not true! a fan in front of a radiator is blocking potential air from
passing through the core, and in the center where the motor is located
causes a "hot spot". if the exact same fan is located behind the core no
space on core is obstructed and entire core is exposed to incoming air.
now this is with a fan running. with a fan at rest (even if blades are wind
milling at speed) the fan motor and blades are impeding incoming air's
acess to the entire core all at one time , there is a blockage at rest equal
to total square inches of all blades and motor housing added together. if
you add the total blockage on an at rest electric fan assy. in a spridget
rad. i estimate it is equal to near 50% restriction of potential air flow.
with the fan rear mounted, the air has already passed through the core(doing
it's job exchanging heat) and is meerly redirecting itself at the rear side,
unrestricted.
chuck.
i guess a degree in automotive technology was a waste of time?
----- Original Message -----
From <Daniel1312 at aol.com>
To: <macy@bblmail.psycha.upenn.edu>; <RBHouston@aol.com>;
<grbyrns@ucdavis.edu>; <spridgets@autox.team.net>
Sent: Tuesday, July 25, 2000 5:31 PM
Subject: Re: bypass tube on head
> A fan is the same size whether it is in front of the rad or behind the rad
> the only thing that can vary is the proximity of the fan to the rad.
>
> Daniel1312
>
> In a message dated 25/07/00 03:27:18 GMT Daylight Time,
> macy@bblmail.psycha.upenn.edu writes:
>
> << Put something in front of the fan, it blocks air flow. >>
>
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