Quote: The pinion will move from it's preset angle and it's relationship to the driveshaft.
Can you please explain as you understand it. mike
Not Mike, but will answer for him, there is no "as we understand it", it is what it is. The pinion does NOT maintain the same plane, through the arc of differential travel. Don't know any other way to explain it. The differential, does not stay stationary in one spot and simply move up and down. It SWINGS in an ARC. If it does this, the pinion can not possibly stay on the same plane. A 4-link is, to way over simplify here, nothing more than a long ladder bar. Properly set up, if you extended the upper and lower bars, they would eventually intersect. This is the "Instant Center" of a 4-link. The rear swings in an arc, from this instant center. Now where a ladder bar and 4-link differ, is that a ladder bar has a constant instant center, that being the front mounting point and a 4 link has a large amount of instant center combinations, depending on where you position the bars. Also, with the position of the brackets on the housing and the fact that the top and bottom bars are generally not the exact same length, the instant center of a 4-link is also constantly changing as the rear swings. I don't know of any other more clear way to try to explain it.
Monte
I think I will get a gopro camera and take some video. and see how much movement we actually get.
I think I will get a gopro camera and take some video. and see how much movement we actually get.
