Nohachi's suspension ramblings thread

[NoHachi]

Hmz, I've added a further remark to the text to make things more clear:

To summarize:
*To run more then 5kg/mm springs on an AE86 you need ideally to stiffen your chassis through seem welding.
*To run more then 6kg/mm you really need a cage.

You could run with the stock body, but realise that it will be doing a lot of the suspensions work (a compromise). Roll-cages, if designed well and integrated into the chassis, will bump stiffness numbers well into the 30.000+Nm/deg

Newer cars run up to 30.000Nm/deg. This is relatively new thing that's made possible through CAD and FEM software (this is also where the numbers come from and why you won't find many older vehicles in the list). My estimate is that cars from the 80's will be somewhere between the figures I posted. 6000-14000Nm/deg.

These outcomes further confirm my suspicion (and until we've looked at all numbers it is just that: a hunch) that the popular 8/6 rates are truly a race only set-up for use with all out caged race cars.

[edit: Sway bars are a whole different topic that we'll cover some other time. Basically they are just another kind of spring.]