[A4] suspension theory thoughts, questions, etc - grooved shocks

[Duncan Thomson]

Yup, higher perch --> higher ride height.

Sounds like Jim's main issue is poorly specced springs. This results in 
spring binding under load. No cure for this but to get springs with 
fewer coils which have larger gaps between coils with weight of car on them.

As Huw hinted, these gaps are a function of spring properties and car 
weight and will not alter with perch height (unless perch is raised 
beyond the point where preload exceeds force on spring from weight of car).

It does start to get complex after this, and I gave up on my explanation 
(s'posed to be working anyway!).

Hope this helps (a little!)
Duncan

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Huw wrote:

>If that is the case, when you "raise" the springs (by moving the lower 
>seat), surely the car must ride higher, and the spring stays the same 
>length - at least when the car's weight is on it?
>  
>