<VV> Fans and air flow

[ScottyGrover at aol.com]

In a message dated 8/1/2007 4:06:25 P.M. Pacific Daylight Time, BobHelt  
writes:

 
In a message dated 8/1/2007 1:23:43 PM US Mountain Standard Time,  
ScottyGrover at aol.com writes:

Also,  as several people have stated, the fins should be cleaned up to   
minimise the obstruction to air flow; this probably lowers the HP  
requirements  of a 
stock fan also.


No, sorry, Scotty!
 
Deflashing and minimizing the obstruction to air flow RAISES the  horsepower 
the fan requires. Look at the hp/flow data in the SAE 140C report  for details.
Regards,
Bob Helt





That doesn't seem right.  In an air conditioning system one keeps the  duct 
cross-section large to hold down the air drag; requires less HP at the fan.  
Why doesn't it work that way on a 'Vair? You may be quite right but I'm  
scratching my head wondering why.  



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