On 17/05/18 01:54, Bill Wright wrote:
On 16/05/2018 15:49, Graeme wrote:
In message ,
writes
We had a Morris 1000 in the 1960s.Â* I remember that the dynamo was
not quite able to charge the battery if all the electrical loads were
on (heater fan, lights, and windscreen wipers).
The dynamo should be able to cope, if in good condition.
It's a close call if you add it all up. There's the ignition and
occasional brake lights and indicators remember. I reckon you could
touch 22A at times.
Even in good nick dynamos of that ear could only just keep up with the
loads..my car fixing period started in the very late 1960s and by then
everyone was retrofitting alternators.
It was the availability of rugged silicon diodes and transistors that
made alternators viable, and signalled the end of the 'control box'
I don't actually understand why alternators were capable of supplying
more current though.
But IIRC they ususally ran a bit faster on smaller puleys so they worked
better at e.g. idle
Bill
--
How fortunate for governments that the people they administer don't think.
Adolf Hitler