BioMax
+1y
I sure like you guys...
On a triangulated link system, the point at which the triangulated bars meet, called the instant center, is what "sets" the roll center (mostly.) The roll center is the point at which the suspension (theoretically) pivots around. The lower the roll center the more weight is transfered to that end of the vehicle. A typical a-arm suspension has a very low roll center (about 1" above the ground on a mini) and a traditional 4-link has a roll center about 15" from the ground. So on a truck that already has a lack of rear end mass and also has a high roll center that doesn't transfer any weight while cornering, will cause it to loose traction in the rear first. By lowering the roll center, using a Satchell link or some other design the rear weight transfer can more than double, making cornering much more balanced.
The use of both triangulated uppers and lowers is totally feaseable, it just gets harder to figure out roll center and roll steer.
BTW- the center pivot of a watts-link is it's roll center and the point at which the panhard bar crosses the center of the rear end is the roll center.
I hope this makes some sence.