Originally Posted by
robk
As far as a center diff, i'm not sure if its legal. Slipper clutches were outlawed early on for sure, and I'm not sure if a 3rd diff is allowed.
I can't find any IFMAR or ROAR rule outlawing slippers or center diffs. The only drivetrain things I found were that ROAR requires 4WD, IFMAR say 4WD or 2WD (front or rear, both are ok), and IFMAR says you cannot run a one-way bearing in the rear for front wheel braking only, the rear must be able to have braking effect from the ESC it says. That last one is interesting, I guess a FWD car is an exception for that, unless you were to run a one-way in the rear but installed it backwards.