Damper Selection with known damping coefficient

[Mateospeed]

Folks,
Here's a rather technical question for you. I'm working out the suspension for my Pro Touring Mustang, and am at the point where I need to pick dampers. I need a little help determining what kind of damping coefficients I should be looking for, particularly in roll. I just can't seem to get my calculations to work. So, help!!

My pertinent information is as follows:
-Vehicle Weight: 3000lb, 55% front weight dist.
-sprung weight front: 750 lb (each wheel)
-sprung weight rear: 575 lb (each wheel)

-un-Sprung weight front: 150 lb (each wheel)
-un-Sprung Weight rear: 100lb (each wheel)
-Motion ratio: 0.85 (front)
-wheel rate: 120 cycles/min (front+rear)
-coil lean angle: 80*


This yields front rear wheel rates of 308 and 250 lb/in, respectively, and coil rates of 400 and 250 lb/in, respectively.

I'm getting the following for damping in one-wheel bump:
-low-speed compression: 32 front, 25 rear lbf/ (in/sec)
-high-speed compression: 16 front, 12 rear lbf/ (in/sec)
-low-speed rebound: 73 front, 56 rear lbf/ (in/sec)
-high-speed rebound: 37 front, 28 rear lbf/ (in/sec)

aaaaaand that's where I stop. Help! Are these reasonable? What should I expect in roll and/or pitch?



I got a theoretical dyno graph from my friendly Viking rep( attached), from which I get the following ranges of available damping coefficients:
-low-speed compression: 35-250 lbf/ (in/sec)
-high-speed compression: 3-8 lbf/ (in/sec)
-low-speed rebound: 8-300 lbf/ (in/sec)
-high-speed rebound: 7.2-15 lbf/ (in/sec)

I seem to already be outside the range, without considering roll. Uh-oh!

Thanks in advance!

-Matt McBride
-'66 Mustang Track Car, EVERYTHING custom-fabricated by yours truly.