What exactly is roll center and how does it affect a link suspension? I believe it is the line from the bottom of the uppers to the top of the lowers, but that is about all I know.

Suspension roll center is the plane at which the suspension rotates about. Top view take converging points of uppers and lowers. Then in the side view connect the dots...............

Originally posted by Pig Pen
Suspension roll center is the plane at which the suspension rotates about. Top view take converging points of uppers and lowers. Then in the side view connect the dots...............

so does this mean that if you get the roll axis is paralell to the ground you won't get articulation steer as the truck flexes? I'm trying to learn all of this for when I build my rear 4 link...

basically,

Do a search for the Suspension god thread, it was beat to death in it!!

Go here, best explination I have found

http://gallery.uunet.be/heremanss/
go to suspension

Yeah, yeah..it's a RC car site, but everthing is explained much better than I have seen on any BBS.

Originally posted by CrazyHorse


so does this mean that if you get the roll axis is paralell to the ground you won't get articulation steer as the truck flexes? I'm trying to learn all of this for when I build my rear 4 link...

YES.................then your suspension will always articulate perpendicular to the chassis. Read the God Of Sus thread.

Of course thats only at ride height. As the suspension droops and compresses the roll axis changes. But, it is a good indicator of how the suspension works on the street.

Kevo

Originally posted by Patman
basically,

Do a search for the Suspension god thread, it was beat to death in it!!

I've read through that thread several times, and it got hard to pull the tech info out from inbetween all of the "my dick's bigger than your dick" insults being traded...

Originally posted by CrazyHorse


I've read through that thread several times, and it got hard to pull the tech info out from inbetween all of the "my dick's bigger than your dick" insults being traded...

Can't really argue with that!:)

But Dude! IT'S HUGE!!!!!!:flipoff2: