c# - 2 Wheeled Vehicles (Physics in Unity3D) -

i'm trying create 2 wheeled vehicle in unity3d, wheels side side (think wheelchair or braitenberg vehicle). intention if drive 1 wheel, not other, vehicle should turn. should able turn 1 wheel forwards , other backwards , vehicle should spin.

however, vehicle moves forwards (maybe slight bias in direction want turn.. slight). have feeling should change drag/friction settings, have played these little effect. can point me in direction of should doing working right.

for info using physics wheel colider built unity 3d. need physics kinematic system not suitable.

thanks

ok, i'll add answer here (although own question) have seen couple of posts asking similar things. if creating vehicle 2 dominent wheels (like little robot or britenberg vehicle) should still add small wheels front or stability (think of them casters). on these caster wheels, turn stiffness factor forwards , sideways friction down 0. on main drive wheels, turn sideways friction stiffness factor down 0.5

this allows vehicle skid steer.