Thanks man!

I have SPC on my car now and I am curious to see your findings.

 

This may help but it's not cheap.. . I use one at work and they work well.
http://www.lowes.com/pd_91123-353-DL...ser&facetInfo=

 

If you can take a picture of them side-by-side with the taper pointing straight up and then take another side-by-side of them with the joints fully articulated to one side or the other, I can use a CAD program to look at the angles and estimate the rotation centers.

Something like the following graphic. If you can keep the joints in the same place, relative to the camera, the comparison will come out much better. Also, the joints need to be the same distance away from the camera for decent results. The comparison I can generate will look much better than my MS paint image. I will scale the image based on the dimensions you previously provided.

 

Here is the video that shows the difference best:

My link (sorry for the low audio for part -- use full screen to see everything best.)

[media]http://www.youtube.com/watch?v=nQwx0STphRc[/media]

Here are some photos:

 

Can you replicate this image with both of the joints fully articulated?

 

I can, but not today unfortunately.

 

Those are legal.

 

I agree with matt... those are legal. Having installed them myself i had a feeling that the articulating shaft was the same size.



These are most likely the relavent dimensions (unless they've moved the articulating point relative to the top mount point).

EDIT: Actually... looking at the first picture, now I'm not so sure...

 

Hell, maybe I can snap a quick shot on the way to work for you all in the articulated position. Otherwise it would be Monday night... I'll try and post the picture of the articulated view later today. This is great if legal. Now no worry.

 

If thats the case, then the same could be said for lower roll center adjusters. Right? A spaced out balljoint with the same articulation as stock is considered a roll center adjuster. Perhaps I'm missing something here.