This is the Rear Bump numbers
So ...Now we need to make an adjustment...... well on the front you would move the tie rod end at the spindle or upright..... or you would move the Steering rack up or down or in or out......
Not many people know about changing the bump steer in the rear of the car..... the way you change it is to rotate the upright on the axil.....
And it doesn't take much..... all you are trying to do is make the two different Arc of the upper control arm and the lower control arm work together and not try and steer the car...... that's what the front wheels do.....
So as the notes show.... we turned the forward heim in the upper control arm IN.... one turn.....there by causeing the upright to move towards the front of the car......
Then we put everything back together and then start all over again with setting up the Bump Steer Gauge and Plate and everything......
Then we go thru the motions of measureing the Bump as we did before....1', 2" and 2.5" in Bump and 1"and 2" in Droop....againg
And write down the numbers so we can compare......
Now you see why we spend so much time making sure our bases are stable and strong .... that will equal Consistency
And now is time for Repeatability.....
And you can see the numbers changed....
