When I bought mine in 1972 it had a Kenlowe electric fan, and being made in the pre-alternator period had a dynamo. This was a fatal combination in traffic. I was in central London in the dark during the miners'/power workers strike when all power was off, including lighting and traffic signals. I juggled heater blower, aka supplementary engine cooling, and headlights to prevent boilover, but the battery died as I headed out of London. The folk in the stationary traffic coming the other way gave me a push and I got home. Later it occurred to me that the extended nose of the Bond bonnet moved the cold air source away from fan and radiator so that the fan just circulated hot air if the car wasn't moving. Some ducting might have improved things. Cars that just work are so dull ...
Thanks for the comments. I'm afraid you will have to go to Northern Ireland if you want to see the car at the moment. Yes, I did consider a waterless coolant but ruled it out on the grounds of cost and value for money.
