My guess is that the electric draw of the fan makes the temp gauge needle move
down much like how the lights dim when you turn on that 2,000 Megawatt stereo
system.
-----Original Message-----
From: owner-mgs@autox.team.net On Behalf Of Rich Mason
Sent: Friday, July 18, 1997 1:09 PM
To: mgs@autox.team.net
Subject: Re: Electric Cooling Fans
At 11:53 AM 7/18/97 -0500, you wrote:
>I replaced the engine-driven cooling fan on the 'B with an electric
>version. There is only about 2" of room behind the radiator, so I had
>to mount the fan in front (pushing air through the radiator).
>
>I would have thought that @ 70 mph, there would be enough air moving
>across the radiator to keep the engine cool. If the fan is off, the
>temp guage rides halfway between 'N'ormal and 'H'ot. With the fan on,
>it rides right at 'N'ormal.
>
>Anyone want to guess why?
****tongue in cheek mode ON******
Thomas-
As stated in a thread earlier this year - it has something to do with the
velocity being too high to actually transfer the heat from the radiator -
much like the alternate problem with running without a thermostat allows too
much water flow through the radiator.
****tongue in cheek mode OFF******
Possibly the non-moving fan is obstructing airflow across the radiator???
Regards,
Rich Mason
'73 MGB
Huntsville, AL
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