Re: sunroofs and booming

[MSV96@aol.com]

In a message dated 5/27/98 <Robert.Houk@East.Sun.COM> writes:

<Long but very informative post snipped>

<< Blah humbug! I hope they fix this before foisting the S4 on us! >>

Don't count on it. As I think I posted once before, that was a *huge* peave of
mine with my then new (now long gone) '88 80q. I think it may have to do as
much with the resonant frequency of the body shell as the proximity and
location of the airflow over the front of the sunroof. (Like where you put
your lips on a flute makes a difference.) I have never expereinced it in an
(equaly low cd) type 44 chassis car, sedan or wagon...though I gather perhaps
other listers have. (I am far from an aerodynamic expert...care to step in
Gross?) On my 80q one could reduce this simply by applying pressure against
the flap at the front of the sunroof opening. I showed this to an Audi zone
rep...to no avail. Granted it is very annoying IMO and I would think that this
would have been "fixed" sometime in the evolution from 80/90 to A4 body
shapes.

Mike Veglia
87 5kcstq (sunroof closed with 14 days straight of rain in "sunny" Santa Cruz,
CA.)