<VV> Electric cooling fan results

[JVHRoberts at aol.com]

The stock fan is horrible and inefficient. However, perhaps a 911 fan?  
Efficient, and since there's an electric motor, its CW rotation doesn't matter.  
Still, it's reasonable to assume it'll take a BUNCH of HP to spin any reasonable 
 fan. 
And it's probably simpler, etc., to come up with a  better fan in the  stock 
location with the stock drive. HEck, it's hard to do worse!
 
In a message dated 7/29/2007 3:33:39 P.M. Eastern Daylight Time,  
mfrancis at wi.rr.com writes:

The main  reason we are all interested in an electric cooling fan is that
it be  electric, for the obvious benefit of low drag on the engine at top
speed.  Also, the benefit of achieving aftercooling between runs at an
autocross,  etc.

Since the fan tested was a bladed fan, which has now shown to be  unable
to effectively pressurize a Corvair engine cooling system, how  about
retaining the stock impeller fan and mounting an electric fan motor  to
the top of the existing fan pulley?

I've found a fan motor  online, made as a factory replacement for the
current GM V8 line. This  motor could be mounted on a tripod bracket
above the fan pulley, with a  suitable drive connection between.

It would appear that this setup  might have the benefits of electric
cooling, with none of the low-pressure  drawbacks of a bladed fan. You
wouldn't have to modify anything below your  upper shroud either.

Since the testing group already has the test  vehicles still in hand,
perhaps this mod could be readily done and a second  test performed,
maybe with better results.

Does this look like a  reasonable alternative to the testers?







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