[fastvair] Re: <VV> electric fan idea

[ScottyGrover at aol.com]

In a message dated 8/7/2007 5:53:16 P.M. Pacific Daylight Time,  
scottygrover at aol.com writes:

 
 
 

In a message dated 8/7/2007 3:57:27 P.M. Pacific Daylight Time, 
_JVHRoberts at aol.JVH_ (mailto:JVHRoberts at aol.com)   writes:

Yeah, when I get that 500 amp alternator and the 50 pound  electric motor 
with enough HP to spin it. <G>

Horsepower is  proportional to torque times RPM. HP is a BIG number here 
relative to the  available electrical power in an automotive electrical 
system. 

In  a message dated 8/7/2007 9:17:04 A.M. Eastern Daylight Time, 
_reray at echoes.rer_ (mailto:reray at echoes.net)  writes:

Has  anyone ever considered just driving the factory magnesium corvair fan 
with  an electic motor? The easiest solution I would think would be to belt  
drive the stock fan with an electric motor that puts out enough power...  
electric motors are generally not short on torque so I wouldnt think this  
would be 
too hard to  accomplish..too ha

comments?

Ray Rodriguez III
CORSA  member
65' Corsa 140/4 coupe undergoing  restification






Seeing as how the stock fan pulleys drive the fan at 1.58 times crank speed  
and HP required to drive a fan varies as the cube of the RPM, an electric 
motor  driving the stock magnesium fan at a constant speed (enough to produce  
sufficient CFM but not so much that HP requirements go sky-high) might be a good  
thing (the fan tested by Ken and Frank was a prop. job with little ability to 
 move air against any meaningful air resistance((static pressure,))) 
But still, the HP required to drive it might be too high for an electric  
motor of reasonable size.
 
Scotty from Hollyweird



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