This is what can happens with new original props in some conditions. Maybe DJI can make custom carbon props for Mini? I will be happy to buy them!

Pashi, I flu 38 miles  with the ones that came with the Mini and the propellers were still good had to changed them because I was getting a Not Enough Force/ESC Error (repeated 41 times) because of all the crashes into tree branches, no problems after I changed them,  they make good propellers Wish they would make color ones makes the Mini look cool!

Richard Hopkins Posted at 3-24 02:50
Pashi, I flu 38 miles  with the ones that came with the Mini and the propellers were still good had to changed them because I was getting a Not Enough Force/ESC Error (repeated 41 times) because of all the crashes into tree branches, no problems after I changed them,  they make good propellers Wish they would make color ones makes the Mini look cool!

I talking not about coolness but about safety. First rule of Aviation all over the World - Safety First! If you didn't noticed - there is a flutter effect of the blades in this video and they hitting body of the multicopter.

Richard Hopkins Posted at 3-24 02:50
Pashi, I flu 38 miles  with the ones that came with the Mini and the propellers were still good had to changed them because I was getting a Not Enough Force/ESC Error (repeated 41 times) because of all the crashes into tree branches, no problems after I changed them,  they make good propellers Wish they would make color ones makes the Mini look cool!

Our experience was a little difference. I changed mine about a week after I got my mini because I gently kissed a wall and the edge of 2 of them were rough. Better safe than sorry.

The upside is that since I flew less than 1 mile on OEM props, I've never ONCE had the "Not enough force" error. Yes, it's to a scientific datapoint but I think the aftermarket props are actually better. Better at least than the ones that ship ON the  mini.

Cheers!
=C=

Why did DJI put soft foam in the front arms? Stiffer inserts, as already described here, are already in use. Unfortunately no reports about it ...

The video could confirm my guess.
#33 https://forum.dji.com/forum.php? ... p;page=1#pid2110367

I never noticed this problem on my Mini. I think it would be interesting to disassemble and check them for consistency against each other, I mean the two blades coming from the same propeller.

Cal Evans Posted at 3-24 04:15
Our experience was a little difference. I changed mine about a week after I got my mini because I gently kissed a wall and the edge of 2 of them were rough. Better safe than sorry.

The upside is that since I flew less than 1 mile on OEM props, I've never ONCE had the "Not enough force" error. Yes, it's to a scientific datapoint but I think the aftermarket props are actually better. Better at least than the ones that ship ON the  mini.

Can you please share a link which are you using?

Pashi Posted at 3-24 05:32
Can you please share a link which are you using?

https://www.amazon.com/gp/produc ... 0?ie=UTF8&psc=1

Just ordered my second box of them.
(Says more about my abilities as a pilot than the quality of the props)

Cheers!
=C=

Cal Evans Posted at 3-24 05:39
https://www.amazon.com/gp/product/B082DHM22B/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

Just ordered my second box of them.

Thanks! Will give them a try. But anyway, will be happy to see genuine DJI carbon fiber blades (or just tougher) And waiting for DJI to respond.

DaMa Posted at 3-24 04:22
Why did DJI put soft foam in the front arms? Stiffer inserts, as already described here, are already in use. Unfortunately no reports about it ...

I've heard they did it to save weight, to stay below th 250 gr

Pashi Posted at 3-24 05:45
Thanks! Will give them a try. But anyway, will be happy to see genuine DJI carbon fiber blades (or just tougher) And waiting for DJI to respond.

I would LOVE to see carbon fiber props, esp DJI. Would buy in a heartbeat.

=C=

Mavixx Posted at 3-24 06:25
I've heard they did it to save weight, to stay below th 250 gr

I had original DJI carbon fiber blades for Phantom 2 and they was few grams lighter than plastic ones. I believe they can deal with this task)

Pashi Posted at 3-24 03:45
I talking not about coolness but about safety. First rule of Aviation all over the World - Safety First! If you didn't noticed - there is a flutter effect of the blades in this video and they hitting body of the multicopter.

Only noticed it on one of the rotors. The left one if observing it head on.

Did you replace both props on one motor? It looks like your props are unbalanced. You are always intended to swap both of them at a time.

DaMa Posted at 3-24 04:31
The video could confirm my guess.
#33 https://forum.dji.com/forum.php?mod=viewthread&tid=211126&page=1#pid2110367

It's a plausible explanation: if a blade develops enough play, the way you indicated, under load the air resistance would cause it to get flatter and the tip might end up with negative pitch and be pushed down. And since they are paper-thin, they might bend to the point of touching the arm or body of the AC, which are below the prop mounting point. Whatever the reason, it's pretty clear from the video that the front-right props are flapping around like crazy.

I'm re-posting here below your image (and another) from the other thread, as it might help people visualizing what we're talking about:

120ccpm Posted at 3-24 17:24
It's a plausible explanation: if a blade develops enough play, the way you indicated, under load the air resistance would cause it to get flatter and the tip might end up with negative pitch and be pushed down. And since they are paper-thin, they might bend to the point of touching the arm or body of the AC, which are below the prop mounting point. Whatever the reason, it's pretty clear from the video that the front-right props are flapping around like crazy.

I'm re-posting here below your image (and another) from the other thread, as it might help people visualizing what we're talking about:

I also see in the video that the whole arm vibrates before the violent rashes occur. Propellers with no deformation (due to transportation) seem to be important. Why DJI stiffened the rear arms and not the front is a mystery to me – reduces damage in the event of a crash ??
Interference may play a role. Two such shaky issues that interact can actually be a problem for the IMU. The whole thing can happen undetected by the pilot....

By strong wind or high speed fluttering of the props will be normal. The currently forwarding prop. has more uplift than the backwarding prop.  Perhaps the props are to soft.

wictor Posted at 3-24 14:57
Did you replace both props on one motor? It looks like your props are unbalanced. You are always intended to swap both of them at a time.

They are new, out of the box, unchanged, no crashes.

Cal Evans Posted at 3-24 11:29
I would LOVE to see carbon fiber props, esp DJI. Would buy in a heartbeat.

=C=

To be honest I'm not sure if the carbon fiber is the way, because of small size, complicated manufacturing and high precision needed. But I believe that true upgrade props for MM still can be created.

It is a massive vibration in video above, I think there's more serious problem (wrong assembly or defective part?) than soft prop blade in this case...

Hi there, thank you for your suggestion, we'll forward your feedback to the related team.
However, why doesn't the Mavic Mini use the propellers used by other Mavic series aircraft instead of its own kind of propellers, hope the below answer helps you understand it:
To reduce weight and ensure performance, we designed these brand-new Mavic Mini propellers. Although the quick-release propellers are easy to remove, none of the quick-release propeller designs we tested could satisfy our weight requirement. After testing, we chose this propeller arrangement, which was the most durable design and frees users from frequent assembly and disassembly.
Should there any further questions, please feel free to let us know. We appreciate your kind understanding and support.

@ Natalia "... which was the most durable design..." The word "most" probably slipped in by mistake

DaMa Posted at 3-25 00:07
I also see in the video that the whole arm vibrates before the violent rashes occur. Propellers with no deformation (due to transportation) seem to be important. Why DJI stiffened the rear arms and not the front is a mystery to me – reduces damage in the event of a crash ??
Interference may play a role. Two such shaky issues that interact can actually be a problem for the IMU. The whole thing can happen undetected by the pilot....

The arm might be vibrating when the props begin to flutter. Very difficult to tell from the video what comes first.

Seems like I saw a vid of the MM, and the "flexiness" of the front arms was "shown", and it looked waay to flimsy in my opinion.
Add to the fact that the props can start to flutter, that can setup a very bad harmonic oscillation on the arms, which, can influence the load/demand on the esc's.
One can only tighten a banjo string so much...

120ccpm Posted at 3-25 08:01
The arm might be vibrating when the props begin to flutter. Very difficult to tell from the video what comes first.

That's why I wrote "... before the violent rashes occur". What starts there first? Both affect each other.

I think addition of carbon fiber will not affect the weight because old DJI Phantom 2 carbon fiber blades have less weight than plastic ones and was very tough.