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"
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>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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