4 Link Calc Questions

[TheGriz]

For those of you who used a 4 link calculator in your 4 link design, how did you determine your center of gravity and unsprung masses of the front and rear?

Was it an educated guess?

 

[wheelNC94GC]

I would say an educated guess is the top of your tranny bell housing for the CoG. If you want to be accurate then do this....http://www.longacreracing.com/articles/art.asp?ARTID=22. Not sure about the unsprung mass...I dont think it has a huge effect on it so I left mine with the numbers it already had in it.

 

[TheGriz]

Thats kind of what I was thinking.... Maybe my COG will be a little further back for me since I'll have a 203/205 back there.
I've been looking for target values to shoot for... but have seen some differing opinions. Most importantly, I'm interested in the Anti-Squat. Any opinions?

I am going to ty to keep my uppers as close to parrallel with the ground as possible.

Anti-Squat XX % - Seen targets somewhere around 100%.
Roll Center Height XX in
Roll Axis Angle XX degrees (Roll Oversteer)

 

[paradisePWoffrd]

your antisquat numbers you want to be below 100% if you can.... somewhere 60-85% is probly pretty good.... and try to get it to change very little through droop if possible....

with your roll axis angle, is going to show kinda how much rear steer youll have in the suspension... as close to zero as possible....

link seperation is going to be your friend if you can design it in...