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-   -   MGM Low Voltage Cut Off - Owners READ (https://www.rc-monster.com/forum/showthread.php?t=10153)

86ragtopstang 03.08.2008 08:42 AM

im still trying to get mgm to respond to my emails asking for info to ship 2 of the 16018's to them.

orangecrush 03.08.2008 08:50 AM

Quote:

Originally Posted by Topas (Post 153834)
News about low voltage cutoff :



1. Turn on racemode

That's the method I'm gonna try. I bought a lipo saver low voltage cutoff from mike but it came with Dean's ends on it. (I had converted all my ends to the new VXL ends by Traxxas)

I've decided to go back to Deans so I'm waiting for an order to come in so I can install the LVC.

Hopefully that'll cure that problem.

david lamontagn 03.08.2008 09:34 AM

So as i can see, the new 3.21 version that i'll suppose to recieve in my 16018 will not solve the problem?????

To bad....
But with this new SW version, i'll can download futur version myself, and i hope that MGM will finaly able to exit a software who'll allow their high $$$$ controller to be as reliable than a little $100.00 Mamba max:whistle:

Topas 03.08.2008 10:12 AM

Maybe MGM will argue that the cut off is correct, because voltage is too low for a lipo.

When I will receive my new batteries I can post more facts about this problem.

But : My MGM ESC runs very smooth and cold. I hope this is only a software issue. It maybe a hardware problem because the current values are too high. I donīt know how they measure it, but 300 A /peak out of old cells is impossible.

david lamontagn 03.08.2008 04:24 PM

So in conclusion, you can have the latest SW version, but the best thing to do with this controller is to run it in race mode with an external li-po saver.

That's it that's all:neutral:

Topas 03.08.2008 04:33 PM

Quote:

Originally Posted by david lamontagn (Post 153912)
So in conclusion, you can have the latest SW version, but the best thing to do with this controller is to run it in race mode with an external li-po saver.

That's it that's all:neutral:

I donīt think so ... if you have good lipos which donīt go under 3,2 V / cell under the highest load you donīt have to enable the racing mode . Tomorrow I will test a setup with 5s on a feigao 8xl. This lipos are brand new from maxamps. They will easily be able to deliver 100 A ! So stay tuned ;)

david lamontagn 03.08.2008 05:41 PM

Good, but i only run on 4s and my curent is suppose to be higher. I think to buy another li-po this spring, and this will be a Flightpower 5 or 6s. Like that the curent will be lower.

And yes i stay tune, realy want to know how your controller run.:yes:

Thank you buddy!!

jhautz 03.08.2008 06:09 PM

If the lipos are droping below 3v/cell then that truly is a problem with the lipos being to weak for the setup. I dont see this as the problem the MGM claimed to be the overcurent kicking in to early do to software probems.

I would hold judgment on the software fix untill someone can test the new software with lipos that can proper voltage under load.

Topas 03.09.2008 04:51 AM

Today I tried my new 5s lipo - setup with racemode turned off .
I did not have any problems - the emaxx was incredibly fast !
So the cut off was really a problem of weak lipos.

fkadir 03.09.2008 07:03 AM

Pheww, thats a relieve. Anyone received their upgraded controllers from MGM yet? I hope mine comes in soon. Supposed to have left MGM last Monday but so far no tracking ID or word from MGM yet.

hobbimaster 03.09.2008 08:36 AM

So what are considered weak lipo's? I run 2 orion 4800's which are rated at 15c, or 74 amps. I have yet to experience these cut-out issues on lipo mode. I have it set to reduce RPM, 4s.

Topas 03.09.2008 08:54 AM

Quote:

Originally Posted by hobbimaster (Post 154030)
So what are considered weak lipo's? I run 2 orion 4800's which are rated at 15c, or 74 amps. I have yet to experience these cut-out issues on lipo mode. I have it set to reduce RPM, 4s.

Weight of your car ?
Gearing ?
Motor ?

hobbimaster 03.09.2008 09:24 AM

My Emaxx is new, stock chassis. My gearing is 68/20, Neu 1515 1y motor. Are these LV problems related to pushing the MGM hard making it cut out? I geared conservitive for a little over 30+ mph.

david lamontagn 03.09.2008 09:42 AM

Quote:

Originally Posted by fkadir (Post 154028)
Pheww, thats a relieve. Anyone received their upgraded controllers from MGM yet? I hope mine comes in soon. Supposed to have left MGM last Monday but so far no tracking ID or word from MGM yet.

Same thing for me, left MGM last monday, any tracking, any news from Grisa........

That's smell bad....

Topas 03.09.2008 10:02 AM

Quote:

Originally Posted by hobbimaster (Post 154033)
My Emaxx is new, stock chassis. My gearing is 68/20, Neu 1515 1y motor. Are these LV problems related to pushing the MGM hard making it cut out? I geared conservitive for a little over 30+ mph.

This LIPO is exactly too weak for your emaxx !!!


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