Uh oh............Now I'm in trouble. LOL
I once did a Direct Drive to Diff E Revo. Here's the thread on it. A long read, but you will see the challenges I faced.
http://www.rc-monster.com/forum/show...outrunner+Revo
With Direct Drive using such a large Diff ratio has it's problems. I also tried the 10/43 Buggy gears for the Revo, and they wouldn't hold up. The Torque was too much for the diffs to handle.
The E maxx has the same gear ratio as the Revo.
I can see in the future, a working outrunner project, but this is waiting on Castle HV Line of Mamba Controllers.
A low kv outrunner on HV, would startup great and haul butt with top speed.
Anticipation. LOL