Trouble with MGM 22418 - HELP!!!

[bdebde]

It is too bad the MGM doesn't give an accurate amp value, it would really be helpful. I have found with my set ups (just a guess), that the actual value may be around 1/3 of the reading you get there.

Can you gear down any and see what happens?

I know I was at my wits end with the MGM for a while, after trying 3 motors and 2 different 20c batteries, and still no difference. I was to the point where I thought that something was wrong with the controller. Finally got a Neu 25c battery and it works OK now. It is drivable now after all the messing around and finally disabling reverse, but I will likely replace it with a MMM when they come out, just because the MGM is a bit quirky.

[jhautz]

I ran an eagle tree on my MGM at one time trying to diagnose the exact same issue. At the time I had 3 MGMs. All 3 did the same thing. They would start cutting out after only 5 minutes or so of runn on my 20C packs and in some cases started doing it right away if I set the motor spool up time to a low value to really give it punch. What I found was the eagle tree was telling me that the owest voltage it recorded was 3.4v/cell and around 110Amps. Then I took the exact same buggy and swapped out the MGM for a Quark 125 and it the cutting out went away and it ran perfectly. With the Quark I was able to hit spikes as hig as 130amps and the voltage dropped down to 4.25v/cell. When the quark started triggering the LVC I took the 5000mah pack and charged it all the way and put back aroun 4750mah. With the MGM if I stopped as soon as the LVC kicked in I could only get 1100mah or so back in.

In all honesty on the track I didnt really even notice the issue cuz I set the spool up time to a higher value and it pretty much masked the problem. I noticed it more when I was bashing and wanted to do high speed runs and drag races on pavement.

Anyway... I guess I kinda started to ramble here.... To summarize: I found the LVC on the MGMs to be more like a 3.4v/cell cut off rather than tthe 3.1v they report. The amp reading on the MGM software was about 4 times what I measured with the eagle tree.
A reading on my MGM of around 490A measured only around 120A on the eagle tree.