<VV> CHT Re: valve seats and "Ping"

[ScottyGrover at aol.com]

Overdrive is 1.58:1; I would turn the fan with the stock drive, bolt the  
fan ring to the turkey roaster, and find out just how much better the cooling 
 was improved.  If things went OK, I would consider the sped reducer from  
Clark's to lower the RPM so as to reduce the HP requirements.
 
Scotty from Hollyweird
 
.
 
 
In a message dated 5/18/2012 4:44:09 A.M. Pacific Daylight Time,  
kenpepke at juno.com writes:

Very  interesting concept and it sure has a lot of blades.  A stock Corvair 
fan  has an overdrive but I don't know the ratio.  At what RPM would you 
plan  on turning this fan?  

Ken P
Wyandotte, MI
Worry looks  around; Sorry looks back, Faith looks  up.

******************************

On May 17, 2012, at 10:37 AM,  ScottyGrover at aol.com wrote:
> 
> ----- Original Message -----  
> From:  <ScottyGrover at aol.com>
> To:  <virtualvairs at corvair.org>
> Sent:  Wednesday, May 16, 2012  4:49 PM
> Subject: Re: <VV> CHT Re: valve seats  and  "Ping"
> 
> 
>> I have designed a series of fans for the  purpose of  improving the air 
flow
>> through a Corvair's  engine. the problem with  any of the factory stock 
>>  units
>> is  that there is too  much space between the fan  and the upper shroud
>> (turkey  roaster)  which allows air  to go back by the fan (the 
technical 
>> term
>>  is"reversion.")  my latest fan design involves a fan with blades  which 
 
>> rise  up
>> into the airstream and a  "fan ring" which  fastens to the turkey 
roaster 
>>  and
>> which minimises the gap  between the fan and  fixed-position parts.  This
>> allows less air  to revert  over the fan blades, keeps the air and the
>> pressure going   through between the fins where it belongs.
>> 
>> Scotty  from  Hollyweird
>> 
> 
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