Thread: Dynamic Stability

The comparison is not valid for an RRS with Dynamic Response. Very different systems. When the DR is inoperative, it has no effect on articulation. When the cross-valve EAS is operational (in low range & some high range situations), it is the limiting factor for articulation.

Cheers,

Gordon

Sorry,mine is for the D2 ACE system.
All the gizmo I purchased does is basically alter the speed signals to the D2 SLABS ecu.
Will PM you a link to the supplier and the thread.Perhaps a similar device can be made for later vehicles with a similar system.
Andrew

Originally Posted by gghaggis

The comparison is not valid for an RRS with Dynamic Response. Very different systems. When the DR is inoperative, it has no effect on articulation. When the cross-valve EAS is operational (in low range & some high range situations), it is the limiting factor for articulation.

Cheers,

Gordon

Thanks Gordon - so the "live axle" and "independent systems" are very different. On a "live axle" system you can gain extra articulation by disconnecting the swaybar. On an independent system (whether they have Dynamic response or not), the EAS is what links the articulation and is the limiting factor. disconnecting the swaybar will produce zero improvement.

On a D2 with ACE disconnecting the bar will make no difference to articulation.

On a RRS, the vehicle will give you all it can as part of its programming.

On the D2, the ACE unlink module only releases the hydraulic resistance - the bar stays attached.

The ability to unlock D2 ACE bars at higher speeds is achievable because the D2 uses a speed signal on a dedicated wire hence the speed signal to the ACE ecu can be modified. The D3 etc speed signal is distributed on the high speed canbus so in a practical sense cannot be modified.

BTW, the D2's ACE bar locking and unlocking has nothing to do with high or low range other than its difficult in high range to travel slowly enough to unlock the bars.

Originally Posted by Tombie

On the D2, the ACE unlink module only releases the hydraulic resistance - the bar stays attached.

^^^^ This....

Stop talking about 'disconnecting', it's just confusing the issue.

M

I quote from a different forum..


I quote..

Taken from [ame="http://en.wikipedia.org/wiki/Range_Rover_Sport"]Range Rover Sport - Wikipedia, the free encyclopedia[/ame], and referring to the 2006-2013 Range Rover Sport:

Driving technologies[edit]
Dynamic Response incorporates active electro-hydraulic anti-sway bars which react to cornering forces and activate and deactivate accordingly resulting in sublime on-road handling.[citation needed] Dynamic Response also aids off-road performance by decoupling the anti-sway bars to allow maximum wheel articulation. The system in an evolution of the acclaimed ACE (Active Cornering Enhancement) system available on the Discovery Series II but is described as proactive rather than reactive. Positive Torque, a system standard on all TDV8 and Supercharged models, electronically blips the throttle, resulting in faster downshifts and the availability of vast reserves of torque. The speed sensitive steering system, adopted from Jaguar is standard on all models and there’s the option of active bi-xenon headlamps which act with the angle of the steering to aid vision. Active Cruise Control (ACC) with Forward Alert system incorporates an integrated front bumper radar which detects vehicles travelling ahead and adapts the vehicle’s speed to match. The system scans the road ten times a second, has a 16 degree field of view and Land Rover claims it is able to discriminate between a heavy vehicle and an adjacent lane motorcycle travelling at least 180 metres (590 ft) ahead.[5] Four preset distances are selectable and will ensure the Sport maintains the desired distance from the vehicle it is following.


So the swaybar disconnect will allow better articulation when offroad. I find it unusual that it would lock at speeds below.... because that is when you need the disconnect most. In my humble opinion, it disconnects when offroading, and therefore the term 'inoperative' suggest that the electro hydraulic system does not try control body roll when offroad at low speeds, so the swaybars remain effectively disconnected allowing better articulation.

Regarding disco 3 & 4, I was not aware that the disco's had active swaybars, I thought that was only available on the RRS.. Someone correct me please..

Originally Posted by RainHard

Regarding disco 3 & 4, I was not aware that the disco's had active swaybars, I thought that was only available on the RRS..

No need for a correction - you are correct.