The 8s is only rated for 81 amps. The 8012 should handle that. Some one else had problems with the mgm. It was close to your problem. Maybe different though. Just wish I could remember who. It was around this forum somewhere. Pm mike there big air see what he says about this. Good luck with problem. I hope you get it fixed.

What about the 9920?

Coolhandcountry - A Feigao 8L is rated near 80amps. In my buggy on 4s Lipo, my 9918 would get pretty hot. Ratings don't really mean much, as motors can easily pull more or less current than they are rated for.

The 9920 would be able to handle the 8s with ease. But you won't get any of the programming features that the MGM controller has.

Features? Like what, I can't even really figure out if I'm doing the basic features down pat> :)

The MGM is customizable in terms of brake strength, motor timing, acceleration strength, LVC, etc. The 9920 can only have its motor timing changed via a computer cable, and that's it!

Bigair, have you tried a few different programming parameters(like cells, cutout mode, etc.)?. I think it is cutting out due to voltage drop or amp draw. What cells are you using? Do you remember what settings you have programmed?

Also, if you need help with the programming, we can work this out. It is pretty easy once you do it once or twice with success. The first try, it is a giant PITA, though.

GP3300 new cells. Match from SMC. Yeah, I'll get with you guys to figure the programming. I'm going to reprogram tomorrow night when I get off and tell you the beeps.

Do they make a program cable I can buy that would make this easier? If so, how much?

The controllers are not yet programmable via computer link, but when this is possible, the newer controller can be upgraded. LMK if you need live assistance with the programming. sometimes it is just easier to talk you through it rather than walk you through it via messages.

I really didn't like the idea of the 8s being sucking lots of amps, but now that Mike is here, things will be much easier for you. We hope.

With the 20120 (not the warrior, but the other 20120, there are two types of 20120's right now..) you can get the programming cable. Mike, That warrior, doesn't it work on the program cable? I thought it did?

I haven't posted in a while so I just read this .I run the 9918 with a lehner 5300. This setup pushed my bandit to well over 60 mph on 8 GP cells.

With M2k's and normal gearing you would be well over 40 mph on 7 cells with the 5300. My lehner 4200 pushed even my pede over 40 mph on 7 cells and normal gearing(18/87 or so) , with massive torque also.

I know this is late advice ,sorry. I hope you figure out your programming. Good luck.

Hey nut. It is better late than never.
Keep me straight captian. I know it is a hard job.
Hope mike helps you get it straight big air.

Huh, what did you say?!