Ridetech OUT, 4 link Watts-link in.

[David Pozzi]

I'm guessing their changes were for better roll center movement but I really don't know for sure. I don't have access to dimensions or a car near me. I did drive the old version at an autocross a few years ago at Del Mar Goodguys event and I did very well with it and I liked how it handled. I was able to hop in and turn a great time with no difficulty. I did not drive it on the street.

I think with the original shorter upper links, the geometry "sweet spot" was going to be at one ride height only and if you run a different ride height it will not be so good. The original was designed as an easy bolt in or optional weld in, with minimal to no cutting. That has it's limitations on what can be achieved.



I'd like to see what you come up with in a four link. A Watts link can be easily adjusted to move the rear roll center so that's a nice benefit.

[Tweak]

I'm guessing their changes were for better roll center movement but I really don't know for sure. I don't have access to dimensions or a car near me. I did drive the old version at an autocross a few years ago at Del Mar Goodguys event and I did very well with it and I liked how it handled. I was able to hop in and turn a great time with no difficulty. I did not drive it on the street.

I think with the original shorter upper links, the geometry "sweet spot" was going to be at one ride height only and if you run a different ride height it will not be so good. The original was designed as an easy bolt in or optional weld in, with minimal to no cutting. That has it's limitations on what can be achieved.

I'd like to see what you come up with in a four link. A Watts link can be easily adjusted to move the rear roll center so that's a nice benefit.

1st image shows where I am so far.
Diff is at my ride height, front lower arm is ride height and OEM location front, rear pickup of bottom arm is middle hole on ridetech weld on bracket
The top arm front pickup point is where i get the most gains and losses, this position is Inside the frame rail and doesn't require cutting into floor. Not that im apposed to doing so if required.
I have the diff at 90deg. so its easier to measure change, as its relative once I have set drive angle.

2nd image shows how much the axle moves forward threw 2" of compression and rebound
the wheel base shortens 2.9mm (0.12")

3rd image shows 1deg of pinion angle change at 2" rebound, however I think I can get this to around 0.8deg

4th image shows 0.5deg of pinion angle change at 2" compression, i will give a little back to the rebound with fine adjustment.

5th image interested me, you can see the angle change of the bottom arm axle pickup point has huge angle changes.

6th image shows axle movement forward with centre of axle at ride height and 2" of articulation
Watts link and arms hidden for easy viewing and measuring, but totally impressed with how it keeps the axle located threw all movement, vertically and articulation.


I really look forward to your views David as I'm pretty green when it comes to 4 link design.