[Just go Play]

I tried the Traxxas CD in my converted 3.3 revo. Diff lock almost stopped the front wheels from constant spinning (faster then the rears) but at that point there was no real advantage to to using it anymore. I believe that aside from the minimal number of spider gears used that the long travel suspension on the revo helps work against the CD.

If your just trying to keep your front end on the ground I've found all of the following to be more effective and less annoying then the traxxas center diff.

1) extended rear A-arms (these make a huge difference)
2) move your batterie/s forward to better balance weight distribution. (this can help steering also)
3) properly adjust your slipper (it's amazing how very small adjustments can effect the slipper)
4) teach you throttle finger some self control.
5) if you like the way 2wd trucks brake in the dirt then get a quickturn front driveshaft. (many people swear by them but I could not get used to it)