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The Physics behind all this. (archive)

[ Follow Ups ] [ E36 M3 Message Board ] [ Msg. Board FAQ ]

Posted by Dan Wang on October 08, 2000 at 15:21:35:

In Reply to: Yes and no! posted by Bob ///M3 on October 08, 2000 at 01:24:39:

I have a 95 M3.

'95 Stock sways are 22.5mm/19mm
'96-'99 Stock sways are 23mm/20mm
Eibach are 26mm/24mm
UUC are 25.7mm/23.7mm

Formula to figure out increase in stiffness

%-age increase in anti-swaybar stiffness=
4th power
[new diameter]
|------------|
[old diameter]

Example on my 95 M3 with Eibach sways=
4th power
26mm
------ =1.7830491
22.5mm

This example shows an increase in stiffness of 78.30%

Now apply this formula to my 95 M3 if I had UUC's swaybars on my car
4th power
25.7mm
------ =1.7021679
22.5mm


This example shows an increase in stiffness of 70.21%

==============================================

Example on a '96-'99 M3 with Eibach sways=
4th power
26mm
----- =1.6329844
23mm

This example shows an increase in stiffness of 63.29%

Now apply this formula to a '96-'99 M3 if we had UUC's swaybars on the car
4th power
25.7mm
------ =1.558910
23mm

This example shows an increase in stiffness of 55.89%


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