Hello,

it is very important that there is no ESC fan from the HobbyWing on your helicopter. This is what you said is on the model.
When there is ESC fan then half of the features might not work properly in the Spirit unit, because unit thinks motor is running as it produces a lot of vibrations.
GeoLink and also Spirit unit is for example also starting logging depending on this measurement when motor is on and off depending on vibration level.
And it also calculate lift off altitude. So if you are using the ESC fan then it is unable to measure lift off altitude and then all functions such as Altitude Limit, RTH (altitude maintaining) or Auto Landing will not work properly, because it can`t know where 0 meter altitude actually is.

Altitude Limit and all GeoLink altitude functions are based mainly on GPS/GNSS measurement so it does not matter if barometer is imprecise or precise. However it use 3 different altitude readings from different sensors to be very precise. But none will work well if there is no moment when model is calm - If Vibration Level is not 0% before motor is started.

But there is another Barometer in the SPIRIT GT

Also if you are using the ESC fan with so high vibrations then GeoLink and Spirit unit logging will not work correctly too.

HobbyWing and some very cheap ESC fans are unfortunately not balanced and are producing vibrations like a running motor.
You can check the Vibration Level in the RealTime logging or telemetry.

4ds files carry only settings of the unit, but Spirit GT and GTR can record thousands of logs from actual flights. If you can provide them then it is possible to see what the unit see.

Altitude Limit should engage faster than what is set in case the model is flying fast, depending on how Triggering Acceleration parameter is set. So it can engage in 30 meters instead of 20 meters for example to avoid crash in high speed. Because in high speed model require more time to recover.

Looks, you not understood my description.The model was not flying fast anny time by activation of the RTH function, it was all the time Hovering on all the RTH Test's.

Dr. Fleming: It seems that all your problems could be caused by this, because for you also RealTime logging does not work properly which is clear sign that something is wrong with the ESC fan. So if you are using ESC fan, please retry it without ESC fan.

Then please send flight log from the Spirit GT and GeoLink, it will be very well visible what is happening and we can find at which moment the problem is ocurring.
Please log GeoLink Position - Latitude/Longitude, Altitude, Speed, Vibration Level and all Channels.
Enable only Altitude Limit and disable all other GeoLink features before testing.

Hello,

you sent one log from GeoLink, but RealTime log is still missing. You have not read guide that I sent maybe for RealTime logging.
From RealTime log you can find many important things because it can record everything, including channel values and vibration level.

I am sending the guide again:
http://manual.spirit-system.com/index.p ... me_Logging

It depends on you always, we are trying to help you all the time, but we need at least particular data. Now we have at least one GeoLink log from you. If it can work for thousands pilots around the world that are using GeoLink daily, I believe it can work well for you too.
If you can provide more details, it will be very helpful and can find what is going on.

If you dont have time or you are afraid of flying, you can send us your GeoLink module and we can check it for free. I think we can`t do more. We are testing all GeoLink features almost daily to make sure it can work on as many helicopters as possible.
Or you can wait for new update if we will find any error. At the moment we are very satisfied with results. We are sure it can work that well also for you once we will find more details.

First from all I recommend to disable all features (in the Channels window and GeoLink Aid Tab) except one you want to test. Because from our experience all people with some problem had enabled almost all possible features and then were confused how it actually works.
So in case of some strange problem, it is always better to disable, unplug everything that is not absolutely needed to make things as simple as possible. Not complicated.
So only Altitude Limit enabled, not other feature. This will make it much more easy.

I am developer of the system so I know what is needed in order to proceed with the problem.
I written you many times what is needed to do, often I even asked 10 times for very simple details about model, but it was always big problem. Very often the only thing is you are filling threads with words "it does not work" and "helicopters crashed".
So it is sometimes very hard to help.
I was writing to turn off all functions, because it is always better to make certain it can in no case affect the rest. Because I and also often pilots can`t be sure that in some flight mode radio will not engage such feature.
Testing on the bench is often different with what is happening in the air.

I made many times suggestions to you, but you often took your own route instead. And I am repeating the same things, because you still didnt do this obviously. It does not matter if you fly 25 years or 1 year. Pilot that has less experience can set things more precisely. And I can see it very often that very experienced pilots can`t do simple things or overlook some and then they are convinced how bad some product is. Simple because he know how it should be done.
So please do what I am asking if you need help.

If you can`t see any RealTime log then please clear all logs first - in the RealTime Log Viewer. Then you have to see a log after each flight. If not, please disconnect ESC fan.

I have not replied to your question, because I have no reply to answer. This mean I dont know which ESC fan is compatible. We reported the issue to HobbyWing few years ago. So we hope they will fix it soon. We will find compatible ESC fan when we find a time for testing them.
As far as we know there was never any issue with other brands, if the ESC was not damaged in some way. I believe that almost any fan that has 30x30mm rated for 12V will work well.
Or you can get fan directly for R/C models such as this:
https://profimodel.cz/cs/prislusenstvi/ ... cB#295622D
However I recommend fan with a lower RPM such as this:
https://www.palmat.cz/ventilator-12v--3 ... 00-ot-min/
It is much cheaper too.

Have you clicked at the "Clear Logs" button? Please answer to this question with "Yes/No". Please see my attachment which button I mean. It does not matter whether there is log or not. I am trying to help you with the issue why you can't see the log.

Then if you can't see recorded logs after a flight, please verify that logging is really enabled in the Logging Configuration - see attachment.

I have not replied to your question, because I have no reply to answer. This mean I dont know which ESC fan is compatible. We reported the issue to HobbyWing few years ago. So we hope they will fix it soon. We will find compatible ESC fan when we find a time for testing them.
As far as we know there was never any issue with other brands, if the ESC was not damaged in some way. I believe that almost any fan that has 30x30mm rated for 12V will work well.
Or you can get fan directly for R/C models such as this:
https://profimodel.cz/cs/prislusenstvi/ ... cB#295622D
However I recommend fan with a lower RPM such as this:
https://www.palmat.cz/ventilator-12v--3 ... 00-ot-min/
It is much cheaper too.

Have you clicked at the "Clear Logs" button? Please answer to this question with "Yes/No". Please see my attachment which button I mean. It does not matter whether there is log or not. I am trying to help you with the issue why you can't see the log.

Then if you can't see recorded logs after a flight, please verify that logging is really enabled in the Logging Configuration - see attachment.