02-12-2023, 04:27 PM
You don't need a regulator. All the regulator does is it allows different levels of feed to the Field Windings. With a couple of switches and a couple of different bulbs you can easily feed 4 levels of power to the field.
With both switches off............. no current in the field so no charging.
One switch on................small current to field, so charging maybe a couple of amps.
Other switch on (only).....bigger current to field, so charging maybe 4 to 6 amps.
Both switches on............. a bigger current to the field so more charging maybe 8amps.
It's simple, doesn't fail, and it suits me. Instead of two bulbs I use a twin filament 12v stop/tail bulb.
I'm using the original Lucas dynamo but fitted with higher resistance field windings.
And I don't use a cut-out. Simply use a couple of diodes out of a 1980's Lucas alternator.
With both switches off............. no current in the field so no charging.
One switch on................small current to field, so charging maybe a couple of amps.
Other switch on (only).....bigger current to field, so charging maybe 4 to 6 amps.
Both switches on............. a bigger current to the field so more charging maybe 8amps.
It's simple, doesn't fail, and it suits me. Instead of two bulbs I use a twin filament 12v stop/tail bulb.
I'm using the original Lucas dynamo but fitted with higher resistance field windings.
And I don't use a cut-out. Simply use a couple of diodes out of a 1980's Lucas alternator.