List,
Efficiency has a lot to do with new cars having electric fans. Crank
driven fans (whether they are direct mounted or with a viscous clutch)
require a lot of energy to turn at speed when you're travelling down the
road, and really don't need the fan to move air across the radiator.
When you're stuck in traffic and all you have to move air is the fan, it
is not working at top efficiency. That is why an electric fan makes
perfect sense. It is on when you need it and off when you don't!
Regards,
Chad Jester
Bwfox wrote:
>
> Fellow Listers:
> I have been following the thread re electric vs directly driven fans on our
> beloved
> Triumphs. Someone made the observation that electric fans must be more
> efficient as all new cars use them. I do not believe efficiency has anything
> to do
> with newer vehicles using electric fans as much as the fact that almost all
> newer vehicles have transversely mounted engines.
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