Stability simplicity.... the drawing to the
right is an illustration  why a FTC
system can be narrow.  This only
describes our failsafe mode. In Fig 1
the double pointed arrow represents
the controlling force applied by the
driver to the vehicle tilt, the rollers
under the plank represent the freedom
of castoring wheels [as depicted in Fig
1a] to be able to react [steer] any
lateral load on the tilt mass or  
rotational load around the tilt axis
[inertial forces].
When the mass is forced to tilt   the
mass  naturally wants to rotate [in tilt]
about its c of g.
Normally in a tilting vehicle it cant do
this except on a motorcycle where the
rider applies countersteer manually to
the front wheel. However in FTC the
front wheel/s automatically
countersteer upon a simple steer input
to tilt the vehicle
Also, imagine an overturning force
being applied to the vehicle ...from
outside the system  [remember the tilt
is  restrained via the" steering input"]...
so instead of the force tipping the
narrow vehicle it steers the castoring
wheels in the direction of the applied
load.... so relieving the overturning
moment. This is automatic "opposite
lock" which is what a car driver has to
do manually in a slide.
All  done automatically ,simply by
using FTC......BUT REMEMBER...  this
is only our failsafe mode of operation
Complex Function
Simple implementation
A new Generation... a new Explanation....
Tilting Vehicle technical page