12 v dc dynamo

[tasker tractor]

VW aircooled beetle you can get 6v or 12v dynamo's the shaft is long enough to put a pulley on either end. they do need a voltage regulator though.
Mike

[sparky1962]

Thanks for that the dynamo from a vw beetle seems the way to go as you say just run it through a voltage regulator
Can you tell me is that how the full size things work?
Never really thought too much about it until now

[Gaudin98]

You don't need a voltage regulator with a conventional car dynamo. Just place a wire wound variable resistance in series with the field connection and adjust as necessary {as you would on a full size dynamo}.

[weidner]

Originally Posted by Gaudin98

You don't need a voltage regulator with a conventional car dynamo. Just place a wire wound variable resistance in series with the field connection and adjust as necessary {as you would on a full size dynamo}.

Yes , but the car type regulator does that automatically .

[steamy1]

Originally Posted by weidner

Yes , but the car type regulator does that automatically .

The original regulator if it is available would be the easiest solution, a variable resistor the cheapest, but one of these controlling the Field would be a modern efficient solution.