MGM Low Voltage Cut Off - Owners READ

[Topas]

Originally Posted by lutach

TBH that is the only setting that I'm still having trouble understanding. How hard is you brakes now? Did you set the hardness of the brake separate from the deceleration? I'll try what you did, but I'm lost on that setting and I thought I had the programming done right.

Look at the image above. This is my actual setting.

[lutach]

Originally Posted by Topas

This is the way I cured the problem too. (I set the brake to very hard1)

I will inform mgm about that issue - I am sure they will fix it fast !

Grisa will find that interesting as it will be the second e-mail regarding this LOL. I'm going to try it now and see what happens.

[Topas]

Originally Posted by lutach

Grisa will find that interesting as it will be the second e-mail regarding this LOL. I'm going to try it now and see what happens.

That is interesting because I am using already the new version 3.21 !

[lutach]

Originally Posted by Topas

That is interesting because I am using already the new version 3.21 !

I made a video of the problem and I'm going to upload it in youtube.

Here are the settings I have now:

A: 3
B: 5
C: 1
D: 1
E: 1
F: 6
G: 1
H: 1
I: 2
J: 1

Try to put the "Automatic correction of neutral" at YES and try it again.

And as i can see, with the newer version, we have the "No Brake" option?
That's good when we use mechanical brake!!

Topas, Freewheel should be set to 'yes' right?

[lutach]

Originally Posted by david lamontagn

Try to put the "Automatic correction of neutral" at YES and try it again.

And as i can see, with the newer version, we have the "No Brake" option?
That's good when we use mechanical brake!!

Actually I just double checked the check marks on the manual and I have H as YES. I sent an e-mail to Mr. Grisa and I will wait to see what he'll say and I also sent him a link to this thread.

[Topas]

Look at this funny current values ;)

If my eagletree logger is correct, the max current was 89 A ... (10 samples per second)

300A or 180A is impossible for my old 14cell nimh !

[lutach]

Originally Posted by Topas

Look at this funny current values ;)

If my eagletree logger is correct, the max current was 89 A ... (10 samples per second)

300A or 180A is impossible for my old 14cell nimh !

That is something. I received an e-mail from Mr. Grisa and he said for me to set the neutral range at 12%. That didn't work. I will make a new video of everything from programming to the problem.

[Topas]

Originally Posted by lutach

That is something. I received an e-mail from Mr. Grisa and he said for me to set the neutral range at 12%. That didn't work. I will make a new video of everything from programming to the problem.

It didn´t work for me either . But I did not get a reply to my email yet .

[lutach]

Originally Posted by Topas

It didn´t work for me either . But I did not get a reply to my email yet .

Yours is running good now after you you made the change in the brake setting, but did you set it for B: 7 or B: 5? I'm going to try a few other changes to see if it helps.

[lutach]

I tried to see if adding drag brake would help, but now the car just accelerates without me applying brakes. The faster it goes in forward the faster it'll spin when drag brake is applied.

[Topas]

Originally Posted by lutach

Yours is running good now after you you made the change in the brake setting, but did you set it for B: 7 or B: 5? I'm going to try a few other changes to see if it helps.

I don´t know what you mean with B 7 or B 5 - don´t you see my image of the settings ?

[lutach]

Originally Posted by Topas

I don´t know what you mean with B 7 or B 5 - don´t you see my image of the settings ?

I'm not using the PC to program it. The manual has B as Brake and option B: 5in the manual is Very Hard/1,3 sec. and B: 7 doesn't have a brake value, but it shows the 2,3 sec., so it seems that one can actually get more options with the PC programming.

[Topas]

News about low voltage cutoff :

Now I tried a LIPO-setup with racing modus turned off and had the same problems (rpm was reduced when I gave full throttle) .
The eagletree logger indicated that the voltage went to 2,89 V/cell on full throttle. I think this won´t be a problem for a short period and I don´t know why the ESC cuts off or reduces the rpm.
So there are three solutions for the problem:

1. Turn on racemode
2. Buy better LIPOS
3. MGM has to improve their algorithm of low voltage detection