<VV> alternate fans

[Ron]

That Corvair Speciality electric setup looks very interesting but who wants 
a full fan speed at low speeds in town?  Apparently it's either on or off. 
Also, I'd like to see the 2500 cfm demonstrated on a stock engine as I have 
difficulty believing that that little motor can do it as it must require 
something like 25 hp at that flow rate.
RonH
----- Original Message ----- 
From: <ScottyGrover at aol.com>
To: <jaysplace at laserpubs.com>
Cc: <virtualvairs at corvair.org>
Sent: Sunday, March 17, 2013 10:10 AM
Subject: Re: <VV> alternate fans


> No pipe dream--the circuitry for controlling a small electric motor exists
> and is rather simple; rigging it to use a CHT measuring device might be
> more  difficult but a powerful motor is in service--ask Mel Francis about 
> this.
> Also, Corvair Specialties has for sale an electric-motor-driven setup 
> which
> could be installed and the motor controlled from the CHT.
>
>
> Scotty from Hollyweird
>
> .
>
>
> In a message dated 3/17/2013 12:58:11 A.M. Pacific Daylight Time,
> jaysplace at laserpubs.com writes:
>
> as  always, there are multiple factors to consider:
> - how much pressure  differential can the proposed fan(s) develop at the
> required airflow?
> -  a fan might work better pulling than pushing because the turbulence
> created by the fan doesn't have to straighten out to go through  fins.
> (electric fans on water pumpers work better pulling than pushing, I'm 
> told)
>
> i expect that most 'fans' develop almost zero pressure  differential. I
> imagine they would help a bit more than that.
>
> If  you could take a Corvair (or other) blower that would supply more
> than  enough volume and pressure, then drive it with a variable ratio
> system  (like snowmobile?) and control ratio by head temp?
> Then you'd never waste  power by pumping more air than needed, and always
> have enough  cooling.
>
> Oh, well - pipe dreams, my specialty!
>
> --
> Jay
>
>
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