MGM Low Voltage Cut Off - Owners READ

I ordered the Li-Saver, hopefully this fixes the problem. Still I would like to see a software fix for the LVC.

Anyone else using this method?

[mkrusedc]

Maybe I don't understand the problem. In Lipo cutoff mode under full acceleration the esc cuts out? My 160/18 does that in reduce RPM mode not in Cutoff mode, IIRC

Originally Posted by mkrusedc

Maybe I don't understand the problem. In Lipo cutoff mode under full acceleration the esc cuts out? My 160/18 does that in reduce RPM mode not in Cutoff mode, IIRC

Thats a new one for me, but just more evidence that the current LVC system for the MGM's needs to be updated

[jhautz]

Tne only bad part of te solution being new software is that in order to update a MGM it needs to be sent back to them. Its not like the Mamba where you can just download and install your own software update.

[mkrusedc]

BashOn sorry I got that backwards. I just checked. It does not cutoff with reduce RPM but does with the hard cutoff.

[bdebde]

Originally Posted by jhautz

Tne only bad part of te solution being new software is that in order to update a MGM it needs to be sent back to them. Its not like the Mamba where you can just download and install your own software update.

It should be doable with the PC software, USBcom and cc_02 cable, there is an option in the controller software. If only they would give us the updates for download.

Originally Posted by bdebde

It should be doable with the PC software, USBcom and cc_02 cable, there is an option in the controller software. If only they would give us the updates for download.

Ya, they definitely could do it, it’s a question of them wanting to. I would require them updating the PC software to allow it.

I've just order a trusty Mamba max, anyway, i only run on 4s and the main reason why i had buy a MGM it was the fact that MM oculd not run the Neu motor but now, with the software upgrade on the MM, i'am sure that it's a way better solution than the MGM. And when the MMM will be disponible, i'll order one too.
My MGM will stay sitting on the shelve for a will, and maybe drop in a 1/10 conversion latter.

Too bad for a $$$ 300.00 contoller..

Two thumbs up MGM

Son of a !@$#%#@!^!!!!!

Glad I got that off my chest...

I just went to take my Savage out. Setup the controller to reduce RPM, 6s Lipo (my lipo savaer won't be in for a few days) and Auto Tune. First attempt had to run home and get some pliers because the slipper was just spinning. Tightened slipper, hooked up battery, put on body and set her down. Pulled the throttle a bit and I hear a nice sizzling sound and poof, there is something coming out....

Stop the truck, pull the lid, cut the power. I plugged it back up to my laptop to see if it would connect (I have no idea why it mattered) and it did, settings were there and still correct.

My MGM is toast! I am so frustrated!! I guess I'll have to ship it off and maybe get it back by the end of summer.

It is so strange because literally nothing changed except I tightened the slipper. When it fried I was just softly starting it, not the usual throttle induced wheelie.

That sucks BashOn sorry to hear that..... my mgm is still going, only gripes are the dang brakes engaging when I let off throttle making it flip at times on lid in street :(... I was testing the lipo on cutoff setting and mine never seemed to make batts dip below like it has with others causing studdering lvc problems etc, I am running maxamps 2s and 3s 8000mah in series and I had my accel at .012 too ....

Seems the software/firmware in the MGMs are a bit dodgy. Will check out my new build tonite and report back findings if any. *Fingers Crossed*

Would 'reduce RPM' be a temporary fix for this issue instead of using 'cut-off'?

Originally Posted by fkadir

Would 'reduce RPM' be a temporary fix for this issue instead of using 'cut-off'?

For some the Reduce RPM setting is a solution. For me the reduce RPM setting reduced the RPMs even with a full pack. I had good punch, but little top end power. On cut off it would do just that and cut off on anything over around 1/3 throttle. Race mode seemed to give full power, though I never actually got to drive the truck in this mode. I only tested race mode while holding the truck off the ground. In race mode I got about 3000 more peak rpm versus the other modes.

Went for an initial run about 2 hours ago and got the same symptoms as you. The Motor will stop accelerating and cut out at about 1/2 throttle if i jab the throttle fast, I need to slowly accelerate for it not to cut off power. This is with using the flightpower 25C 5000mah battery so I dunt think quoality of battery packs should come into play.

seems like the cut-off algorithm is super sensitive or wrongly calibrated?

Originally Posted by fkadir

Went for an initial run about 2 hours ago and got the same symptoms as you. The Motor will stop accelerating and cut out at about 1/2 throttle if i jab the throttle fast, I need to slowly accelerate for it not to cut off power. This is with using the flightpower 25C 5000mah battery so I dunt think quoality of battery packs should come into play.

seems like the cut-off algorithm is super sensitive or wrongly calibrated?

Yup, we had the same problem. Maybe MGM had a bad batch, even though we actually have different models.

I assume you were on cut off mode? Did you try reduce RPM?