<VV> Cooling

[Ron]

Yes, electric fans have been tried but never by anyone who knows what they 
are doing.  Since it's getting reasonably close to April 1st, I can describe 
how the previous designs have been inadequate.

First, none of them ever looked at Bob Helt's book, The Classic Corvair, to 
see how much power is required to blow enough air to cool the engine.  Turns 
out that it's at least ten horsepower as shown on page 42.  So the easy and 
realistic solution is to couple a ten or more horsepower DC electric motor 
directly to the blower hub.  You might as well use the existing blower as 
the power requirement comes from the design if the engine, not the blower. 
A little hammer work on the engine lid will provide clearance for the motor.

Second, an electric motor of that size will require something like 150 amps 
and since that's way beyond the limits of the Corvair system, you should 
install something like a Tesla car battery pack somewhere in the Corvair. 
This will require you to stop at Tesla charging stations (To be built) to 
recharge ever so often.

Third, you'll need a computer controlled speed control for the blower motor 
with the engine temperature being the controlling criteria.  This could be 
mounted where the spare tire used to be.

There you have it, just an afternoons work with an unlimited budget.  Do you 
need to run it all the time? (The second question) The answer is no as long 
as you don't mind installing a fresh uncooked engine ever so often.

April is coming,
RonH
PS - it's a blower, not a fan!

----- Original Message ----- 
From: "Jon Woolf" <jon at jonwoolf.com>
To: <virtualvairs at corvair.org>
Sent: Monday, March 11, 2013 4:24 PM
Subject: <VV> Cooling


> Has anyone tried an electric fan instead of mechanical drive?  That
> thing must suck up a lot of HP.  And does it need to run all the time?
> A thermostat controlled electric might give a boost in power.
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