roll centers, rear uprights

[Dominik]

Okay,
let’s "roll”:

I went into overdrive now, borrowing some computer time at the local Universtiy:

the rear 427 upright is 6.73” from center up and 5.62” down (total 12.35”)
the rear lower a-arm is 12.4” long, the upper 11.4”.
Roll center for the rear: a "lousy" 2.2”!
Track rear: 55 1/2”

the front lower is 10.9”
the front upper is about 8,62” – that is an estimate.
I have no value for the front upright, I estimate 11.18”.
It appears to be adjustable, looking at the manual and pictures.

With the estimated values Roll center front:
4.5” at ride height.
3.6” mm at 1” bump
2.8” at 2” bump.
5.43” at 1” droop
6.5” at 2" mm droop.
Ground clearance 4.72”.
Track changes by 1/2” in both directions in bump or droop.
Roll center moves about 10” sideways.
Track front: 54 1/4”

So our 427 roll-centers are not nearly where we want them...

My brain is boiling, I will introduce new feartures in suspension behaviour as "runnning changes” and stick to what I have for now.


Cheers,

Dom, Cape Town