Originally Posted by
LonnyJ1950
My diff is free. it will turn against the drag of the motor. And the diff will do it's job even with a bit of drag. Spinning diffs are overrated. In most cases the only difference between a "free" diff and one with a bit of drag is a slight difference in rear bite, very slight.
Depends on the layout. A superfree diff is indispensible on a track with several 180's.