Improving suspension on 2010 Expedition
I'm looking to reduce the effect of side winds and passing semis when I tow my 26' TT with my 2010 Ford Expedition EL. I am using a Equalizer WDH, but don't have the auto-leveling feature in my Exped...
Forum Discussion
Finally some miles underneath the IRS system and have been watching/waiting for this type of topic/response
The OP has a 3rd gen Expedition. FYI, 1st gen had a live axle with multi control links...2nd gen had IRS with control links...3rd gen has IRS and a 5th control link added
Always wonder hos the precision bushings would last and if the Ford Engineers sized them for towing heavy, or just for 'car' like usage. Time would tell...
Also knew the Ford Engineers addressed the towing heavy forces on the main control arm by angling that main control arm. Not the typical square to the direction of travel like cars do for their IRS
Again, that still has heavy towing forces on those precision bushings...even with that angled main control arm...time will tell how they last towing heavy (add hauling heavy too)
The need for precision bushings vs 1st gen live axle is because on all IRS vs live axle...has the tires ability to in different directions (even small angles) on a worn bushing IRS vs rigid live axle that CAN NOT go in different directions (angle is set by welded metal)
So is the looseness the OP mentions from worn bushings?
ON the rear Anti-Lean bar (better name than anti-sway on a towing form where it gets mixed up with the WD Hitch system anti-sway bar)...hope you folks understand how they work and how torsional rigidity of the platform in reference to handling at the extreme behaves
Hope you folks understood to change out the front anti-lean bar to match the OEM engineers who dialed in under-steer.
If didn't change out the front anti-lean bar to match...you might created a higher rigidity on the rear axle...whereby it will load up the outside radius tire more than before
That then creates a snap transition to over-steering and with a trailer in tow...a higher jack knife potential
The OP has a 3rd gen Expedition. FYI, 1st gen had a live axle with multi control links...2nd gen had IRS with control links...3rd gen has IRS and a 5th control link added
Always wonder hos the precision bushings would last and if the Ford Engineers sized them for towing heavy, or just for 'car' like usage. Time would tell...
Also knew the Ford Engineers addressed the towing heavy forces on the main control arm by angling that main control arm. Not the typical square to the direction of travel like cars do for their IRS
Again, that still has heavy towing forces on those precision bushings...even with that angled main control arm...time will tell how they last towing heavy (add hauling heavy too)
The need for precision bushings vs 1st gen live axle is because on all IRS vs live axle...has the tires ability to in different directions (even small angles) on a worn bushing IRS vs rigid live axle that CAN NOT go in different directions (angle is set by welded metal)
So is the looseness the OP mentions from worn bushings?
ON the rear Anti-Lean bar (better name than anti-sway on a towing form where it gets mixed up with the WD Hitch system anti-sway bar)...hope you folks understand how they work and how torsional rigidity of the platform in reference to handling at the extreme behaves
Hope you folks understood to change out the front anti-lean bar to match the OEM engineers who dialed in under-steer.
If didn't change out the front anti-lean bar to match...you might created a higher rigidity on the rear axle...whereby it will load up the outside radius tire more than before
That then creates a snap transition to over-steering and with a trailer in tow...a higher jack knife potential
