<VV> Electric fans

[Ron]

Wow, you say things well!
RonH

----- Original Message ----- 
From: "John Kepler" <jekepler at amplex.net>
To: "'Smitty Smith'" <vairologist at verizon.net>; <virtualvairs at corvair.org>
Sent: Tuesday, July 31, 2007 4:35 PM
Subject: RE: <VV> Electric fans


> Sometimes they work real well and sometimes not so well.
>
> Which is why engineers exist!  Engineering replaces the "maybe...maybe
> not...coulda-sorta" of the "tinkerer", and arrives at scientifically-valid
> evaluations of an idea without the likely useless "futzing" of the
> non-engineer.  When an idea DOES prove to be technically valid, you then
> move to a carefully and mathematically calculated testing design that will
> not only prove the validity of the "idea", but optimize it to arrive at 
> the
> most "elegant" solution the "idea" and the application criteria will allow
>
>
> The point is, I got off my keester and tried them.
>
> Funny....I got out my calculator and then ran a couple of flow simulations
> on my computer....and went back to watching the ball game.  "Practically
> impossible" is the operative phrase within the articulated design
> conditions, the numbers proved it....and NO tinkering was required to
> unequivocally confirm it....the numbers alone were sufficiently 
> conclusive.
>
> That's a hell of a lot more than you vociferous yammer jaws have
> accomplished in the last week.
>
> Oh I don't know...what exactly was "accomplished" by his gymkhana?  That
> certain folks have too much free time on their hands that they should
> probably better spend taking a couple of basic engineering courses than
> building "cooling fans" that simply can't work as presented?   I fail to 
> see
> where ANYTHING was accomplished by spending large amounts of money and 
> large
> amounts of time building something didn't work, when 15 minutes with a
> graphing calculator and some very basic engineering knowledge would have
> proven that it was a "Dead Horse" from the git-go!
>
> Not trying to sound harsh...but you are the one that got bilious first, 
> and
> this whole deal is something that a third-year Undergrad engineering 
> student
> could blow sky-high without breaking a sweat!
>
> BTW, this is NOT to say that the stock fan is the "end-all/be-all"....I
> don't believe it is (the idea of adding "ram-air" via NACA openings behind
> the door might be a winner), or that it, coupled with some permutation of
> variable-speed fan might improve cooling while lowering the parasitic 
> loads
> on the engine!  However, to accomplish that goal is going to require
> breaking the current paradigm, and re-engineer the entire cooling system 
> on
> a fairly fundamental level.  It isn't going to be some "bag" you are going
> to be able to hang on the existing design that will magically cool the
> engine at even it's highest sustainable power output...all while reducing
> the parasitic loads to some ridiculously low-level.  People in hell want
> ice-water too....but no amount of wishful thinking or "tinkering" is going
> to make that happen....some solid engineering might.
>
> John
>
>
>
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