I've always wondered about one aspect of this system.
The "active toe" bushing at the front of the trailing arm of a dsm is designed to give a little and allow the arm to pivot around the bolt in the trailing arm as the suspension is loaded laterally
... (it's actually passive toe, if one wanted to be pedantic /ubbthreads/images/graemlins/smile.gif )
If I understand the system correctly, the rear of the trailing arms will deflect in the direction of the applied force, proprtional to the force applied
... not speed sensitive, lateral load sensitive only ...
... more lateral load = more toe change
On the vr4, same that bushing is present, (hell it's pretty much the same damn arm)
On paper, it's simple , the 4ws system on the vr4 "works" by forcing the front of the arms around the pivotbolt in the arm housing.
... speed sensitive, (pump driven off the rear pumpkin/spool valve that references the front rack >no electronics of any kind)) and only effectively "active" at speeds above ~30mph (ish)
It makes me wonder if the arms of the vr4 are restrained from moving much (if at all) in response to lateral loads in the toe plane by the attatchment of the rear rack? when the system is not active.
... wouldn;t the rack stabilise the front of the arm, at least somewhat?
put plainly, would leaving the rack in situ, but isolating it hydraulically (no pump/lines) give a rear suspension that is "effectively" locked out of passive steer?
A poor mans passive steer delete, without all the compromises/ noise / vibration / harshness of a welded front bushing.
dunno, just something I always wondered about /ubbthreads/images/graemlins/smile.gif