Actually the 4/4s and Plus 4 drophead coupes do not have louvers.
Gerry
> -----Original Message-----
> From: Vandergraaf, Chuck [SMTP:vandergraaft@aecl.ca]
> Sent: Thursday, June 01, 2000 10:38 AM
> To: 'David McCoy'
> Cc: morgans@autox.team.net
> Subject: RE: Louvers in the Bonnet
>
> Dave,
>
> Wait no longer; see my e-mail dated yesterday, copied below:
>
> Len,
>
> Not just the +8, but also the 4/4 and the +4 (but, apparently not the new
> Aero 8) have louvres. I'm not an engineer (aerospace or otherwise) but I
> suspect that, when the car is in forward motion, the louvres force the air
> rushing over the bonnet away from the bonnet and create a partial vacuum
> to
> help suck the air out. The only other way for air to escape is through
> the
> bottom of the engine compartment. I agree, the louvres look cool but are
> hard on the finger tips when polishing the car. But, "no pain, no gain."
>
> Chuck Vandergraaf
> Pinawa, MB
> '52 +4 (complete with louvres)
>
>
> Chuck (radiochemistry; not physics)
> ----------
> From: David McCoy[SMTP:gdm_1419@yahoo.com]
> Sent: Thursday June 01, 2000 11:57 AM
> To: morgans@autox.team.net
> Subject: Re: Louvers in the Bonnet
>
>
> --- "Michael D. Miles, PE" <mdmiles@mdmpe.com> wrote:
> > Not exactly. The theory is that a certain amount of
> > air enters the
> > GRILL but its 'path of least resistance' is actually
> > downward through
> > the opening to the ground between the grill and
> > radiator. This
> > reduces the amount of air rammed through the
> > radiator signifigantly
> > and therefor allows backflow (recirculation) from
> > the engine
> > compartment to percolate forward through some of the
> > radiator, thereby
> > reducing its efficiency in removing heat.
>
>
>
> Waiting patiently for "bernouli" to surface...IR
> airflow over and across louvers pulling air from
> engine area... OR perhaps louver as "wing" ....
>
> Dave (C in physics) McCoy
>
>
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