Sure, just not thinking as clearly as I should be (so what's new, after
all I'm officially old now, what with medicare card and all).    thanks,
David

On Wed, Jan 20, 2010 at 7:09 PM, Jim Arnott wrote:

> The big hole where the ice chest and lawn chairs go upsets the
> airflow.  Roger's California had the cowling the eliminated that hole
> and it was noticeably cleaner. The luggage rack causes the boundary
> layer to separate immediately behind it and become turbulent.  That
> increases drag.
>
> http://www.thesamba.com/vw/forum/viewtopic.php?t=316411&highlight=drag
>
> Jim
>
> On Jan 20, 2010, at 10:31 AM, Dave Mcneely wrote:
>
>> Granted that common sense fails often on many fronts.  But I'd like
>> to
>> know, if indeed it is the case, how the vehicle with a pop top but no
>> luggage rack would be more aerodynamic than the more typical  camper.
>> If
>> the airflow is smoother over that top, I'd be surprised.  But I've
>> been
>> surprised before.  In this case, I'd just like an explanation, so I'd
>> understand better.  David