I don't know if it will clear the bonnet or not in a bugeye, but the
radiator shroud from a 1500 Midget in concert with a cross flow radiator
provides about 1" additional clearance between the radiator and the fan
pulley. With this combination I have utilized an electric fan behind the
radiator without fouling the water pump pulley. Locate the fan slightly off
center, and grind the waterpump pulley bolts for additional clearance, or
utilize counter sink cross head screws.
David Riker
74 Midget
63 Falcon
70 Torino
http://personalweb.sunset.net/~davidr
----- Original Message -----
From "Bryan Vandiver" <Bryan.Vandiver at Eng.Sun.COM>
To: <Daniel1312@aol.com>; <spridgets@autox.team.net>;
<cfchrist@earthlink.net>
Sent: Tuesday, July 25, 2000 1:42 PM
Subject: Re: bypass tube on head
> That theory is all well and good, but unfortunately, there is not as much
room
> behind the radiator to mount a fan with the shroud, and steering rack in
the
> way, so a rear mounted fan would need to be much smaller than a front
mounted
> fan (at least on my bugeye). If this is the case, the CFM of the rear
mounted
> fan would be much less than a front mounted one, and it may end up being a
push
> either way as to which would cool better.
>
> - Bryan
>
> >To: <Daniel1312@aol.com>, <spridgets@autox.team.net>
> >Subject: Re: bypass tube on head
> >MIME-Version: 1.0 charset="iso-8859-1"
> >X-Priority: 3
> >X-MSMail-Priority: Normal
> >X-MIMEOLE: Produced By Microsoft MimeOLE V5.00.2314.1300
> >
> >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@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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