Jerry,
How did you verify all of this info?
What I'm saying is, I have an electric fan on my '78 Midget, and it
"seems" to work ok. It has an adjustable mechanical sensor that feeds
down into the top hose of the radiator. When the weather became extremely
hot in Florida, I increased the setting of the fans' "cut-in" time.
The fan runs at high rpm when the car is idling, which it could not do
with its original mechanical system.
The shop I had my radiator re-cored at also told me that there are two
different types of fans; ones that push, and ones that pull. They told me
not to buy one of those fans available at Autozone, Western or Checker to
push air, even though the instructions on the box says the fans can
handle both situations.
>From this info. I installed a 10" diameter fan that pushed, using my
electrical engineering experience to know that the fan will last much
longer if it doesn't have excessive hot air passing over it.
Anyone else out there have any input, because I must admit that I've
often wondered how efficient the electric fans are, and I'm contemplating
converting my '75 Spitfire.
Nick D. Benson
Dept. of Industrial Sciences
Colorado State University
Fort Collins CO
> I tried that on my '67 B, but it didn't work very well, so I reverted
> to the belt driven one (although I did move up to one of the yellow
> plastic variety from a later 'B). When I had my radiator recored, the
> shop installed a fitting for a sensor to control my new electric fan .
> I fabricated a bracket (too much vibration to attach directly to the
> radiator) and installed a 10" Bosch fan that was intended as an
> auxiliary unit for a Mercedes Benz with air conditioning.
> It never did cool properly. At low speed it didn't seem to push
> sufficient air, and at high speed it blocked the flow of ram air coming in
> through the grill. My temperature gauge always indicated 190F or
> higher, until I removed the Bosch fan. Now it never runs over 180F.
> A better alternative would be a "flex fan," with blades which flatten
> at higher RPM, but no one seems to make one with a center hole large
> enough to fit my water pump shaft.
>
> Jerry Causey
> antiques@whidbey.com
> Jerry Causey
> antiques@whidbey.com
>
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