Back engines seems weaker than the front. Won´t Take off.

[slup]

I would suggest to swap the props at the front with those at the back and try again. Make sure that thread lockers are applied to the threads of the screws holding the props and that the thread lockers are fully cured before flying.

Agree to that ... the weakest part that can give effect like this is so far the props, they can be slightly damaged, bent or swivel to tightly. If you have new ones to test, swap to see if it's any difference.

 

[sar104]

I would suggest to swap the props at the front with those at the back and try again. Make sure that thread lockers are applied to the threads of the screws holding the props and that the thread lockers are fully cured before flying.

Agree to that ... the weakest part that can give effect like this is so far the props, they can be slightly damaged, bent or swivel to tightly. If you have new ones to test, swap to see if it's any difference.

This seems very likely to be connected to all the other reports of low tilt values and uncommanded descents. There have been unverified (as far as I know) reports that some of these have been caused by bad props, although that wouldn't explain why the effect comes and goes in some flights.

It may be necessary also to question the validity of the motor speed measurements - if there were intermittent problems with the FC measurement or reporting of rear motor speeds then that would potentially account for all the observed behaviors.

 

[Tornestam]

I would suggest to swap the props at the front with those at the back and try again. Make sure that thread lockers are applied to the threads of the screws holding the props and that the thread lockers are fully cured before flying.

I'll try tomorrow when there is light.
Thx, T

 

[new2mavic]

I'll try tomorrow when there is light.
Thx, T

For your reference. It's my Mini : Mavic Mini prop has unstable shape ?

 

[Saigondroner]

I am new to the forum and to drone flying and just went back from Bali (32 degrees) had som fun with the MM it flew pretty good. Had a notice that engines were maxed but thought they were over heated flying for almost 20 min in the sunset. Came back to Stockholm, Sweden with 0-2 degrees. I took it out and did all IMU and Compass calibrations and it worked good. Got som messages about a zone in the city and about 10k from the airport. Put flight level to 30m...When I was starting and trying to do the app-assisted take off it seems like the front engines were overpowering the rear. Result was a tilt and rear propellers touched the ground and MM shut down. I tried again but the issue w back engines working too weak and resulting in NO Take off. Anyone hade the same?View attachment 93216

Hello!

Some of your problems might be related to the weather & wind conditions from where you fly. I had very bad flight control problems in Vasastan, and they disappeared when in Liljeholmen (My office is next to Metro). Now I have a place across the bridge in Hornstull, and cannot safely take off at all. I use a Mavic 1 Pro most days; my Mini only picks up 6 satellites in Hornstull.

Best,

 

[mavicn00b]

The mini also seems to struggle in higher elevation areas (MSL) due to air density - is the area you fly in at high elevation ?

 

[sar104]

Hello!

Some of your problems might be related to the weather & wind conditions from where you fly. I had very bad flight control problems in Vasastan, and they disappeared when in Liljeholmen (My office is next to Metro). Now I have a place across the bridge in Hornstull, and cannot safely take off at all. I use a Mavic 1 Pro most days; my Mini only picks up 6 satellites in Hornstull.

Best,

It wasn't wind related.

The mini also seems to struggle in higher elevation areas (MSL) due to air density - is the area you fly in at high elevation ?

The flight was at sea level.

 

[milo4270]

I am new to the forum and to drone flying and just went back from Bali (32 degrees) had som fun with the MM it flew pretty good. Had a notice that engines were maxed but thought they were over heated flying for almost 20 min in the sunset. Came back to Stockholm, Sweden with 0-2 degrees. I took it out and did all IMU and Compass calibrations and it worked good. Got som messages about a zone in the city and about 10k from the airport. Put flight level to 30m...When I was starting and trying to do the app-assisted take off it seems like the front engines were overpowering the rear. Result was a tilt and rear propellers touched the ground and MM shut down. I tried again but the issue w back engines working too weak and resulting in NO Take off. Anyone hade the same?View attachment 93216

Check your propellor arrangement you have two pairs that have double stripes on the end, and two pairs that have a single stripe. you need the pairs matched diagonally. As in one pair two stripe on left and one stripe on the right in front, one stripe on left, and two stripe on right in back. I had this issue yesterday and this was the fix.

 

[Tornestam]

I am new to the forum and to drone flying and just went back from Bali (32 degrees) had som fun with the MM it flew pretty good. Had a notice that engines were maxed but thought they were over heated flying for almost 20 min in the sunset. Came back to Stockholm, Sweden with 0-2 degrees. I took it out and did all IMU and Compass calibrations and it worked good. Got som messages about a zone in the city and about 10k from the airport. Put flight level to 30m...When I was starting and trying to do the app-assisted take off it seems like the front engines were overpowering the rear. Result was a tilt and rear propellers touched the ground and MM shut down. I tried again but the issue w back engines working too weak and resulting in NO Take off. Anyone hade the same?View attachment 93216

 

[Tornestam]

Hi guys, long time no reply. I sent my drone for check and repair (shipped to the Netherlands.). They checked it and said I had gotten sand in the right back engine. It was pilot usage error. I should have had a matt to land on instead of sandy pavement... No warranty, cost 112 Euro for repair , parts, and shipping to Stockholm Sweden. Now it flies great and I am a happy, a little less "wealthy" Mavic Mini flyer. I would like to take this opportunity to thank you all for engaging. Peace! /Peter
I am much happier than I look

 

[Starz]

Good that you can fly again. I have always been watchful of where the takeoff point is for just the reason you have been through. Dirt/sand isn’t good for any mechanical device. I’ve used the floor mat out of my truck on many occasions.

 

[Ralle]

Hi guys, long time no reply. I sent my drone for check and repair (shipped to the Netherlands.). They checked it and said I had gotten sand in the right back engine. It was pilot usage error. I should have had a matt to land on instead of sandy pavement... No warranty, cost 112 Euro for repair , parts, and shipping to Stockholm Sweden. Now it flies great and I am a happy, a little less "wealthy" Mavic Mini flyer. I would like to take this opportunity to thank you all for engaging. Peace! /Peter
I am much happier than I look View attachment 98518

Should the motor protective covers have been helpful in this case? Even if others are not recommend this matter myself thinking about when I live in the land where all kind of dust problem is. Sorry bad English ,Google translator

 

[Starz]

Dust itself may not be as bad as granular material that would impede the motor’s ability to spin. Either way, something to be concerned with.

 

[Ralle]

Dust itself may not be as bad as granular material that would impede the motor’s ability to spin. Either way, something to be concerned with.

The cover would block?

 

[Starz]

The cover would certainly eliminate most of what would enter from that area, but then there is the bottom of the bell also.

 

[Ralle]

The cover would certainly eliminate most of what would enter from that area, but then there is the bottom of the bell also. View attachment 98548

That is true ?

 

[OregonEd]

That is true ?

If you impede the air flow the motor temperature will increase! So it kind of depends on how you fly? An easy temperature check is, immediately after landing touch the motor bells on your lip. If it is warm, then that is normal. If it feels HOT, not good, “you will know”. Enjoy