?
I like the rubber tipped ones one the mini 3pro by itself, I heard a slight higher pitch on the master airscrew, but not much,almost the same,like I said I got them for the different color options
I wonder if the rubber tips would have saved my fingers when I cut myself catching it a few months ago! The MS props are sharp.
@@MatthewHaines ,I'd say,but still,they have thump,those motors do
An you have the mini 2,we sell these at Walmart now for 500.00 roughly, no rc remote with screen built in,like mini 3pro or mavic air2s does now,a regular one,but still,if you have a drone an have one,then bought a mini 2 an updated your firmware, then press an hold front button on mini 2 while rc is on,they'll bind,then go through the rc settings an add the mini 2 to your drone selection, then they should be both linked an then see what the drone sees shortly after connection to transmitter, I saw a guy do this an I was blown away didn't think th rc an mini 2 both would be compatible, the controller alone is too expensive to buy separately, but is a nice touch instead of the old way,with cellphone as your viewing screen, just some info I've found thought you might like to know unless you already have one for your mini 2. I help customers better understand when buying a drone at Walmart if I'm near when they are looking to buy.
@@kennywheelus6857 thanks for the info! I did not know the DJI screen could be paired with the mini 2.
@@MatthewHaines ,yes,after using your phone with the app to make sure your updated,then simply have your rc controller on an the mini 2,then on the front of mini 2,should be a button,press an you'll hear a beep while rc controller is beeping couple times,then they should pair,I don't remember if you need your Bluetooth on the rc on as well,you'll have to watch the video, I look to see who made the video an let you know to look up
Very nice
Thanks fo your comment!
Why does the back right blue props look like it’s not balanced or something?
Good eye! I didn't have it tightened down properly when I made the video. I've since reseated the prop so it behaves itself.
@@MatthewHaines oh ok no worries I just wanted to ask because I bought a drop mechanism for my mini 2 and I got the propeller rotating too fast error and I replaced the blades and it went away but the propellers were brand new before hand. So idk but I’ve only had this drone for a few days so maybe the new update I did made it happen because I didn’t see the error the day before.
@@E85_STI I've never seen that error. Good luck!
@@MatthewHaines thank you and I fixed it so even though the seller sold it to me with blades that were a few weeks old, once the weight of the drop mech showed that that front right props were probably unbalanced because the error came on twice for that side so I changed them out and fly in sport and no problems. I’m guessing the update is very sensitive to deviations of the props and motors.
agree 👍 ❤
Thanks for watching!
what wireless mic are using sir?
For this particular video I used a corded lavalier mic from Movo. (link in the video description).
After extensive testing of wireless mics though, I have settled on the Rode Wireless Go II for now. However, I will be testing another manufacturer's wireless system in an upcoming video soon, though.
I hope that answers your question! Thanks for your comment.
Great video, marketing is still king in the consumer retail market. Overstate minuscule differences and it's "kinda" legal until someone takes the time to take you to court over an under $20 item which happens like never. By the time you take them to court, they will have already taken the profits and invested them in various other LLC's to protect the capital from even a complete bankruptcy in the future. I know I know, its a horrible capitalist world :)
Thanks for your comment!
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Honestly, the DJI propellers sounded more subdued. Lower tone as you had mentioned, glass packed muffler ;). Fact is DJI puts allot into research and development and comes out with a top quality product over and over. This is one of the cases where you go OEM. It is what it is.
Agreed! Thanks for your comment.
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u recommend this over OEM?
If you’re just looking for a color change, sure. But otherwise, I don’t see a benefit from a performance standpoint. Also, they’re sharper than DJI props and more likely to cut you (I learned from experience when I “caught” a landing the wrong way).
@@MatthewHaines oh shit haha “killed by his drone”
Ok TY so much for share ur experience. I would receive my mini 2 this monday so I was just getting info about remove some noise from those propellers. But I figured out that nothing os like the OEM ones
@@eingelvf if you’ve watched the video, you’ll probably notice that the noise reduction is minuscule at best. And yes, those props cut my fingers enough to draw blood and leave a scar. Admittedly, I’ve never put my fingers into DJI props (and I’m not volunteering!). Enjoy your new Mini 2!
@@MatthewHaines TY Matt! Have a great rest of day!
The difference is barely detectable on a prop as small as the Mini 2. On Air 2, and even more on my Mavic 3 it is such a lower pitch that anyone can easily notice. More noticeable is the smoother sound with less "chop" if thats the right term. Anytime I put the OEM ones back, it sounds offensive, and I end up going back. Of course it'd much easier with quick release hubs. 🙄
Thanks for your comment. Yes, I agree, the OEM blades do sound "smoother". Less like a 'weed whacker'.
@@MatthewHaines LOL I actually meant the inverse. But this is limited to the bigger drones, a little smoother on Air 2, but like a Jaguar 5.3 liter v12 smooth on Mavic 3. I wonder if I can capture it, at 6-8 feet away. The stock props are not terrible... until you use MAS Steath for a good while. The very first ascent you do with stock, it's like a rattle almost or a flapping sound at approximately 100-120hz, and comes and goes, due to some variable I can't identify, perhaps simply wind. 😀 Put the Stealth back on, carefully- the big ones are also razor sharp on both leading and trailing edges- and whoosh... so nice and smooth, it can easily outperform the "fwrawgh fwrawgh fwrawgh fwrawgh fwrawgh fwrawgh" -hope I spelled that right! the rubber tipped DJI Mavic 3 props. The new Enterprise version of Mavic 3 has longer versions of those orange rubber(ish) tips; I want to see if they are compatible with my Mavic 3 Cine. Same size so I am thinking "yes" but we shall see.
FYI the other comment about Mini 3 Pro is correct. It's not only quiet, it is the quietest Drone I've ever experienced. The quietest RC craft of ANY TYPE. Just extraordinary. At Hover, it is an order of magnitude quite than anything out there. THAT is a STEALTH drone, and I use it for Real Estate footage - when I don't need to have discussion while working. Insanely quiet. Did I mention it's quiet? Lol 😆
@@BlairAir my bad. I meant the aftermarket MAS props sound smoother. You’re right about them being sharp though. I grabbed my Mini 2 on the beach and accidentally put my fingers through the props. Cut my fingertips quite deeply! “Cuts the Air, Cuts the Flesh!” Should be MÁS’ motto.
At least you now have cool baby blue props on your drone... LOL
Yeah! Thanks for your comment!
Well... crap... you just unsold me. I haven't even bought my Mini SE yet but was planning on buying those props. As you said, the other reviews were kinda fly by wire. No direct comparisons. Not going to bother now. Thanks! And if I had bought them, I would have gotten orange.
Maybe orange is more stealthy than blue? I’m really glad you found this helpful!
The aftermarket propellers aren't nearly as balanced as the dji ones, therefore will have worst flight control and faster wear on the motors.
You're probably right!
I see no reason for buying this props They are more expensive than the originals and the colours are too coloufull and shiny. I prefer to go stealthy. Sound noise is diferent frequency but not quiter.
Agreed. If you don't like the way they look, there's no reason to switch.
A Little bit more noisy than the dji propellers.
Yeah!
Jeśli nie ma różnicy więc po co przepłacać 🤔🤷♂️Greetings from Polish
I agree! Unless you simply want a different color. Thanks for your comment.
Zgadzam się! Chyba że po prostu chcesz inny kolor. Dzięki za komentarz.
Buy it for color because you like the color. Everything else is a scam. A scam because they make claims, not because it’s a bad product.
You have summed it up very succinctly.
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That's a lot of diamond-star-kiss emojis! I don't feel worthy....
Low noise is better
Low noise is better, I agree. It's a shame these aren't any less noisy than the DJI ones.
@@MatthewHaines i just got a mini 3 pro and its so quiet which means no one rings police.
@@beginization that’s great to hear! (No pun intended.) Did you previously have a Mini 2 to compare it with?
@@MatthewHaines no I was only aware of name. I went to youtube to see what people say, I live next to a 2 million acre national park with water falls and canyons and was looking for a drone that is reliable.
I am disabled in work accident and drones were just starting and I said to my brother this will change the world.
bleh, the best stealth is DJI original parts and a squatch.
“Squatch”…as in Bigfoot?
@@MatthewHaines yup, just a bit of humor there.
Next they will claim the military use them lol , when ever a product uses these tatics to sell stuff by putting fulse claims on thier product it makes me go get other products , funny how a company with hostory in RC community would make fulse claims to sell stuff , instead of just trusting thier customer base , reputation means more then sales in my opinion and this company just showed they will do what ever they can to sell a product , see if they had just put ,,,been makeing RC blades since the 60s on the box i would be more intersted in buying them , instead they claim thier stealthy , come on guys if they could make silent blades dont you think they would have them on real vehicles first , planes , helicopters,,air boats .....ya to believe they will be stealthy is silly really ....i did find a way to make it stealthy though , go to 100feet elevation.....done .......
Yeah I agree. Reputation is everything! Thanks for your comment.