bump steer height

[myjones]

Tell us your final set-up for bump steer including your ride height
examples
ground clearance at firewall 4.5 height of spacer used .75"

ground clearance at firewall 5" height of spacer 1.250


Just looking for a good starting point and the sweet spot for the typical ride heights used on the (33)
I allowed the multi choice option so if you fall between two just pick both sides.
If you fall outside of the choices on either category just post it up in the thread instead.
For now I want to limit votes to the 33 so the results don't get skewed by the other FF models results
Thanks
DB

[myjones]

tell us your final set-up for bump steer including your ride height
examples
ground clearance at firewall 4.5 height of spacer used .75"
ground clearance at firewall 5" height of spacer 1.250
db

bump
steer


ttt

[Tom Veale]

Hi Dale, I'll get some measurements and post. However, my steering arms are welded to the spindles on my very early kit. I would need a relational measurement of your steering arm to the spindle to make any sense of this. I'll try to come up with a reference point on my spindle for the height of the steering arm and then the height of my bump steer spacing.

Maybe we should also have a measurement from the ground to the bottom of the steering arm. This would help with different tire/wheel combinations.

Best regards, Tom

[myjones]

Hi Dale, I'll get some measurements and post. However, my steering arms are welded to the spindles on my very early kit. I would need a relational measurement of your steering arm to the spindle to make any sense of this. I'll try to come up with a reference point on my spindle for the height of the steering arm and then the height of my bump steer spacing.

Maybe we should also have a measurement from the ground to the bottom of the steering arm. This would help with different tire/wheel combinations.
Best regards, Tom

Tom
Good catch on two more variables, they all play a roll in the final height of a bump steer post. I forgot about the early spindles and that their steering link offset may be different
so lets compare those first to confirm. The tire size will have a big set of same size but their are a few of us that aren't afraid to diverge from normal :cool:

This poll was the result of a phone conversations and E-mails about bump steer kits. While there are several types available and quite a few in use no one actually posts what their final
offset is. The vendors like and asked for this kind of feedback because it helps them refine what length bushings to put in their kits. Since mine is far from standard I can't offer any valid
feedback on what the average 33 build needs. So far the dimensions involved are spindle height, rack height and bump steer spacer size. Early spindles aside, it may be easier to
state it in centerline of rack vs centerline of steering link above finished floor. The pertinent data is the angle of the lower control arms at ride height but that is harder for amateurs like me to accurately measure so the height of the two points should give more reliable data to work with. Anything else I forgot to consider?
Dale

[Tom Veale]

Hi Dale,
First let me ask everyone to forgive the 10,000 miles of bugs, dirt and cow dung on my car/suspension! I'm not obsessive/compulsive about cleaning my cars........

1) Here's the height of the spacer above the steering arm:
http://thefactoryfiveforum.com/attachment.php?attachmentid=33204&d=1409864905
It measures 1 3/4" from the top of the arm to the centerline of the spherical joint. Note that my steering arm is an early "welded" variety, not like the bolt-on units now provided.

2) Next, to give an idea of where this puts things in the suspension I laid a piece of 1/8" thick aluminum angle across both parts of the Lower Control Arms (not on the tapered portion) and measured the height of the tie rod spherical joint above the LCR including the spacer:
http://thefactoryfiveforum.com/attachment.php?attachmentid=33202&d=1409864893
This measurement is exactly 3" when the thickness of the Al angle is taken into consideration.

3) My car sits pretty tall and shows 5 1/2" at the firewall above the floor.

4) I measured the center of my front spindle to the ground with full weight on the tire at 12".

5) The height of the top of the steering arm but below the Spacer is 10 3/4" above the floor.

6) Finally, I measured the ground to the centerline of the steering rack to get an idea of that distance:
http://thefactoryfiveforum.com/attachment.php?attachmentid=33203&d=1409864898
This is 12.5" above the floor and the same as the center of the spherical joint at the end of the tie rod is to the floor.

I hope the photos help us to get some consistency in measuring these distances.

Best regards, Tom

[myjones]

Hi Dale,
First let me ask everyone to forgive the 10,000 miles of bugs, dirt and cow dung on my car/suspension! I'm not obsessive/compulsive about cleaning my cars........
1) Here's the height of the spacer above the steering arm:
It measures 1 3/4" from the top of the arm to the centerline of the spherical joint. Note that my steering arm is an early "welded" variety, not like the bolt-on units now provided.
2) Next, to give an idea of where this puts things in the suspension I laid a piece of 1/8" thick aluminum angle across both parts of the Lower Control Arms (not on the tapered portion) and measured the height of the tie rod spherical joint above the LCR including the spacer:
This measurement is exactly 3" when the thickness of the Al angle is taken into consideration.
3) My car sits pretty tall and shows 5 1/2" at the firewall above the floor.
4) I measured the center of my front spindle to the ground with full weight on the tire at 12".
5) Finally, I measured the ground to the centerline of the steering rack to get an idea of that distance:
This is 12.5" above the floor and the same as the center of the spherical joint at the end of the tie rod is to the floor.
I hope the photos help us to get some consistency in measuring these distances.
Best regards, Tom

Tom
What is the height above the floor to the top of the steering link/bottom of that spacer?
Thanks for the pics, mine will be a driver too so it will be wearing it's share of bugs at some point.
Dale

[Tom Veale]

What is the height above the floor to the top of the steering link/bottom of that spacer?

Hi Dale,

It measures 10 3/4" from the floor to the top of the steering arm connection (below the spacer). I put that dimension in my message above now, too.

So the steering arm's top is about 1 1/4 inch below the C/L of the spindle. It's about 1 3/4" below the c/l of the steering rack and spherical tie rod joint.

Hope these help,

Tom