volkdent (or any one else of course

)with all of this homework you've been doing i was wondering if you've run across the difference between the upper and lower ball joints?
On a lot of double wishbone suspensions the lower arm takes the load, and the upper simplily supports the spindle through the motions. But, does this mean that the lower ball joints are made differently. Other than the fact that the mounting of the lower and upper ball joint differs, if they could be interchanged, would it work?
Can one upper balljoint work for anothers lower?
thanks
Rip