[lincpimp]

The switch setuo works when you run a single esc with 2 brushed motors. It installs between the pos and neg wire that run to the rear motor and either disconects them to allow freewheel or disconnects them from the esc and shorts them out to provide some drag brake of sorts.

If you run 2 escs you can use a stick radio and have selectable mixes to control what the escs do individually. So you could actually run the rear motor in reverse and use 4ws to spin in place.... BUt I think you plan to make a 2.2 rig, not a super so you will not have 4ws...