<VV> Talk about fans

[Harry Yarnell]

Most GM stuff have 'puller' and 'pusher' fans; one on either side of the
condenser/radiator combo. They are different size, with the 'puller' being
the biggest.
They can be configured many ways; the puller(engine-side fan) usually comes
on first, controlled by the ECM. Then either the two are put in series,
electrically, or parrellel, depending on the car and/or heat load.

Harry Yarnell
perryman garage and orphanage
perryman, MD
hyarnell1 at earthlink.net

----- Original Message ----- 
From: "N. Joseph Potts" <pottsf at msn.com>
To: "Padgett" <pp2 at 6007.us>; <virtualvairs at corvair.org>
Sent: Monday, June 27, 2005 3:22 PM
Subject: RE: <VV> Talk about fans


> I'm rigging fans on the condenser of a 66 A/C system (Corvair). Do
> Bonneville fans run "in series" pneumatically or electrically? Are the
fans
> identical or different from each other? The fans turn off above a certain
> ambient airflow? How is this accomplished? I think I'd like mine to do
that,
> too.
>
> Joe Potts
> Miami, Florida USA
> 1966 Corsa coupe 140hp 4-speed with A./C
>
> -----Original Message-----
> From: virtualvairs-bounces at corvair.org
> [mailto:virtualvairs-bounces at corvair.org]On Behalf Of Padgett
> Sent: Sunday, June 26, 2005 4:23 PM
> To: virtualvairs at corvair.org
> Subject: <VV> Talk about fans
>
>
>
> > >> car" must first duplicate (or better) the air handling capacity of
the
> > >> stock
> > >> system, THEN do it at much less mechanical hp (because electric fans
> have
> > >> another energy conversion loss the mechanical fans don't).
>
> I would probably do it the same way as on our Bonneville: Two fans around
> 900 CFM that run in series for a low demand speed and in parallel for high
> flow. Of course the Bonne is also engineered so that natural air flow
takes
> over above 50 mph so they are off then.
>
> One of the first things I plan to look at once I find the right car (have
> cash, will travel 8*) is to utilize that natural air flow which is blocked
> in the production car.
>
> Padgett
>
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