<VV> How about the cooling fans from these engines?

jvhroberts at aol.com jvhroberts at aol.com
Tue Jul 30 01:18:23 EDT 2013

 It absolutely is a fan problem! At 20% efficiency at top speed, that's VERY dismal. And given we can boost fan performance a LOT just by having a different fan far more easily than adding more fins, etc., well, there ya go!


John Roberts


-----Original Message-----
From: BobHelt <BobHelt at aol.com>
To: jvhroberts <jvhroberts at aol.com>; mfrancis <mfrancis at wi.rr.com>
Cc: virtualvairs <virtualvairs at corvair.org>
Sent: Mon, Jul 29, 2013 11:44 pm
Subject: Re: <VV> How about the cooling fans from these engines?

Oh come on now!!  That isn't a fan problem. That's a problem with the heads and cooling surfaces. A fan capable of developing greater cfm and/or greater pressure just isn't going to force that much more air thru the heads and/or rest of the engine.
Bob Helt

In a message dated 7/29/2013 6:06:07 P.M. US Mountain Standard Time, jvhroberts at aol.com writes:
Also, we   know the Corvair fan is horribly inefficient, and for high perf apps, it just   isn't enough. Ask a turbo owner or anyone who really races these things, and   they'll all tell you, the stocker just isn't up to the job. 

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