LR 4 bar location

[Kromulous]

Care to explain drive angle more? between the 2 bars.

Also would anti-squat be purely calculated from the lower bar only?

[Mr.Kennedy777]

Care to explain drive angle more? between the 2 bars.Also would anti-squat be purely calculated from the lower bar only?

Drive angle is also known as thrust angle or the slope created by the instant center pointing towards the axle center line. The instant center lines for the most part, project backwards from the chassis into the link and extend beyond, and where the top slope and bottom slope intersect, where these lines intersect above or underneath (or level with) the axle center line, creates the slope for the thrust angle which is pointing towards the direction of thrust always, hence the term thrust angle. If the slope points uphill from the axle center line into the chassis this creates thrust that pushes up on the chassis, if it’s level it means there is a straight forward push done due to the combined work of the links. This thrust angle would be the bottom slope of your anti squat instant center map. It is different on each side, as each side will either squat or not, what happens on one side does have an effect on the other, and the combined configuration does have an effect on the overall net component and I think this starts to use the same force based application point physics as the front end suspension uses with force based moment center, but dealing with longitudinal force transfer.

[sidewinder69]

So trying to simplify, I would notice less initial roll steer and more forward traction ?

[Mr.Kennedy777]

So trying to simplify, I would notice less initial roll steer and more forward traction ?

Very subtle change yes. But with less indexing into the spring than before you move the bar, also, a subtle change in dynamic wheel load.

[Mr.Kennedy777]

This would be a really good change to make if you were really close to ideal and needed just a hair of an adjustment to correct the handling a bit.