rear ride height adjustment

[Rick Cabell]

I hate to ask a question that has been answered 100 times, but I used the search option and found no answer.
There is a clear formula about how much ride height change there is for every degree you move the spring plate. I am talking about the protractor on the spring plate method.
For example: move the spring plate 2 degrees, and it changes the ride height 1.5 inchs. That was just a example. Does anyone have the right answer. I have seen this published somewhere, but when you need it, you can't find it.
This is on a early car with non adjustable (eccentric bolt) spring plates.

[Wil Ferch]

look here -->

http://tech.rennlist.com/911/pdf/settings.pdf

its embedded in Thom fitzpatrick's ( widebody911) angle calculator
( http://rennlight.com/cgi-bin/spring.cgi )


- Wil

EDIT:
At static ride height ...1 degree change is 7-9 mm height change. however, this works only at the nominal angle when vehicle is statically at rest. Compare to a clock...the change from 2 to 4 o'clock is the same "angle" change as 5 to 7 o'clock...but 5 to 7 won't result in a ride height change.... 2 to 4 will.

[911mot]

3. Now comes the fun part - setting the ride HEIGHT.

The Porsche Tech Spec book lists the trailing arm angle as 36deg30'-37deg with each 1 deg change in angle resulting in 8-9mm change in vehicle HEIGHT.




from http://www.pelicanparts.com/techarticles/911_torsion_bars/911_torsion_bars.htm

[Rick Cabell]

Pelican hits a home run again!!