Drone flipped in loiter mode on x11 motors with 25kg all up weight

i’m using x11 hobbywing motors with 41 inch propellers and 12s 27000 mah batteries two in parallel. the drone flew well in stabilize mode, no vibration and no problem in stabilize mode, but in loiter it flipped while being unstable in loiter mode. please help and advise. i am attaching the videos both of stabilize and loiter mode also i’m using here pro gps with pixhawk cube orange plus. In the below attachment the crash happens to be log 00000088.BIN file
https://drive.google.com/drive/folders/1HlWU3C8z--Oqa6Zx1ehWrFnIyyByRu9y?usp=drive_link

First edit your post and remove the All Caps. Then identify one (1) log where this was witnessed.

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Do what @dkemxr said first, and then use the Hoverit X11plus template in the ArduPilot methodic configurator software to fix your vehicle.

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thanks done. tomorrow i will check uploading the x11plus template from the methodic configurator

could you check log 00000088.BIN file in the attachment please, what could have gone wrong i have entered initial parameters from mission planner like prop size and cell count, it flew absolutely well in stabalize mode but in loiter just giving throttle enough to climb just above 50% it not even went above 0.5m altitude and it became unstable and crashed.

I know which parameters are wrong. And I know that using the software will fix them, no need to look at the log.

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So shall i use the methodic configurator using x11plus hover it template
also could you let me know which params are wrong coz already we broke three props yestarday today cant bear the same although i do take precautions to avoid crash please help me. did you checkout the video? is it that drone wt is underweight according to motors thrust ratio coz these motors have 30+kg thrust per arm and my all up weight is 25 kg.

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It is obvious a good thing to force people to use your software, but still I think it would be ethically more correct to indicate the issues, considering the potential consequences for failure, 25 kg copter is not a joke.

There are also people like me who follow and participate in these topics just to learn from problems and mistakes of others, so it would be a good idea to share your knowledge instead of referring bluntly to configurator.

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Totally agree! Transparency about potential issues is crucial. Sharing knowledge benefits everyone, not just those directly involved. A more open approach would be far more valuable than simply pointing to the configurator, which is not the only way to manage an ArduPilot-driven vehicle.

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I am all for transparency. I spend a lot of time creating the tutorials and the software. Both tutorials and software are free and open source. Fully transparent. With a lot of love to detail and accuracy.

That said you are free not to use them, and I am free to use my time as I see fit. I prefer to not repeat in the forum what the software does automatically.

On a 25Kg drone is irresponsible to not have a checklist-based, systematic approach to configure a vehicle. These are not toys and can be very dangerous.

So yes, do yourself a favor and use the software. That is the ethical thing to do.

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Unfortunately, although your software forces one to be methodical, I was not able to tune well my last test build, despite having followed all the steps, and I still do not know the reason for that. It does not mean that it is the fault of your software, and I will get to the bottom of my problem, but what you are saying is almost biblical, BELIEVE ME, AND YOU SHOULD SUCCEED… In the end, I could as well buy another DJI drone instead and BELIEVE them. I must admit as much as I hate DJI, I was not able to crash it or to loose it. So if you are worried about 25 kg drone being tuned not according to your configurator, then maybe we all should stick to DJI, tehy have T20, T40, T60. And BELIEVE ME, I had succesfully designed from scratch, built, and flown fixed wing planes with MTOW of 25 kg… I just started with quads a few months ago, so I need to learn a few things, not to trust blindly some configurator…

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Its not working i did try yesterday but by using hoverit x11 plus template the drone is completely out of control and not even taking off in stabilize on stock settings at least it was able to take off in stabilize could you please list out that where exactly i am wrong? my all up weight is 25 kg i am using x11 motors and 12s 54Ah lipo with no payload the drone arms are slightly declined due to the motors weight but i think that’s not an issue though as all foldable frames of agriculture drone does have that much of play. according to hobby wing these motors can produce 30kg/axis max thrust but recommended per axis thrust is 15kg/axis so i think I’m overpowered for the weight of the drone.

How sure are you that you followed them correctly?

It’s not blindly:

  • It has a detailed guide explaining what to do and why, you have read this already, I hope.
  • It has “reason” changed" for each parameter, you have seen this, I hope.
  • All, Its forced and derived decisions are on a single .JSON file, I already posted a link to it, but here it is again, very transparent.
  • the software requirement and architecture also explains in detail why the things work like they do. Read it and you will learn a thing or two.
  • And then there is all the ArduPilot wiki documentation.

The entire thing is transparent, but it’s a lot to learn.

It’s not some configurator:

It is the only configurator that exists with this set of features. So let’s improve it, shell we?

Post the files created by the configurator. Then we can evaluate if you used it correctly.

Ali , salve ! Erase everything and reconfigure again

I’m so sorry you have to go through this simply because some people are social misfits and can only code, but not engage in helpful conversation with others. I can’t imagine being so rude and uncaring as to withhold from another person the information they need and which I have, solely to feed my immature ego. This is common in the software world. But the positive side of experiences such as yours is people will see how you have been treated and may be inspired to create alternative software or to look for more professional solutions offered by those with fully formed adult egos. Good luck.
Update: I’ve thought about what I wrote and have decided that as written, I too was behaving in a similar fashion because I did not offer any solution. So, here is my suggestion for this situation. Maybe this could be a teaching moment where the mistake you made is revealed and then certain points are re-iterated in procedures so that people learn from what happened and why it happened. I can understand frustration at having to constantly tutor people over and over again when they don’t read the documentation OR do not understand possibly ambiguous documentation OR mis-understand it from the perspective of non-native language speakers. What might be crystal clear to you might be frosted glass to me. If I were a software author, this is the path I would take in this case. OR, charge a fee for assistance refundable if the problem is not resolved as promised.

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