<VV> 90 degree cooling fans

[ScottyGrover at aol.com]

Not only the Franklin--also the Czech TATRA--which was used, not only in  
cars but also in trucks and self-propelled railway cars.  This is per  Julius 
Mackerle's book "The Air-Cooled Automobile Engine," which is supposed o  be 
the authoritative word on air-cooled engine design, as of 1972; the book  
mentions the Corvair engine as one oft he types that he studied.
 
The way he described the process, sucking air over the fins was the best  
way to get even cooling.
 
I've been trying to figure a way to design a pair of fans and sheetmetal to 
 get that effect on a Corvair.
 
Scotty from Hollyweird
 
.
 
 
In a message dated 7/15/2012 7:36:45 A.M. Pacific Daylight Time,  
LonzoVair at aol.com writes:

Harry,
Sounds like the way the Franklin was cooled, a large fan  on the end of the 
 
crankshaft. The early Franklin engineers found you  can get a better 
(larger-  more uniform) cooling done by "sucking"  the air past something. 
If you 
"blow"  the air through what you want  cooled it will only cool what the 
fan is 
pointed  at. They figured a  fan sucking air over something may cool more 
with less... at  least  according to an old book I have from 1920, 
"Everyman's 
Guide To  Automobile  Care & Maintenence"...
Keep in mind they were dealing  with inline six  engines (and later an 
almost 400 cubic inch  V12).
Later,
Lonzo


In a message dated 7/14/2012 2:05:23 P.M.  Eastern Daylight Time,  
hyarnell1 at earthlink.net  writes:

I  remember the cooling fan (squirrel cage)
on my '72  VW bus was on the end of  the crankshaft. Very  clever.


-----Original Message-----
From:   virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org]   On Behalf Of Ron
Sent: Saturday, July 14, 2012 1:19 PM
To:   virtualvairs at corvair.org; Tony Underwood
Subject: Re: <VV> 90  degree  cooling fans

How is the blower driven on that   engine?
RonH

----- Original Message ----- 
From: "Tony  Underwood"  <tony.underwood at cox.net>
To:   <virtualvairs at corvair.org>
Sent: Saturday, July 14, 2012 9:22   AM
Subject: <VV> 90 degree cooling fans


>
>  Back  to cooling fans again?
> Check out the fan on this 917  Porsche, being  started for the first
> time in decades.
>  _http://www.youtube.com/watch?v=tU0r99fyD0U&feature=related_  
(http://www.youtube.com/watch?v=tU0r99fyD0U&feature=related)  
>  tony..
>
> PS:   There is one of these  rocketships in  the UK that is TAGGED and
> STREET   DRIVEN.


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