Re: A modest proposal...

[ekellock@juno.com]

I know exactly of what you describe hear.  When I test drove my current
91 200qw, this judder was the first thing I noticed by doing exactly the
same thing in a parking lot.  I didn't get the tire sqeal due to a coarse
surface, but noticed the judder right away.  My 87 5kcstq did not have
this.

Ed Kellock ................... Greenville, SC  USA
91 200qw ........................ 87 Coupe GT

On Mon, 4 May 1998 16:15:05 -0400 (EDT) audidudi@mindspring.com (Jeffrey
J. Goggin) writes:
>Here's a simple test for those who don't think slip angles alone can 
>affect
>a Torsen center diff's transfer of torque between the front and rear 
>wheels.
>
>        1) Find a parking garage with a polished concrete floor.  Roll 
>your
>windows down.
>
>        2) Find an area inside the garage sufficiently large so you 
>can
>drive your car around in a circle.
>
>        3) Turn the steering wheel to full lock and let out the clutch
>slowly.  Do not give it any throttle.
>
>        4) Feel the car "judder" slightly as it turns and/or listen to 
>the
>squealing noise you hear from the         inside rear tire being 
>dragged
>along the concrete.
>
>        5) Repeat Step Four in an Audi that has an open center diff 
>and
>compare your results.
>
>Because the speed's so low, there's plenty of grip available at the 
>tires
>and chassis dynamics don't enter into the equation.  There's also 
>negligible
>weight shift and/or load transfer to complicate the situation ... try 
>it for
>yourself.
>________________________________________________________________________
>    _                _
>   / |      _| o    | \       _| o  Jeffrey Goggin
>  /__| | | / | | __ |  | | | / | |  audidudi@mindspring.com
> /   | |_| \_| |    |_/  |_| \_| |  
>http://www.mindspring.com/~audidudi/
>________________________________________________________________________
>
>

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