QUOTE(woobn8r @ Jun 19 2007, 07:51 PM)
Also threaded coil overs make it easy to set ride height and adjust corner balance.
Doesn't seem any easier to me than tweaking the torsion bar's adjusters. (And I have "coil overs"--actually adjustable spring perches!--on my "other car", so I should know!)
QUOTE
I also do not have a chart (or formula) for rating the spring rate of torsion bars which makes tuning difficult....Moving to the coil over set up is easy....
A quick Google search will give you the formula. There are terms for the
fourth power of the diameter, and (1/lever arm of the suspension). That will actually get you "wheel rate" and not "spring rate", so you would have to do a little more conversion to get "spring rate", but wheel rate is what we should be interested in anyway.
And easy? Well, for certain definitions of "easy", I suppose...
QUOTE
I don't know why you would switch the Macpherson strut set up for upper control arms...that does sound like work.....
For the massively superior control of the camber curve, perhaps?
...In the tail-dragger world, at least, the consensus seems to be that the only positive reason to switch to coil springs is if you need such a high spring rate that the appropriate torsion bar won't physically fit into the A-arm.
...Sure has some good "coolness" factor, though!
--DD