Redundant carb cooling fan idea

That’s really interesting Andy!
I thought my idea might be pants!
I still have the wiring connector for the cooling fan attached to the spade connectors on what I guess is the temperature sensor on the carb.
I’m not sure if it ever triggers the fan anymore so suggested the manual switch.
Does yours just trigger when hot as standard?
Gaz

Yes, my fan works as standard, so when the engine is turned off after a run the fan cuts in when the temperature rises.
It keeps cutting in an out until then temperature has been brought down.
For my earlier car, the fan switch was wired into the circuit. So that the fan still worked off the thermostat as standard, but you could switch the fan on when sitting in traffic.
The only thing to remember is that you need to switch it off otherwise it will drain your battery if you forget!
However, if you have gone for electronic ignition, then you can do away with the fan circuit. If you are sitting in traffic and the temperature rises then the radiator fan should kick in. I find just increasing the revs slightly increases the flow of coolant around the circuit and brings the temp down anyway.

My car still has a carburettor cooling fan which operates automatically as Fiat designed.
It also has an override switch which can turn the fan on at any time the driver decides things may be geting too hot in the engine bay. It's mounted on custom made panel which also holds the non-standard manual choke control located between the seats on the engine bay bulkhead.
I have an electric fuel pump which lessens to problem of hot starts because of fuel vaporistion, the fan does make a good mounting point for the pump though.

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