Hmm, good to hear, Mike. Talk to you about that later on.
I have a 9918 which I can send into the thermal abyss without any trace of brake fade, this confirms their theory.

New Update
 

Just throwing another update at this thread.

I've finally decided that, rather than trying to force a different center diff (one from the OFNA Ultra MBX) into the Hyper 7 by drilling even more holes into the chassis, I'd sell the Hyper 7 and actually buy an Ultra MBX. So, the Hyper 7 is sold and my MBX will be here this week.
My pinion/spur ratio will immediately change from 15/46 to 15/51, using the plastic spur gear from OFNA. Also, with the plastic gear I can go as low as 10t for the pinion from Mike.
These changes are for the better all around, since I was able to pick up an RTR MBX with a complete second chassis roller for the same price I sold the Hyper 7 TQ for.
I was able to satisfy my curiosity on if/how to make it work with the Hyper 7 and now I'm getting ready to make the MBX an actual racer so I can get out with the nitros before the end of the season :)
I expect to have another update for this thread this coming weekend, as long as I receive the buggy.

Mike, I saw in here that you said running 14 cells in series on the XL 2000 would hit 30mph correct? Would it be possible, and safe to run an XL 2400 on 12 cells in series with an MGM 80? Im just asking, because ordering a controller for $200 to handle a motor that my controller should be able to do currently is a little iffy. Otherwise I'm happy to purchase a BK 9920 I guess.

Ohh, and for the mbx r2, I found coldfusion was willing and planning to make delrin spurs, so no worries on the metal pinions

I got my MBX pros from my ebay purchase a couple days ago, but it's been too hot and humid to do anything with them yet. I'm hoping to have one up and running with the MGM 12012 and Feigao 8L with 4s lipo by the end of the week.

Sounds sweet, I hope to have an mbx r2 roller with motor mount and 2 delrin spurs in my hands after my vacation in a week. Looking for something to run around the newly built and groomed park.

Remix, The 80 amp mgm should handle the xl2400 on 12 cells with no troubles. 30 mph shouldn't be any trouble, either.

I just want to double check for clarification, since I just remembered you tellling me that it would have troubles with the 10L on 12 cells, what has made you change your mind? Just wondering, as I'd rather spend $200 than have smoking esc on my hands. If it would be easier on the esc. and I could still hit 30 mph on a 2000xl w/ 12 cells, I might try that.

The 10L will draw more current than the lehner basic 2400. It may well handle the 10L, but it would be working hard. The xl2400, however, is pretty easy on controllers.

Thats great news to hear! Do you think running a controller in two cars would be hard on it? If the plugs on the controller wear out I can replace those easily, but the lehner motor plugs look like they are in there for the long run.