[200q20v] Re: [s-cars] Strengthening the car front between
struts A200 20V, S4 ?
b.m.benz at prodigy.net
Sun Aug 26 07:25:03 EDT 2001
Derek, Further comment below.
> From: "Derek Pulvino" <dbpulvino at hotmail.com>
> Date: Sun, 26 Aug 2001 02:17:28 -0700
> To: panneton at xilinx.com, jimmy at urs4.com, 200q20v at audifans.com
> Cc: s-car-list at yahoogroups.com
> Subject: [200q20v] Re: [s-cars] Strengthening the car front between struts
> A200 20V, S4 ?
> You must be in cohootz (speeling?) with Bernie Benz. If you check Chris
> Miller's web site on the 200 and look for a thread concerning the "Bernie
> Benz Strut Tie-Bar," that is exactly what you'll find.
> Some time ago, exact date unknown, Mr. Benz designed and fabricated a strut
> tie bar for the t44 that included a mounting device that tied the tops of
> the struts together from both sides of the car. His theory was the same,
> and he also is/was of the opinion that tying the strut towers only was
> relatively ineffective as it does not make up for the built in compliance,
> read slop, in the rubber bushings integral with the strut mounting plate.
> Theory sounds good, my only question is that as the compliance inherent in a
> rubber mounting bushing could not be considered an unknown, chances are that
> Audi did not neglect that factor in their suspension design. So by
> eliminating the compliance in that bushing you are to some degree
> compromising the suspension design.
The strut top rubber bushings are fully effective as Audi designed in
isolating road vibrations from the chassis. It is only with respect to
strut top transverse cornering forces that the strut brace divides this
force equally between the two bushings and towers for a resultant half of
the normal deflection of bushing and tower.
> That's the voice of logic on one hand, but I can't say I have the voice of
> experience on the other hand. I do however know that there was a recent
> group buy on said strut tie bar, so many people have them, and it would be
> interesting to do a "non-biased survey" on the effect of the Bernie Benz Bar
> Derek Pulvino
>> From: "Russ Panneton" <panneton at xilinx.com>
>> To: jimmy at urs4.com
>> CC: "s-car-list at egroups.com" <s-car-list at yahoogroups.com>
>> Subject: Re: [s-cars] Strengthening the car front between struts A200 20V,
>> S4 ?
>> Date: Sat, 25 Aug 2001 20:33:55 -0600
>> How about putting the brace between the tops of the two front shocks? Have
>> you ever noticed how much the upper strut mount allows the top of the strut
>> to move around? You can't just
>> rigidly mount the top of the strut to the body or you'll probably get too
>> much road noise and harshness. But using a longer strut brace to tie the
>> two shock tops together would
>> maintain the noise isolation while effectively doubling the rigidity of the
>> top mounts.
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