2005 Legacy GT Camber Curves

[covertrussian]

Measured the camber curve of the stock struts/springs on my 05 LGT, camber bolt was maxed out for max negative camber (not that it matters). Only suspension mod is lower control arm rearward caster bushings (also shouldn't matter unless the wheel is turned).

 

I removed the spring, then used a digital angle gauge, which I reset to 0 when the hub was at the static height (as it would be on the ground). Then I moved the suspension from full droop to full dump and measured the camber about every 10mm.

http://legacygt.com/forums/attachment.php?attachmentid=257460&stc=1&d=1509424462

 

Here is the suspension at full bump (~2.4"), this is physically impossible with a spring in place. 1.60" is about the maximum realistic bump travel.

http://legacygt.com/forums/attachment.php?attachmentid=257461&stc=1&d=1509424462

 

CGain = Camber Gain, what this means is, this is how much camber will be gained over your static camber, add the two together to get the total camber.

Positive Travel = Bump - Upward Travel/Compression of suspension

Negative Travel = Droop - Downward Travel suspension

CGain	Travel in.
1.85	-2.72
1.55	-2.32
1.25	-1.97
1	-1.57
0.85	-1.18
0.5	-0.75
0.3	-0.35
0	0
0	0.39
-0.3	0.79
-0.4	1.22
-0.65	1.57
-0.85	2.01
-1.1	2.4

 

Here is that data graphed out

http://legacygt.com/forums/attachment.php?attachmentid=257464&stc=1&d=1509425946

 

 

Making sense of the data

We really only care about the positive travel (suspension compressing in a turn), since this is representative of the outside wheel in a corner. With stock suspension, the camber curve is fairly lazy (optimally you want .5-1* camber gain per 1" compression), but even then it didn't turn into positive camber like a lot of McPherson suspensions tend to.