Had a unbelievable experience last night . Was flying my mini 3 pro over water in sport mode and just as I reached where I was located on the shore I released the throttle and as the drone slowed down it started shaking and fell into some long grass nearby . It was only a few feet in the air at the time . When I retrieved the drone (undamaged) I immediately noticed one of the left rear props and retaining screws were missing . Don't know if the prop came off just as I released the throttle or did it actually fly unbalanced for a bit over the water. Could it fly with a single prop missing ? Did'nt see it come off . Lesson learned - to check the tightness of the screws before each flight .Had changed over to Master airscrew props recently , dunno if this had anything to do with it. If it threw it just as I got to the homepoint then I'm buying a lottery ticket this week. Check your retaining screws folks .Pack a jewelers screw driver in your kit.
Mini 3 pro lost prop mid flight
- Thread starter Mazdaman323lx
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If you can, please post the .txt flight log and DAT, they would be interesting.
DO NOT sync and probably DO NOT use the airdata app to access those logs. Instead connect your controller or phone to a computer via USB cable and retrieve the logs via that method and save them to computer.
Syncing with DJI seems to delete the DAT but I don't know if the process Airdata use does the same. With this log it's not something you would wish to experiment with until the DAT is safe.
Several Mini 3 seem to have lost a prop blade and in one case the blade was found where the misbehaviour started so that is a definite prop loss.
DO NOT sync and probably DO NOT use the airdata app to access those logs. Instead connect your controller or phone to a computer via USB cable and retrieve the logs via that method and save them to computer.
Syncing with DJI seems to delete the DAT but I don't know if the process Airdata use does the same. With this log it's not something you would wish to experiment with until the DAT is safe.
Several Mini 3 seem to have lost a prop blade and in one case the blade was found where the misbehaviour started so that is a definite prop loss.
If isn’t a DJI prop or battery it’s not going on my drone. Those are the most critical components on a drone failure of ether is a disaster. BUY THAT LOTTERY TICKET
waynorth
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There have been reports here on the forum that the screws supplied with Master airscrew propellers have broken easily, some even experienced that they snapped when tightening them.
BobaFut
Well-Known Member
Stock Avata props are notorious for exploding, so quality isn't always a guarantee. That said, for a camera drone I would definitely keep everything OEM.If isn’t a DJI prop or battery it’s not going on my drone. Those are the most critical components on a drone failure of ether is a disaster. BUY THAT LOTTERY TICKET
waynorth
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I don't know if they fit.
Someone had been in contact with Master airscrew and was told they would start supplying better screws.
I'd be hesitant to use loctite as I be afraid i'd strip the crosshead or shear the bolt itself if I ever had to change a prop
I think DJI RC\Android\data\dji.go.v5\files\FlightRecord
and DJI RC\Android\data\dji.go.v5\files\FlightRecord\MCDATFlightrecord
thought I am not sure what is before "DJI RC" but possibly "Computer\" and amybe something else
see also
post #7 in Can anyone help me retrieve my flight logs?
and
HOW TO: Copy TXT flight logs from DJI Smart Controller, RC, RC Pro, RC2, or RC Plus remote controller
Overview Follow these instructions to copy TXT flight logs from the following DJI remote controllers: DJI Smart Controller DJI RC DJI RC Pro DJI RC 2 DJI RC Plus Before getting started, do the following: Grab a USB to USB-C cable that supports file transfers (some cables are only able to...
forum.phantomhelp.com
This would be my concern as well. Coupled with the little tiny OEM screw driver handle- Strip City.
with the Mini3 pro and other mini 3 ,compared to the original Mavic Mini and mini 2 family of drones ,the way the props are fitted onto the motors is quite different
yes i know they both use screws ,but the way those screws hold the props on ,is fundamentally quite different
with the MM and Mini 2 the actual screw itself, forms the pivot point for the prop ,as well as attaching it to the motor housing
because of this ,although the screws themselves are still quite small they are ,huge when compared to the extremely tiny screws that the Mini 3 pro uses
all that the screw has to do is form a barrier to stop the prop from coming off the actual pivot point
please dont overtighten those tiny screws ,stop exerting torque to the screw as soon as the head of the screw contacts the pivot point ,applying to much force just puts the screw head under excessive stress and as MAS found out this resulted in breakages because of the small size of the screw ,and quite possibly the material used to make them ,and even the manufacturing process used to form them
there is no real reason for the screw to become loose during use, as there is very little force being applied to it from the props, to cause it to unscrew
the screws do have a tiny bit of thread lock on them to act as a vibration barrier between the threads of the screw and pivot point thread
yes i know they both use screws ,but the way those screws hold the props on ,is fundamentally quite different
with the MM and Mini 2 the actual screw itself, forms the pivot point for the prop ,as well as attaching it to the motor housing
because of this ,although the screws themselves are still quite small they are ,huge when compared to the extremely tiny screws that the Mini 3 pro uses
all that the screw has to do is form a barrier to stop the prop from coming off the actual pivot point
please dont overtighten those tiny screws ,stop exerting torque to the screw as soon as the head of the screw contacts the pivot point ,applying to much force just puts the screw head under excessive stress and as MAS found out this resulted in breakages because of the small size of the screw ,and quite possibly the material used to make them ,and even the manufacturing process used to form them
there is no real reason for the screw to become loose during use, as there is very little force being applied to it from the props, to cause it to unscrew
the screws do have a tiny bit of thread lock on them to act as a vibration barrier between the threads of the screw and pivot point thread
They're supplied with thread lock already applied to them? DJI parts of MAS parts or both?
I have seen mention that the Mini 3 reverted to the 'old' style screw with a shoulder and in so doing did away with the Pro's pivot as part of the motor's rotor.
Eagle Eye 62
Well-Known Member
It's just a poor design in my opinion. The screws are just too small and the tiny heads make them hard to properly tighten. They are also really easy to strip if you are not careful.
IronSky1
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Be carefull when pulling Mini out of case I have had it catch and crack a prop around the hub. This is hard to see, On take off Mini went out of controll. I crashed into concrete total loss. DJI Care helped.
I also do not put in case unless I have to. I hand all my small drones on wall in ready to fly position.
I also do not put in case unless I have to. I hand all my small drones on wall in ready to fly position.
Droning on and on...
Well-Known Member
No they're not.
Droning on and on...
Well-Known Member
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