quattro Digest, Vol 82, Issue 41

[Huw Powell]

Looks like more than that to me - the drawing seems to show a perforated 
bellows inside the strut.  Which, of course, simply acts to add a bunch 
of extra damping/motion limiting at the limits of travel.  Perhaps.

On 8/21/2010 9:18 PM, thejimrose wrote:
> the bumpstop adds spring rate at the end of the springs travel. nothing
> right or wrong with it, just another tool at the engineers disposal to
> tailor ride / nvh / performance / etc.
>
> back in the day it was just an 'oh shit' button to keep metal form whacking
> into each other. like everything else in an audi suspension, it's all grown
> up and evolved into a somewhat more intelligent 'active' doodad.
>
> still just a fancy polymer knob, mind.
>
> http://performance-suspension.eibach.com/cms/motorsport_motorsport_products_emc_eibach_micro_cellular___secondary_springs__bump_stops_
>
> Hah... Two things... Is it just me or does this "stop absorber" sound
>> mysteriously like a bump stop?  And secondly, how is using a bumpstop to do
>> the shocks job a good idea?  They should firm up the shocks and focus
>> harder
>> on the valving to keep it off the bumpstop in the first place, not make a
>> bumpstop taht acts like a shock.  That sounds lazy in my opinion.  Then
>> again, I think macpherson struts are a lazy/cop out design anyway.
>>
>>
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-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/