In article
,
Tim+ wrote:
Don't remember ever having a viscous - went from belt driven to electric!


It‘s not obvious. It‘s still belt driven but has some sort of fluid filled
clutch in the hub of the fan.

And temperature sensitive. It merely idles round until actually needed. So
wastes little if any power - assuming the water pump is still belt driven.

In the days of a directly driven fan, an electric thermostatically
controlled one would obviously save power.

--
*If tennis elbow is painful, imagine suffering with tennis balls *

Dave Plowman London SW
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