Thanks.
I didn't have any problems running the gearing I did. Disclamer* It was rarely ever ran through grass, mostly gravel/dirt road bashing. I ran a fan and extra cap on the MM and the Neu 1515 1y didn't get ever get hot. Even after the hidden fan crapped out.

The smaller spur does limit the size of pinion though. I will be switching to one of the larger mod .08 spurs now. They have them up to 68 and I have s 72t now that uses the revo slipper setup.
Depending on which tranny you have (E-Maxx, Gorilla Max G1, or the Gee1 Version
http://www.rc-monster.com/forum/show...t=revo+slipper tranny) there are a couple different ways to use the revo slipper with the emaxx. Here's one of them.
http://www.rc-monster.com/forum/showthread.php?t=6232
This is another way to use the whole shaft.
http://monster.traxxas.com/showthrea...t=revo+slipper
There should be a couple other option out there people have come up with.
Using the revo slipper is an upgrade worth doing.