Re: [Amc-list] Strut rod eliminators

[Tom Jennings <tomj@xxxxxxx>]

Armand Eshleman wrote:

 > Wouldn't
> the rubber in the upper arm and lower arm mounts to the chassis still take
> up a lot of the road shock? 

There's not a lot of rubber in those places! Some minor misalignment and 
  high-frequency vibration isolation.


 > It isn't the strut rod bushings that take all of
> this shock. I think this guy has it correct. Less bump steer equals less
> driving fatigue.

The strut bush takes curb-whack or pothole energy that would break 
things. I think that the strut "gettin shorter" when the bush compresses 
causes toe change -- toe IN -- the steering linkage stays the same 
width, but as the lower arm arcs backwards the distance from the 
balljoint to the frame *shortens* a tiny bit. I bet AMC thought of this 
too; the steering linkage (tie rod ends etc) and the lower arm remain 
nearly perfectly parallel, causing little toe change.

Bump steer, I think, is the name only for the geometry change caused by 
the steering linkage not being parallel to, and in the same plane with, 
the A-arms (real and virtual). Maybe it applies to the forces in other 
directions.


But for us non-racers, the main thing the strut bushing does, besides 
pivot, is keep us from crackin things when we whack a curb or pothole.

Do we have and road race chassis people here? I'm sure no expert.
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