<VV> Fan dreams

[ScottyGrover at aol.com]

In a message dated 5/22/2008 9:04:52 A.M. Pacific Daylight Time,  
airvair at earthlink.net writes:

Didn't  say the stock fan isn't adequate. Just that a fan setup like the
Astro cam  engine seems like a more logical way to go.

-Mark


>  [Original Message]
> From: <PatioMatt at aol.com>
> Subject:  Re: <VV> Fan dreams
>
> Funny.....
>  
>  Smitty Smith tows a trailer with a Lakewood thru 110 F  heat over  the  
> Rockies and survives...
>  
> Warren  LeVeque  uses the "basic" Vair fan to cool his  Turbo'd   racer  
in 
> long roadcourse events...
>  
> I  could go on and on about others....
>  
> WHAT is the  REAL  problem???  
>
> Matt   Nall



Maybe Warren and Smitty know something some of the other racers don't  know.  
Some of us (racers or not) are trying to design a replacement fan  that is 
more than "adequate" for cooling and doesn't require as much power--the  stocker 
(whether '63 steel or LM magnesium) maxes out as to CFM pumped before  4000 
RPM, but the HP required to drive it climbs as the cube of the RPM. The  radial 
design of these Mg fans is about as inefficient as you can get. It must  have 
been designed for cheapness, as the earlier sheet steel fan had too much  
inertia for higher RPM, especially fast changes in RPM; the Mg fan was much  
lighter and could handle the conditions "adequately" but probably would have  cost 
too much to duplicate the earlier design in Mg, so was done "on the  cheap."
 
Scotty from Hollyweirdf



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