Jump to content

Georgia1911

Member
 View Profile  See their activity

  • Posts

    89

  • Joined

  • Last visited

Profile Information

  • Location
    Cobb County, GA
  • Gender
    Male
  • Drives
    2015 Silverado LT

Georgia1911's Achievements

Enthusiast

Enthusiast (3/11)

43

Reputation

  1. Georgia1911
    This is the unit they used on my 2015 Silverado with about 40,000 miles Monday (I paid a $200 deductible- GM covered the rest). I looked at a 2018 Yukon XL owned by a friend and did not see the additional bracket below the reflective material, though there is a weld in that location. It seems they chased a solution for some time. I searched and found several part numbers that have bee superseded and there are different part numbers for Yukon/Tahoe versus the trucks. I wonder if perhaps there are mounting differences because of slightly different sheet metal?
  2. Georgia1911
    Even more so batteries, as they will not be overcharged.
  3. Georgia1911
    It shouldn't change the Ackerman as far as I can see, but I can see it changing the dynamics somewhat. A change in tire width would move the contact patch relative to the centerline of the truck (assuming camber is not 0) and a change in diameter would impact trail (assuming caster is not 0). Not to mention what a change in wheel offset would do. Either of these will change the scrub radius and that might make the Ackerman issue (if there is one) more obvious.
  4. Georgia1911
    First, I would confirm that you have the correct parts installed, at least the uprights (spindles). I understand that Fabtech designed the kit to compensate for the lift, but it is possible the geometry is off because of an error in the installation. It would not be hard to confirm if you have Ackerman or not by checking for change in toe as you move from lock to lock. You should move toward toe out as you turn in each direction. If you cannot get an alignment shop to check this, you can always use the tried and true string alignment method. It may sound crude, but it was good enough for Carrol Smith and I have used it on race cars (mainly Formula Fords) many times.
  5. Georgia1911
    Among other things, if the length or angle of the steering arm (knuckle) is changed, you will change the Ackerman effect, and it need not cause binding, though it might. This is true in either plane. That is, raising or lowering the arm versus the rack, or changing its angle versus the centerline, could both impact the geometry. The other thing that could be impacted by these modifications is bump steer (aka roll steer), but that is not really in play at low speed.
  6. Georgia1911
    Yes, this is a reasonable assumption, but if the wrong parts are installed, or the right ones installed incorrectly, Fabtech's design intent goes out the window.
  7. Georgia1911
    Have you checked to confirm you have the correct spindles and tie rods installed? Ackerman is determined entirely by geometry, so if the tie rod and steering arm angles have not been compensated correctly for the lift there will be some deviation from the desired steering angle. Static alignment may be set the same, but as soon as the suspension moves you could see a difference.
×
×
  • Create New...